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New device for makers who want to build their own smart home system. Sonoff is a universal switch for your smart home system to remotely turn on / off appliances.Sonoff Dual is a 2-channel WiFi based wireless smart switch that can connect and control two home appliances independently.Turn devices on/off, check status, create schedules and set timers by using the app eWelink.Now the APP eWeLink is available on both iOS and Android, you can independently turn on/off each of the two connected devices.you can set single/repeat/countdown timing schedules to turn on/off the two devices at a specified time, and also share the control of devices to others so that they can control together.Our mission is unremitting exploration, ITead Studio is mining the customer's demand constantly by the spirit of forge ahead to improve the people's life. We pays attention to every part of products and pursue excellence from design to user manual. SpecificationVoltage range: 90-250v ACMax current: 16A(2 devices),10A(1 device)Max Wattage: 3500W(2 device)/ 2200W(1 device)Enclosure Dimensions: 114*52*32mmColor: WhiteHumidity: 5%-95%RH, Non-condensingFrequency: 2.4GhzOperating Temperature: 0ºC-40ºC(32°F-104°F)Package1*Sonoff Dual with CaseUser Manual for Sonoff wifi Wireless Switch:http://ewelink.coolkit.cc/?p=147ESP8266 Datasheet:http://dl.itead.cc/IM151116002/0A-ESP8266_Specifications_v4.1.pdf