Braodlink rm3 pro and fireplace

[keithh666 (Keith Hull)]

You could perhaps use an ESP8266 and a relay in parallel with switch, if it will fit behind the switch (wemos D1 mini + relay may work if you can get power to it)

Simple Gas Fireplace using an ESP8266 and a relay

I put together an ESP8266/Wemos D1 Mini based gas fireplace controller that uses MQTT/Home Assistant. It also automatically turns off after X minutes, which can be configured. It’s a very inexpensive project that is really cool. Here’s the link to it. If anyone has any questions about it, please feel free to ask.