Countdown Timing Function It has countdown/scheduled/loop timers to control home appliance on/off automatically. And you can set timer schedules to maintain an easy life. Create Group: You can create group as you like, then you can manage your devices more efficient. Control your lights anywhere App remote control your lights anywhere with your phone 2G, 3G, 4G network. Family Settings You can add family members in the APP and manage all the smart devices in your living room, bedroom, dining room, kitchen, study room, kids room, etc. Ultra thin compact design Dimensions: 47mm*48mm*22mm, can fit most EU wall box How to install the module? Specifications Input Voltage : 100-250VAC, 50/60HzOutput Voltage: 100-250VAC, 50/60HzMax. Load: 5A / GangWireless Type: ZigBee 3.0Compatible with: Zigbee2MQTT, conBee2 + HAAPP Name: Smart Life or Tuya APPVoice Control: Amazon Echo Alexa, Google AssistantDimensions: 47mm*48mm*23mmWorks with toggle wall switch We have all the accessories you need in the box, you don't need to pay extra cost. Please be noted the Tuya ZigBee Hub is not included in the box if you don't buy it. What's in the box? 2 Gang Wi-Fi Smart Module ScrewdriverDouble-sided tape4 Cables for WiringTermial for WiringUser Guide