Feature APP Remote Control- Support Smart Life APP /Tuya APP.- You can turn the light on or off via the mobile APP. Voice Control- Works with Google Assistant and Amazon Alexa.- You can turn the light on or off by voice control. Tuya ZigBee Mesh(ZigBee Version Module)- You can add up to 256pcs ZigBee devices in Tuya ZigBee Mesh Network.- Please make sure you already have a Tuya ZigBee Hub, it's a must for all the Tuya/Smart Life ZigBee devices. Work with wall switch- Compatible with wall manual switch, you wall switch still work.- You can turn the light on or off via the wall switch, mobile phone APP or voice control. Timer Function- You can set a timer to open or close the device at a specified time. Works with 2 Way Control: - The relay module can be connected to a two-way switch to switch on and off the downstairs lights from upstairs. Patent design- Dimensions: 46mm*46mm*18mm, can fit most EU wall box. Group Function-You can create group as you like, then you can manage your devices more efficient. Family Sharing- Devices can be shared with family members in the app. Specification Input Voltage: 100-250VAC, 50/60HzOutput Voltage: 100-250VAC, 50/60HzMax. Load: 16ADimensions: 46mm*46mm*18mmApp Name: Smart Life or TuyaWireless Protocol: ZigBee 3.0Works with toggle (forth and back) wall switch What's in the box? 1 * Relay Module1 * Screwdriver1 * Double-sided tape3 * Cables for Wiring1 * User Guide