diff --git a/sonoff/i18n.h b/sonoff/i18n.h
index 60b5880e0..58e1ba63d 100644
--- a/sonoff/i18n.h
+++ b/sonoff/i18n.h
@@ -69,6 +69,7 @@
 #define D_JSON_FLASHCHIPID "FlashChipId"
 #define D_JSON_FLASHMODE "FlashMode"
 #define D_JSON_FLASHSIZE "FlashSize"
+#define D_JSON_FLOWRATE "FlowRate"
 #define D_JSON_FREEMEMORY "Free"
 #define D_JSON_FREQUENCY "Frequency"
 #define D_JSON_FROM "from"
@@ -143,6 +144,7 @@
 #define D_JSON_TIME "Time"
 #define D_JSON_TODAY "Today"
 #define D_JSON_TOTAL "Total"
+#define D_JSON_TOTAL_USAGE "TotalUsage"
 #define D_JSON_TOTAL_REACTIVE "TotalReactivePower"
 #define D_JSON_TOTAL_START_TIME "TotalStartTime"
 #define D_JSON_TVOC "TVOC"
@@ -515,6 +517,8 @@ const char S_JSON_DRIVER_INDEX_SVALUE[] PROGMEM =             "{\"" D_CMND_DRIVE
 const char JSON_SNS_TEMP[] PROGMEM = ",\"%s\":{\"" D_JSON_TEMPERATURE "\":%s}";
 const char JSON_SNS_TEMPHUM[] PROGMEM = ",\"%s\":{\"" D_JSON_TEMPERATURE "\":%s,\"" D_JSON_HUMIDITY "\":%s}";
 
+const char JSON_SNS_GNGPM[] PROGMEM = ",\"%s\":{\"" D_JSON_TOTAL_USAGE "\":%s,\"" D_JSON_FLOWRATE "\":%s}";
+
 const char S_LOG_I2C_FOUND_AT[] PROGMEM = D_LOG_I2C "%s " D_FOUND_AT " 0x%x";
 
 const char S_LOG_HTTP[] PROGMEM = D_LOG_HTTP;
@@ -569,6 +573,8 @@ const char HTTP_SNS_ANALOG[] PROGMEM = "{s}%s " D_ANALOG_INPUT "%d{m}%d{e}";
 const char HTTP_SNS_ILLUMINANCE[] PROGMEM = "{s}%s " D_ILLUMINANCE "{m}%d " D_UNIT_LUX "{e}";     // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
 const char HTTP_SNS_CO2[] PROGMEM = "{s}%s " D_CO2 "{m}%d " D_UNIT_PARTS_PER_MILLION "{e}";       // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
 const char HTTP_SNS_CO2EAVG[] PROGMEM = "{s}%s " D_ECO2 "{m}%d " D_UNIT_PARTS_PER_MILLION "{e}";  // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
+const char HTTP_SNS_GALLONS[] PROGMEM = "{s}%s " D_TOTAL_USAGE "{m}%s " D_UNIT_GALLONS " {e}";    // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
+const char HTTP_SNS_GPM[] PROGMEM = "{s}%s " D_FLOW_RATE "{m}%s " D_UNIT_GALLONS_PER_MIN" {e}";   // {s} = <tr><th>, {m} = </th><td>, {e} = </td></tr>
 
 const char S_MAIN_MENU[] PROGMEM = D_MAIN_MENU;
 const char S_CONFIGURATION[] PROGMEM = D_CONFIGURATION;
diff --git a/sonoff/language/bg-BG.h b/sonoff/language/bg-BG.h
index 2214634f9..bd71bf38c 100644
--- a/sonoff/language/bg-BG.h
+++ b/sonoff/language/bg-BG.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Помощен топик"
 #define D_FALSE "Невярно"
 #define D_FILE "Файл"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Свободна памет"
 #define D_FREQUENCY "Честота"
 #define D_GAS "Газ"
@@ -156,6 +157,7 @@
 #define D_TO "към"
 #define D_TOGGLE "Превключване"
 #define D_TOPIC "Топик"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Предаване"
 #define D_TRUE "Вярно"
 #define D_TVOC "TVOC"
@@ -492,6 +494,10 @@
 #define D_TX20_SOUTH "Ю"
 #define D_TX20_WEST "З"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Няма"
 #define D_SENSOR_USER          "Потребит."
@@ -576,12 +582,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "h"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"
diff --git a/sonoff/language/cs-CZ.h b/sonoff/language/cs-CZ.h
index 41d4fc9de..a0b48f627 100644
--- a/sonoff/language/cs-CZ.h
+++ b/sonoff/language/cs-CZ.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Záložní topic"
 #define D_FALSE "Nepravda"
 #define D_FILE "Soubor"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Volná paměť"
 #define D_FREQUENCY "Kmitočet"
 #define D_GAS "Plyn"
@@ -156,6 +157,7 @@
 #define D_TO "do"
 #define D_TOGGLE "Přepni"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Odešli"
 #define D_TRUE "Pravda"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "J"
 #define D_TX20_WEST "Z"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Není"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "hod"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/de-DE.h b/sonoff/language/de-DE.h
index 0808c91c4..dbcc39b9a 100644
--- a/sonoff/language/de-DE.h
+++ b/sonoff/language/de-DE.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback-Topic"
 #define D_FALSE "falsch"
 #define D_FILE "Datei"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Freier Arbeitsspeicher"
 #define D_FREQUENCY "Frequenz"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "zu"
 #define D_TOGGLE "An/Aus"
 #define D_TOPIC "topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Übertragen"
 #define D_TRUE "wahr"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "None"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "h"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"
diff --git a/sonoff/language/el-GR.h b/sonoff/language/el-GR.h
index 0e483759d..20e4ed47a 100644
--- a/sonoff/language/el-GR.h
+++ b/sonoff/language/el-GR.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback Topic"
 #define D_FALSE "Ψευδές"
 #define D_FILE "Αρχείο"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Ελεύθερη μνήμη"
 #define D_FREQUENCY "Συχνότητα"
 #define D_GAS "Αέριο"
@@ -156,6 +157,7 @@
 #define D_TO "έως"
 #define D_TOGGLE "Εναλλαγή"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Μετάδοση"
 #define D_TRUE "Αληθές"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "Ν"
 #define D_TX20_WEST "Δ"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Κανένα"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/en-GB.h b/sonoff/language/en-GB.h
index d5e792462..911e88d29 100644
--- a/sonoff/language/en-GB.h
+++ b/sonoff/language/en-GB.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback Topic"
 #define D_FALSE "False"
 #define D_FILE "File"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Free Memory"
 #define D_FREQUENCY "Frequency"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "to"
 #define D_TOGGLE "Toggle"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Transmit"
 #define D_TRUE "True"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "None"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,15 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
-
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/es-AR.h b/sonoff/language/es-AR.h
index baf9838bf..9aca4f417 100644
--- a/sonoff/language/es-AR.h
+++ b/sonoff/language/es-AR.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "FallbackTopic"
 #define D_FALSE "Falso"
 #define D_FILE "Archivo"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Memoria Libre"
 #define D_FREQUENCY "Frecuencia"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "a"
 #define D_TOGGLE "Conmutar"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Transmitir"
 #define D_TRUE "Verdadero"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "O"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Ninguno"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/fr-FR.h b/sonoff/language/fr-FR.h
index 0b7d29eb7..36e8566f3 100644
--- a/sonoff/language/fr-FR.h
+++ b/sonoff/language/fr-FR.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Topic de secours"
 #define D_FALSE "Faux"
 #define D_FILE "Fichier"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Mémoire libre"
 #define D_FREQUENCY "Fréquence"
 #define D_GAS "Gaz"
@@ -156,6 +157,7 @@
 #define D_TO "à"
 #define D_TOGGLE "Inverser"
 #define D_TOPIC "Topic"      // Keep MQTT keyword
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Transmettre"
 #define D_TRUE "Vrai"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "O"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Aucun"
 #define D_SENSOR_USER          "Utilisateur"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "h"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"
diff --git a/sonoff/language/he-HE.h b/sonoff/language/he-HE.h
index b26529cf2..c6061d05a 100644
--- a/sonoff/language/he-HE.h
+++ b/sonoff/language/he-HE.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "נושא לחזרה"
 #define D_FALSE "שגוי"
 #define D_FILE "קובץ"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "זכרון פנוי"
 #define D_FREQUENCY "תדר"
 #define D_GAS "גז"
@@ -156,6 +157,7 @@
 #define D_TO "ל"
 #define D_TOGGLE "מתג"
 #define D_TOPIC "נושא"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "עבר"
 #define D_TRUE "נכון"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "None"
 #define D_SENSOR_USER          "משתמש"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/hu-HU.h b/sonoff/language/hu-HU.h
index e8b818029..76628df43 100644
--- a/sonoff/language/hu-HU.h
+++ b/sonoff/language/hu-HU.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "fallback topik"
 #define D_FALSE "Hamis"
 #define D_FILE "Fájl"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Szabad memória"
 #define D_FREQUENCY "Frekvencia"
 #define D_GAS "Gáz"
@@ -156,6 +157,7 @@
 #define D_TO "-nak"
 #define D_TOGGLE "Megfordítás"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Továbbít"
 #define D_TRUE "Igaz"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "D"
 #define D_TX20_WEST "NY"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Nincs"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "h"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/it-IT.h b/sonoff/language/it-IT.h
index db8e58475..b77fc7282 100644
--- a/sonoff/language/it-IT.h
+++ b/sonoff/language/it-IT.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Topic Riserva"
 #define D_FALSE "Falso"
 #define D_FILE "File"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Memoria Libera"
 #define D_FREQUENCY "Frequenza"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "a"
 #define D_TOGGLE "Toggle"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Trasmesso"
 #define D_TRUE "Vero"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Nessuno"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/ko-KO.h b/sonoff/language/ko-KO.h
index ddfaba8d3..c1c5d2b43 100644
--- a/sonoff/language/ko-KO.h
+++ b/sonoff/language/ko-KO.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback Topic"
 #define D_FALSE "거짓"
 #define D_FILE "파일"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "남은 메모리"
 #define D_FREQUENCY "빈도"
 #define D_GAS "가스"
@@ -156,6 +157,7 @@
 #define D_TO "to"
 #define D_TOGGLE "전환"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "전송"
 #define D_TRUE "참"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "없음"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "시"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/nl-NL.h b/sonoff/language/nl-NL.h
index 9e428165d..dc78b1445 100644
--- a/sonoff/language/nl-NL.h
+++ b/sonoff/language/nl-NL.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback Topic"
 #define D_FALSE "Onwaar"
 #define D_FILE "Bestand"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Vrij geheugen"
 #define D_FREQUENCY "Frequentie"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "naar"
 #define D_TOGGLE "Toggle"  // Wissel, Tuimel
 #define D_TOPIC "Topic"  // Onderwerp
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Verzend"
 #define D_TRUE "Waar"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Geen"
 #define D_SENSOR_USER          "Gebruiker"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "h"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/pl-PL.h b/sonoff/language/pl-PL.h
index 0f13d248a..20507fc87 100644
--- a/sonoff/language/pl-PL.h
+++ b/sonoff/language/pl-PL.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Zastępczy temat"
 #define D_FALSE "Fałsz"
 #define D_FILE "Plik"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Wolna pamięć"
 #define D_FREQUENCY "Frequency"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "do"
 #define D_TOGGLE "Przełącz"
 #define D_TOPIC "Temat"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Wyślij"
 #define D_TRUE "Prawda"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Brak"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Godz"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/pt-BR.h b/sonoff/language/pt-BR.h
index 63efc3f1e..433390fb6 100644
--- a/sonoff/language/pt-BR.h
+++ b/sonoff/language/pt-BR.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Tópico para retornar"
 #define D_FALSE "Falso"
 #define D_FILE "Arquivo"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Memória livre"
 #define D_FREQUENCY "Frequência"
 #define D_GAS "Gás"
@@ -156,6 +157,7 @@
 #define D_TO "Para"
 #define D_TOGGLE "Inverter"
 #define D_TOPIC "Tópico"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Transmitir"
 #define D_TRUE "Verdadeiro"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Nenhum"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "H"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/pt-PT.h b/sonoff/language/pt-PT.h
index 171f33d9b..4240008b4 100644
--- a/sonoff/language/pt-PT.h
+++ b/sonoff/language/pt-PT.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Tópico para retornar"
 #define D_FALSE "Falso"
 #define D_FILE "Ficheiro"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Memoria Livre"
 #define D_FREQUENCY "Frequency"
 #define D_GAS "Gás"
@@ -156,6 +157,7 @@
 #define D_TO "para"
 #define D_TOGGLE "Pressionar"
 #define D_TOPIC "Tópico"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Transmitir"
 #define D_TRUE "Verdadeiro"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Nenhum"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/ru-RU.h b/sonoff/language/ru-RU.h
index e4112953c..2c39bb456 100644
--- a/sonoff/language/ru-RU.h
+++ b/sonoff/language/ru-RU.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Топик обратной связи"
 #define D_FALSE "Ложно"
 #define D_FILE "Файл"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Свободная память"
 #define D_FREQUENCY "Frequency"
 #define D_GAS "Газ"
@@ -156,6 +157,7 @@
 #define D_TO "до"
 #define D_TOGGLE "Переключить"
 #define D_TOPIC "Топик"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Передать"
 #define D_TRUE "Истина"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "-нет-"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "А"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Ч"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/sk-SK.h b/sonoff/language/sk-SK.h
index cf99703c8..a8134677b 100644
--- a/sonoff/language/sk-SK.h
+++ b/sonoff/language/sk-SK.h
@@ -75,6 +75,7 @@
 #define D_COUNTER "Počítadlo"
 #define D_CURRENT "Prúd"          // As in Voltage and Current
 #define D_DATA "Dáta"
+#define D_FLOW_RATE "Flow rate"
 #define D_DARKLIGHT "Tmavý"
 #define D_DEBUG "Debug"
 #define D_DISABLED "Zablokované"
@@ -156,6 +157,7 @@
 #define D_TO "do"
 #define D_TOGGLE "Prepni"
 #define D_TOPIC "Topic"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Odošli"
 #define D_TRUE "Pravda"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "J"
 #define D_TX20_WEST "Z"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Žiaden"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "hod"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/sv-SE.h b/sonoff/language/sv-SE.h
index 6a92c1bc1..786d5c766 100644
--- a/sonoff/language/sv-SE.h
+++ b/sonoff/language/sv-SE.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Reservämne"
 #define D_FALSE "Falskt"
 #define D_FILE "Fil"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Ledigt minne"
 #define D_FREQUENCY "Frekvens"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "till"
 #define D_TOGGLE "Växla"
 #define D_TOPIC "Ämne"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Sänd"
 #define D_TRUE "Sant"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "V"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "Ingen"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "Tim"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "ink"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/tr-TR.h b/sonoff/language/tr-TR.h
index b887c89c2..59cd95023 100755
--- a/sonoff/language/tr-TR.h
+++ b/sonoff/language/tr-TR.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Geri İletim Topiği"
 #define D_FALSE "False"
 #define D_FILE "Dosya"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Boş Hafıza"
 #define D_FREQUENCY "Frekans"
 #define D_GAS "Gas"
@@ -156,6 +157,7 @@
 #define D_TO "den"
 #define D_TOGGLE "Geçiş Tuşu"
 #define D_TOPIC "Başlık"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "İletim"
 #define D_TRUE "True"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "None"
 #define D_SENSOR_USER          "User"
@@ -576,11 +581,15 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "A"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HOUR "Hr"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/uk-UK.h b/sonoff/language/uk-UK.h
index 0efdd1c94..4cceb18a6 100644
--- a/sonoff/language/uk-UK.h
+++ b/sonoff/language/uk-UK.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Топік зворотнього зв'язку"
 #define D_FALSE "Помилково"
 #define D_FILE "Файл"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "Вільна память"
 #define D_FREQUENCY "Частота"
 #define D_GAS "Газ"
@@ -156,6 +157,7 @@
 #define D_TO "до"
 #define D_TOGGLE "Перекл."
 #define D_TOPIC "Топік"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "Передати"
 #define D_TRUE "Істина"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "-відсутньо-"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "А"
 #define D_UNIT_CENTIMETER "cм"
 #define D_UNIT_HERTZ "Гц"
 #define D_UNIT_HOUR "Г"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/language/zh-CN.h b/sonoff/language/zh-CN.h
index 88767053b..9612b370a 100644
--- a/sonoff/language/zh-CN.h
+++ b/sonoff/language/zh-CN.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "回退主题"
 #define D_FALSE "False"
 #define D_FILE "文件:"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "空闲内存"
 #define D_FREQUENCY "频率"
 #define D_GAS "气体"
@@ -156,6 +157,7 @@
 #define D_TO "to"
 #define D_TOGGLE "切换"
 #define D_TOPIC "主题"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "发送"
 #define D_TRUE "True"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "南"
 #define D_TX20_WEST "西"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "无"
 #define D_SENSOR_USER          "User"
@@ -576,11 +581,15 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "安"
 #define D_UNIT_CENTIMETER "厘米"
 #define D_UNIT_HOUR "时"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "千克"
 #define D_UNIT_KILOMETER_PER_HOUR "公里/时"  // or "km/h"
diff --git a/sonoff/language/zh-TW.h b/sonoff/language/zh-TW.h
index 11f85eef2..0a1f8ed03 100644
--- a/sonoff/language/zh-TW.h
+++ b/sonoff/language/zh-TW.h
@@ -93,6 +93,7 @@
 #define D_FALLBACK_TOPIC "Fallback Topic"
 #define D_FALSE "False"
 #define D_FILE "文件:"
+#define D_FLOW_RATE "Flow rate"
 #define D_FREE_MEMORY "可用記憶體"
 #define D_FREQUENCY "Frequency"
 #define D_GAS "氣體"
@@ -156,6 +157,7 @@
 #define D_TO "to"
 #define D_TOGGLE "切換"
 #define D_TOPIC "主題"
+#define D_TOTAL_USAGE "Total Usage"
 #define D_TRANSMIT "發送"
 #define D_TRUE "True"
 #define D_TVOC "TVOC"
@@ -492,6 +494,9 @@
 #define D_TX20_SOUTH "S"
 #define D_TX20_WEST "W"
 
+//xsns_43_hre.ino
+#define D_LOG_HRE "HRE: "
+
 // sonoff_template.h - keep them as short as possible to be able to fit them in GUI drop down box
 #define D_SENSOR_NONE          "None"
 #define D_SENSOR_USER          "User"
@@ -576,12 +581,16 @@
 #define D_SENSOR_TXD           "Serial Tx"
 #define D_SENSOR_RXD           "Serial Rx"
 #define D_SENSOR_ROTARY        "Rotary"     // Suffix "1A"
+#define D_SENSOR_HRE_CLOCK     "HRE Clock"
+#define D_SENSOR_HRE_DATA      "HRE Data"
 
 // Units
 #define D_UNIT_AMPERE "安"
 #define D_UNIT_CENTIMETER "cm"
 #define D_UNIT_HERTZ "Hz"
 #define D_UNIT_HOUR "時"
+#define D_UNIT_GALLONS "gal"
+#define D_UNIT_GALLONS_PER_MIN "g/m"
 #define D_UNIT_INCREMENTS "inc"
 #define D_UNIT_KILOGRAM "kg"
 #define D_UNIT_KILOMETER_PER_HOUR "km/h"  // or "km/h"
diff --git a/sonoff/sonoff_template.h b/sonoff/sonoff_template.h
index cf5a1af78..b50c2184b 100644
--- a/sonoff/sonoff_template.h
+++ b/sonoff/sonoff_template.h
@@ -178,6 +178,8 @@ enum UserSelectablePins {
   GPIO_ROT1B,          // Rotary switch1 B Pin
   GPIO_ROT2A,          // Rotary switch2 A Pin
   GPIO_ROT2B,          // Rotary switch2 B Pin
+  GPIO_HRE_CLOCK,      // Clock/Power line for HR-E Water Meter
+  GPIO_HRE_DATA,       // Data line for HR-E Water Meter
   GPIO_SENSOR_END };
 
 // Programmer selectable GPIO functionality
@@ -241,6 +243,7 @@ const char kSensorNames[] PROGMEM =
   D_SENSOR_CSE7766_TX "|" D_SENSOR_CSE7766_RX "|"
   D_SENSOR_ARIRFRCV "|" D_SENSOR_TXD "|" D_SENSOR_RXD "|"
   D_SENSOR_ROTARY "1a|" D_SENSOR_ROTARY "1b|" D_SENSOR_ROTARY "2a|" D_SENSOR_ROTARY "2b|"
+  D_SENSOR_HRE_CLOCK "|" D_SENSOR_HRE_DATA "|"
   ;
 
 /********************************************************************************************/
@@ -584,7 +587,11 @@ const uint8_t kGpioNiceList[] PROGMEM = {
   GPIO_ROT1B,          // Rotary switch1 B Pin
   GPIO_ROT2A,          // Rotary switch2 A Pin
   GPIO_ROT2B,          // Rotary switch2 B Pin
-  GPIO_ARIRFRCV        // AliLux RF Receive input
+  GPIO_ARIRFRCV,       // AliLux RF Receive input
+#ifdef USE_HRE
+  GPIO_HRE_CLOCK,
+  GPIO_HRE_DATA
+#endif  
 };
 
 const uint8_t kModuleNiceList[MAXMODULE] PROGMEM = {
diff --git a/sonoff/xsns_43_hre.ino b/sonoff/xsns_43_hre.ino
new file mode 100644
index 000000000..5a25b6784
--- /dev/null
+++ b/sonoff/xsns_43_hre.ino
@@ -0,0 +1,289 @@
+/*
+  xsns_43_hre.ino - Badger HR-E Water Meter Encoder interface
+
+  Copyright (C) 2019  Jon Little
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*********************************************************************************************\
+ * HR-E LCD Water meter register interface
+ *
+ * https://www.badgermeter.com/business-lines/utility/high-resolution-lcd-encoders-hr-e-lcd/
+ * Source: Jon Little, https://github.com/burundiocibu/particle/blob/master/water_meter/src/HRE_Reader.cpp
+ *
+ * This code marches the bits out the data line as ASCII characters with the form
+ *    KG44?Q45484=0444444V;RB000000022;IB018435683
+ * where the RB...; is the miligalons used
+ *
+ * Note that this sensor takes a _long_ time to read. 62 bits * 4 ms/bit for the 
+ * sync sequence plus 46 bytes * 40 ms/byte = 2088 ms minimum. If we aren't alligned
+ * to the sync sequence, it could be almost twice that.
+ * To keep from bogging the kernel down, we read 8 bits at a time on the 50 ms callback.
+ * It will take seconds to discover if the device is there.
+ *
+ * In lieu of an actual schematic to describe the electrical interface, here is a description:
+ * 
+ * hre_clock_pin: drives the power/clock for the water meter through a 1k resister to
+ *   the base of a pnp transistor
+ * hre_data_pin: is the data and has a 1 k pulldown
+ * 
+ * The pnp transitor has the collector connected to the power/clock and is pulled up
+ * to +5 via a 1 k resistor.
+ * The emitter is connected to ground
+ * 
+\*********************************************************************************************/
+
+#ifdef USE_HRE
+
+#define XSNS_43             43
+
+enum hre_states {
+   hre_idle,    // Initial state,
+   hre_sync,    // Start search for sync sequence
+   hre_syncing, // Searching for sync sequence
+   hre_read,    // Start reading data block
+   hre_reading, // Reading data
+   hre_sleep,   // Start sleeping
+   hre_sleeping // pausing before reading again
+};
+
+hre_states hre_state = hre_idle;
+
+float hre_usage = 0; // total water usage, in gal
+float hre_rate = 0;  // flow rate, in gal/min
+uint32_t hre_usage_time = 0; // uptime associated with hre_usage and hre_rate
+
+int hre_read_errors = 0; // total number of read errors since boot
+bool hre_good =  false;
+
+
+// The settling times here were determined using a single unit hooked to a scope
+int hreReadBit()
+{
+   digitalWrite(pin[GPIO_HRE_CLOCK], HIGH);
+   delay(1);
+   int bit = digitalRead(pin[GPIO_HRE_DATA]);
+   digitalWrite(pin[GPIO_HRE_CLOCK], LOW);
+   delay(1);
+   return bit;
+}
+
+// With the times in the HreReadBit routine, a characer will take
+// 20 ms plus io time.
+char hreReadChar(int &parity_errors)
+{
+   // start bit
+   hreReadBit();
+
+   unsigned ch=0;
+   int sum=0;
+   for (int i=0; i<7; i++)
+   {
+      int b = hreReadBit();
+      ch |= b << i;
+      sum += b;
+   }
+
+   // parity
+   if ( (sum & 0x1) != hreReadBit())
+      parity_errors++;
+
+   // stop bit
+   hreReadBit();
+
+   return ch;
+}
+
+void hreInit(void)
+{
+   hre_read_errors = 0;
+   hre_good = false;
+   
+   pinMode(pin[GPIO_HRE_CLOCK], OUTPUT);
+   pinMode(pin[GPIO_HRE_DATA], INPUT);
+
+   // Note that the level shifter inverts this line and we want to leave it
+   // high when not being read.
+   digitalWrite(pin[GPIO_HRE_CLOCK], LOW);
+   
+   hre_state = hre_sync;
+}
+
+
+void hreEvery50ms(void)
+{
+   static int sync_counter = 0;   // Number of sync bit reads
+   static int sync_run = 0; // Number of consecutive '1's read
+
+   static uint32_t curr_start = 0; // uptime when entered hre_reading for current read
+   static int read_counter = 0; // number of bytes in the current read
+   static int parity_errors = 0; // Number of parity errors in current read
+   static char buff[46];  // 8 char and a term
+
+   static char ch;
+   static size_t i;
+   
+   switch (hre_state)
+   {
+      case hre_sync:
+         if (uptime < 10)
+            break;
+         sync_run = 0;
+         sync_counter = 0;
+         hre_state = hre_syncing;
+         AddLog_P(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE "hre_state:hre_syncing"));
+         break;
+         
+      case hre_syncing:
+         // Find the header, a string of 62 '1's
+         // Since each bit taks 2 ms, we just read 20 bits at a time
+         for (int i=0; i<20; i++)
+         {
+            if (hreReadBit())
+               sync_run++;
+            else
+               sync_run = 0;
+            if (sync_run == 62)
+            {
+               hre_state = hre_read;
+               break;
+            }
+            sync_counter++;
+         }
+         // If the meter doesn't get in sync within 1000 bits, give up for now
+         if (sync_counter > 1000)
+         {
+            hre_state = hre_sleep;
+            AddLog_P(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE D_ERROR));
+         }
+         break;
+
+         // Start reading the data block
+      case hre_read:
+         AddLog_P2(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE "sync_run:%d, sync_counter:%d"), sync_run, sync_counter);
+         read_counter = 0;
+         parity_errors = 0;
+         curr_start = uptime;
+         memset(buff, 0, sizeof(buff));
+         hre_state = hre_reading;
+         AddLog_P(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE "hre_state:hre_reading"));
+         // So this is intended to fall through to the hre_reading section.
+         // it seems that if there is much of a delay between getting the sync
+         // bits and starting the read, the HRE won't output the message we
+         // are looking for...
+         
+      case hre_reading:
+         // Read two characters at a time...
+         buff[read_counter++] = hreReadChar(parity_errors);
+         buff[read_counter++] = hreReadChar(parity_errors);
+         
+         if (read_counter == 46)
+         {
+            AddLog_P2(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE "pe:%d, re:%d, buff:%s"),
+                      parity_errors, hre_read_errors, buff);
+            if (parity_errors == 0)
+            {
+               float curr_usage;
+               curr_usage = 0.01 * atol(buff+24); // useage in gal
+               if (hre_usage_time)
+               {
+                  double dt = 1.666e-2 * (curr_start - hre_usage_time); // dt in minutes
+                  hre_rate = (curr_usage - hre_usage)/dt; // gallons/min
+               }
+               hre_usage = curr_usage;
+               hre_usage_time = curr_start;
+               hre_good = true;
+               
+               hre_state = hre_sleep;
+            }
+            else
+            {
+               hre_read_errors++;
+               hre_state = hre_sleep;
+            }
+         }
+         break;
+         
+      case hre_sleep:
+         hre_usage_time = curr_start;
+         hre_state = hre_sleeping;
+         AddLog_P(LOG_LEVEL_DEBUG, PSTR(D_LOG_HRE "hre_state:hre_sleeping"));
+
+      case hre_sleeping:
+         // If there isn't some delay between readings, rate calculations
+         // aren't as accurate. 27 seconds will give about a 30 second refresh rate
+         if (uptime - hre_usage_time >= 27)
+            hre_state = hre_sync;
+   }
+}
+
+void hreShow(boolean json)
+{
+   if (!hre_good)
+      return;
+   
+   const char *id = "HRE";
+
+   char usage[16];
+   char rate[16];
+   dtostrfd(hre_usage, 2, usage);
+   dtostrfd(hre_rate, 3, rate);
+   
+   if (json)
+   {
+      ResponseAppend_P(JSON_SNS_GNGPM, id, usage, rate);
+#ifdef USE_WEBSERVER
+   }
+   else
+   {
+      WSContentSend_PD(HTTP_SNS_GALLONS, id, usage);
+      WSContentSend_PD(HTTP_SNS_GPM, id, rate);
+#endif  // USE_WEBSERVER
+   }
+}
+
+
+/*********************************************************************************************\
+ * Interface
+\*********************************************************************************************/
+bool Xsns43(byte function)
+{
+   // If we don't have pins assigned give up quickly.
+   if (pin[GPIO_HRE_CLOCK] >= 99 || pin[GPIO_HRE_DATA] >= 99)
+      return false;
+   
+   switch (function)
+   {
+      case FUNC_INIT:
+         hreInit();
+         break;
+      case FUNC_EVERY_50_MSECOND:
+         hreEvery50ms();
+         break;
+      case FUNC_EVERY_SECOND:
+         break;
+      case FUNC_JSON_APPEND:
+         hreShow(1);
+         break;
+#ifdef USE_WEBSERVER
+      case FUNC_WEB_SENSOR:
+         hreShow(0);
+         break;
+#endif  // USE_WEBSERVER
+   }
+   return false;
+}
+
+#endif  // USE_HRE