SONOFF MINIR4 ZBMINI Extreme Wi-Fi/Zigbee MINI Smart Switch EWeLink APP Remote Control Control Detach Relay Mode Smart Switch Description: Model:MINIR4 Dimension:39.5x33×16.8 mm casing material: PC V0 Wifi:IEEE 802.11blg/n 2.4GHz Input:100-240V ~ 50/60Hz 10A Max outputL100-240V ~ 50/60Hz 10A Max Specifications: Super Tiny SizeIts compact size allows it to be installed in various mounting boxes, including the smallest European standard. External Switch ControlEasily connect to the momentary switch, door exit switch, SPDT switch, latching switch, and even dry contact sensors. Detach Relay ModeMINIR4 has detach relay mode, which means the states of external switches and relay are separated, so operating the external switch button wont affect the relay state. eWeLink-Remote ControlMINIR4 is a smart switch with the gateway function of eWeLink-Remote. You can add eWeLink-Remote sub-devices, R5 and S-MATE, after pairing with MINIR4, both R5 and S-MATE can act as remote controllers to control MINIR4 locally through the eWeLink-Remote signal. Safe & ReliableTÜV, CE, and FCC certifications ensure a safer and more reliable product. Package Included: 1*Smart Switch