Store Categories Store Categories SONOFF Smart Switch DIY Smart Wall Switch Smart Lighting ZigBee-Series Accessories Smart Home Security Smart Plug WOOLLEY Smart Switch DIY Smart Wall Switch ZigBee-Series Smart Plug NEXTION Basic Series Discovery Series Enhanced Series Intelligent Series Nextion Accessories Other SONOFF WiFi Smart Light Switch Two-Way,DIY Detach Relay Mode, APP Control 1-5PCS Product Description 【Super Tiny Size】Its compact size allows it to be installed in various mounting boxes, including the smallest European standard. 【External Switch Control】Easily connect to the momentary switch, door exit switch, SPDT switch, latching switch, and even dry contact sensors. 【Detach Relay Mode】MINIR4 has “detach relay” mode, which means the states of external switches and relay are sep