Has anyone tried this with SmartThings? How reliable is it. Looks like a great feature, surprised other relay manufacturers don’t implement this ?
Gemini explanation below, and it’s not limited to smart bulbs, it can be used with dumb bulbs too. You need a two way dumb switch and you jumper l1 and l2
The Magic Switch mode on the Sonoff Basic R4 (the updated version of the R2/R3 series) is a specialized firmware feature designed to solve the “smart bulb dilemma” where turning off a traditional wall switch cuts power to the device, making it unreachable via apps or voice commands. When enabled, the switch allows you to toggle the light’s state using a standard non-smart rocker switch without physically disconnecting the power to the relay. It utilizes a “flicker-to-toggle” logic where the device detects a momentary break in the circuit as a command to flip the light’s status, ensuring the Sonoff remains energized and online at all times. This effectively transforms a “dumb” wall switch into a remote trigger for the smart relay while maintaining constant connectivity for your smart home ecosystem.