【Scene Control】All SONOFF devices can be controlled by setting the smart scenes when the internet connection is available.
【】Control the device which has the eWeLink-Remote gateway feature even offline, 90M remote control without Network.
【Multi Trigger Ways】Trigger the smart scene by clicking, double click, or long-press. Up to 18 trigger actions to set different scenes.
【Two-way or Multi-way Control】Simple way to achieve two-way or multi-way control by eWeLink-Remote with M5 smart wall switch.
【Free-wiring Stick-on】Pasted with 3M adhesive or easily use by Magnetic attraction.

Note : SONOFF  smart switch is an eWeLink-Remote gateway, which can be used with R5 remote controller to realize two-way or multi-ways control without wiring even M5/S40/S40 LITE is offline.