diff --git a/Commands.md b/Commands.md
index 5de6099a..4591e80d 100644
--- a/Commands.md
+++ b/Commands.md
@@ -369,7 +369,7 @@ See [Linux Infrared Remote Control (LIRC)](http://www.lirc.org/) for more inform
 
 Command		 | Parameters
 :---		 | :---
-IRsend | <a id="IRsend"></a>Send an IR remote control code as a decimal or hexadecimal string in a JSON payload. In order to send IR data, _**you must configure one of the free device GPIO as 'IRsend (8)'**_.<BR><BR>`{"Protocol":"<value>","Bits":<value>,"Data":<value>}`<BR><BR>`"Protocol":"NEC"\|"SONY"\|"RC5"\|"RC6"\|"DISH"\|"JVC"\|"PANASONIC"\|"SAMSUNG"`<BR>`"Bits":1..32` = required number of data bits<BR>&nbsp;&nbsp;&nbsp;&nbsp;for PANASONIC protocol this parameter is the the address, not the number of bits<BR><BR>`"Data":1..(2^32)-1` = data frame as 32 bit decimal.<BR>&nbsp;&nbsp;&nbsp;&nbsp;e.g., `IRsend {"Protocol":"NEC","Bits":32,"Data":2170978686}`<BR>**or**<BR>`"Data":0x1..0xFFFFFFFF` = data frame as 32 bit hexadecimal.<BR>&nbsp;&nbsp;&nbsp;&nbsp;e.g., `IRsend {"Protocol":"NEC","Bits":32,"Data":0x8166817E}`<BR><BR>Alternatively, you can send IR remote control codes using [RAW command encoding](IRSend-RAW-Encoding).<BR><BR>Information on [Receiving Infrared Data](Receiving-Infrared-Remote-Control-Data)<a id="IRhvac"></a>
+IRsend | <a id="IRsend"></a>Send an IR remote control code as a decimal or hexadecimal string in a JSON payload. In order to send IR data, _**you must configure one of the free device GPIO as 'IRsend (8)'. GPIO01 nor GPIO03 cannot be used.**_<BR><BR>`{"Protocol":"<value>","Bits":<value>,"Data":<value>}`<BR><BR>`"Protocol":"NEC"\|"SONY"\|"RC5"\|"RC6"\|"DISH"\|"JVC"\|"PANASONIC"\|"SAMSUNG"`<BR>`"Bits":1..32` = required number of data bits<BR>&nbsp;&nbsp;&nbsp;&nbsp;for PANASONIC protocol this parameter is the the address, not the number of bits<BR><BR>`"Data":1..(2^32)-1` = data frame as 32 bit decimal.<BR>&nbsp;&nbsp;&nbsp;&nbsp;e.g., `IRsend {"Protocol":"NEC","Bits":32,"Data":2170978686}`<BR>**or**<BR>`"Data":0x1..0xFFFFFFFF` = data frame as 32 bit hexadecimal.<BR>&nbsp;&nbsp;&nbsp;&nbsp;e.g., `IRsend {"Protocol":"NEC","Bits":32,"Data":0x8166817E}`<BR><BR>Alternatively, you can send IR remote control codes using [RAW command encoding](IRSend-RAW-Encoding).<BR><BR>Information on [Receiving Infrared Data](Receiving-Infrared-Remote-Control-Data)<a id="IRhvac"></a>
 IRhvac | Send HVAC IR remote control code as JSON string<Br>`{"Vendor":"<value>","Power":<value>,"Mode":”<value>”, "FanSpeed":”<value>”,"Temp":<value>}`<BR>`"Vendor":"Toshiba"\|"Mitsubishi"\|"LG"\|"Fujitsu"`<BR>`"Power":0\|1`<BR>`"Mode":"Hot"\|"Cold"\|"Dry"\|"Auto"`<BR>`"FanSpeed":"1"\|"2"\|"3"\|"4"\|"5"\|"Auto"\|"Silence"` <BR>`"Temp":17..30`
 |		See also | [`SetOption29`](#SetOption29)  - Set IR received data format<BR>[`SetOption38`](#SetOption38)  - Set IR received protocol sensitivity<BR>[`SetOption58`](#SetOption58) - [IR Raw data in JSON message](https://github.com/arendst/Sonoff-Tasmota/issues/2116#issuecomment-440716483)