Feature: 1. *App Support: Free iOS and for Android mobile App eWeLink. 2. *Sync Status: Real-time device status provided to App. 3. *Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere. 4. *Independent control: Control each gang separately in APP eWeLink. 5. *Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time. 6. *DIN Rail Mounted: Great for industrial control. 7. *Voice Control: Compatible perfectly with Amazon Alexa, for Home, for Nest. 8. *Share Control: Control your smart home together with your family. Specification: Overview: Sonoff 4CH R3 ITEAD is a 4 channels universal WiFi wireless smart switch for your smart home system to remotely and automatically turn on/off home appliances and electronic devices by phone APP. It can connect and control four appliances on APP at the same time, and you can independently turn on/off each of the four gangs. It also supports timing turning on/off the appliances at a specified time, and share to others so that you can control your smart home together with your family. You can also voice control your home appliances by Amazon Alexa, and for Home/Nest, and enjoy intelligent life and make your home smarter. Features: *App Support: Free iOS and for Android mobile App eWeLink. *Sync Status: Real-time device status provided to App. *Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere. *Independent control: Control each gang separately in APP eWeLink. *Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time. *DIN Rail Mounted: Great for industrial control. *Voice Control: Compatible perfectly with Amazon Alexa, for Home, for Nest. *Share Control: Control your smart home together with your family. Specifications: Power Supply: 90V~250V AC Max. Current: 10A/gang, 16A/Total Max. Power: 2200W/gang, 3500W/Total Operating Temperature(recommended): 0ºC-40ºC Operating Humidity: 5%-90%RH, Non-condensing Transmission mode: Wi-Fi communication Wireless Standard: 802.11 b/g/n Security Mechanism: WPA-PSK/WPA2-PSK Enclosure Material: Fire-retardant ABS V0 Gang: 4 Product Size: 145*90*34 (mm) Package Information: Package Size: Approx. 14.8*9.5*4.5cm/5.83*3.74*1.77in Package Weight: Approx. 233g/8.22oz Packing List: 1 * Sonoff 4CH R3 ITEAD 1 * User Manual Package List: 1 * Sonoff 4CH R3 ITEAD 1 * User Manual