S-MATE extreme switch mate can connect the ordinary 1/2/3-button wall switch which acts as a remote controller. S-MATE extreme switch mate is battery-powered, so it does not require a neutral wire in the mounting boxSONOFF S-MATE extreme switch mate is an “eWeLink-Remote sub-device”. SONOFF S-MATE extreme switch mate can locally control the devices through the eWeLink Remote signal after connecting with the eWeLink Remote gateway device (such as MINIR4, DUALR3/DUALR3 Lite, M5, NSPanel Pro) and setting a local scene. S-MATE2 also controls any other SONOFF smart device in the smart scene when there is a network connection. It is "eWeLink-Remote" Control, click to learn moreCompared with S-MATE, S-MATE2 size is smaller, the battery life is longer(5 years), and double-click and long press are available when S-MATE2 is connected to a push button switch—Model : S-MATE2Input : 3V⎓Battery model : CR2477Channel : 1/2/3Color : WhiteCasing material : ABSDimension : 40.3×37.4×18.3mm—
