Remote light switch - relay and wall switch - Project Guidance

June 05,2024

hi all, Trying to figure out this one, i would like to install ESP8266 with a relay and wall light switch, which is quite simple BUT, i also want my ESP8266 to know if the light is ON if i use the switch. Basic diagram like on the image bellow works, i can turn ON and OFF the light with either wall switch remotely through the relay. The problem is when i use phone app to control the light, i do not know if the light has been turned ON with the switch. i have seen somewhere that someone used 1

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