Power : 90-250V AC Max. actual : 10A Wireless : Wi-Fi 2.4 GHz b/g/n Security Mechanism : WEP/WPA-PSK/WPA2-PSK Operating Temp : -20 degree ~ 70degree Material : RF-ABS Connector : cosmopolitan Functions : distant ON/OFF : Turn physical phenomenon devices on/off from anywhere App Support : Free IOS and humanoid ambulant App eWelink Sync Status : actual time device status provided to App Timing : Set scheduled/countdown timers to turn on/off at specified time Share Control : Control your sharp home together with your family Scene : Turn on/off a gang of devices one tap sharp Scene : Trigger on/off by temperature, humidity or another biology conditions Network Support : Control physical phenomenon devices over Wi-Fi or 2/3/4G ambulant network Voice Control : Works perfectly with Amazon Alexa How to install this device, please do as follow : 1. off electricity source 2. the covers at both ends 3. the two electricity source cables -LRB- untaped and Neutral -RRB- to the ports with `` IN '' mark, one cable for one port, and there 's no limitation for which port to connect 4. the two appliances cables -LRB- untaped and Neutral -RRB- to the two ports with `` OUT '' mark, one cable for one port, and there 's no limitation for which port to connect make the cover install firmly Welcome to visit the below link get more details of how to use it, please find `` SONOFF -LRB- RF -RRB- USER GUIDE '' : http://ewelink.coolkit.cc/?p=126 Package Included Sonoff x 6 Screw x 24 .