Features: Smart Speaker Voice Control: control the switch without hands, compatible with the Alexa, Google Assistant, Tmall Genie. App Remote Control: remote control your lights from anywhere at anytime by smartphone. Relay Status Setting: don't worry about power failure, you can set this switch to restore the state after power on. Small and Compact: tiny body suitable for various of mounting boxes. Sharing Function: sharing the WiFi switch module with family members by Smart Life APP to control together. Specifications: Type: 1CH WIFI Switch Module / 2CH WIFI Switch Module / 3CH WIFI Switch Module / 4CH WIFI Switch Module (Optional) Max. Load: 1CH: LED 300W, 10A 2CH: LED 2*150W, 2*5A 3CH: LED 3*150W, 3*3.3A 4CH: LED 4*150W, 4*2.5A Material: ABS Voltage: AC100-240V, 50/60Hz Operation Frequency: 2.412GHz-2.484GHz Operation Temp.: -10~40 Protocol: WIFI IEEE 802.11b/g/n Operation Range: