Overview: This smart switch is a universal switch for your smart home system to remotely and automatically turn on/off connected electric appliances by phone APP. It supports preset repeat/single/countdown timing to turn on/off the appliances and supports loop timing, which allows users to turn on/off a device at preset intervals and run for a specified period of time, and its more energy saving and convenient. Say goodbye to running your devices day and night and save your energy. You can easily turn on/off your devices in advance or delay at anywhere and anytime as you need. What's more, you can control your device with your tablet or smart phone via APP Tuya or voice control compatible with Amazon Alexa and for Google Home, so that you can make your home smarter. Specifications: Input voltage: AC85-250V Output current: Max. 20A Max. Power: 4000W Wireless Standard: WIFI 2.4G 802.11b/g/n #43; BT Radio frequency: 433MHz APP Support: For Android IOS APP Name: Tuya Material: PC #43;ABS Connector: Universal Item Size: Approx. 10.5*58*35mm Package Size: Approx. 10.5 * 7 * 5cm / 4.1 * 2.8 * 2in Package Weight: Approx. 120g/4.2oz Package List: 1* Smart Switch 1* User Manual