Designed mini body, which is working with most of amounting boxes, switches and wall sockets. It is not only small, but also powerful, it can be used for most of home appliances and lightings. Features: 【Mini Body】Designed mini body, which suits for most of amounting boxes, switches and wall sockets. 【Support Two-way Control】This kind of switch module can achieve 2-way control after the simple physical wiring. And you can still manually control the light by the original switch. 【APP Remote Control】It is convenient to connect the module to Smart Life APP via WiFi connection. After you connect the switch module to APP, you can remote control it anywhere and anytime, which provide a comfortable and smart life. 【Voice Control】This switch module can work with Alexa, Google Home Assistant via simple voice command, which is really convenient to control the appliances on/off when you are busy. 【Relay Status Setting】Don't worry about power failure, you can set this switch to restore the state after power on. Specifications: Type: 1CH Zigbee Switch Module / 2CH Zigbee Switch Module / 3CH Zigbee Switch Module / 4CH Zigbee 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: 2.405GHz-2.480GHz Operation Temp.: -10~40℃ Protocol: Zigbee 3.0 Operation Range: <100m IP Rating: IP20 Item Size: 39 * 39 * 18mm / 1.54 * 1.54 * 0.71in Item Weight: 38g / 1.34oz Package Weight: 45g / 1.59oz Package Size: 6 * 4 * 2.3cm / 2.36 * 1.57 * 0.91in Package List: 1 * Smart Module 1 * User Manual (English) 1 * Smart Module 1 * User Manual (English)