Power Supply: 90V~250V AC Max. Current: 10A Wireless Standard: Wi-Fi 2.4GHz b/g/n Security Mechanism: WEP/WPA-PSK/WPA2-PSK Operating Temp.: -20°~70° Operating Humidity: 80% Material: RF-ABS Connector: universal Guidance: How to install this device, please do as follow Switch off electricity source Open the two covers at both ends Connect the two electricity source cables(Live and Neutral) to the 2 ports with IN mark, one cable for one port, and there's no limitation for which port to connect Connect the two appliance cables(Live and Neutral) to the 2 ports with OUT mark, one cable for one port, and there's no limitation for which port to connect Make the Cover Install Firmly Overview Home automation is "The Internet of Things".It simply means the way all devices or appliances are networked together to provide users with a seamless control over their home equipment. Sonoff is an affordable device that provides users with smart home control. It is a WiFi based wireless switch that can connect to a wide range of appliances . Sonoff transmits data to a cloud platform through the WiFi Router, which enables you to remotely control all the connected appliances, via the mobile application eWeLink. The server of Sonoff is Amazon AWS global server. Sonoff makes all home appliances smart. As long as the mobile has network, users can remotely control the appliances by turning them on off from anywhere at any time. Another feature available is to set timing schedules for the appliances, which can include countdown, scheduled on/off, and can thus, help users maintain an easy life. The mobile application eWeLink enables users to control the appliances easily. The iOS version of the application can be downloaded in App Store while the Android version in Google Play.