Hi all!

After researching thru ESP modules firmware options I found a better option of the firmware for the switch. It's ESPurna firmware. The main advantages I see in ESPurna are: compile-time module definition and async MQTT.

Currently ESPurna firmware for LightFox dual is tested on my instances. It works OK. The firmware is available for download on github: https://github.com/foxel/esp-dual-rf-switch/blob/v3/esp01-firmware/espurna-1.13.4-dev-foxel-lightfox-dual.bin