Updated KNX Features (markdown)

KNX-Features.md

@@ -116,3 +116,19 @@ In rules we can use the events to catch the reception of VALUES from KNX to thos
 Example: ``rule on event#knxrx_val1 do var1 %value% endon`` to store the value received in the variable VAR1
 
 Also, if a Read request is received from KNX Network, we can use that in a rule as for example: ``rule on event#knxrx_req1 do knxtx_val1 %var3% endon``
+
+** 6) Rule to send KNX Telegramm with BH1750 Sensor Data:**
+
+* If you want to send your sensor values by KNX **every teleperiod time** to the Group Address defined in KNX_TX1, you can use the following rule:
+
+```
+rule1 1
+rule1 on tele-BH1750#Illuminace do knxtx_val1 %value% endon
+```
+
+* If you want to send your sensor values by KNX only **when it changes in a delta of 10 lx** to the Group Address defined in KNX_TX1, you can use the following rule:
+
+```
+rule1 1
+rule1 on system#boot do backlog var1 0; var2 0 endon on BH1750#Illuminace>%var1% do backlog var1 %value%; knxtx_val1 %value%; var2 %value%; add1 2; sub2 2 endon on BH1750#Illuminace<%var2% do backlog var2 %value%; knxtx_val1 %value%; var1 %value%; add1 2; sub2 2 endon
+```