Hi, I'm controlling a ESP8266 4 channel relay remotely via MQTT like this: DC 12V ESP8266 WIFI 4-Channel Relay Module Remote Control Switch Wireless Transmitter For Smart Home
All fine when sending ON and OFF commands to the relay.
I'd like to publish to an MQTT topic when having the acknowledge of each relay but I'm not finding it.
I've tried to listen to the TCP port of the relay but nothing appears... I've tried also to use a tcp request node but no answer when switching on and off the relay...
Any idea how to send ack messages to an mqtt topic or how get the current status of the relay?