Product Review

Sonoff 4CH Pro is a 4 gang WiFi switch. Users can remotely turn on/off the connected lights/appliances by iOS/Android App eWeLink or 433MHz RF Remote. They can create 8 enabled single/repeat/countdown timers to automatically turn on/off at the specified time.The timers can run themselves even network is unavailable. To let the devices be controlled by their family, they can simply share the devices to them and give specified timers permissions. They can even create some scenes or smart scenes to trigger ON/OFF the switch.

3 Working modes:In self-locking mode, users can turn on/off the 4 connected devices instantly and separately. In interlock mode, users can turn on 1 device every time, and turn off other devices at the same time. In inching mode, users can turn on connected devices for 0.25-4s(the time is adjustable).Users can set some devices in inching mode, while the others in interlock mode.Now the Sonoff 4CH Pro can perfectly Compatible with Alexa. Just ask Alexa to turn on/off Sonoff 4CH Pro. Please note that only US/UK English and German voice commands are supported now.
The default names for the 4 gangs are: outlet 1, outlet 2, outlet 3, outlet 4. You can change the name if you like.
Standard voice control commands phrases for Sonoff 4CH and Sonoff 4CH Pro:
Alexa, turn on {deviceName} {gangName}
Alexa, turn off {deviceName} {gangName}

Explanation: if the device name of your Sonoff 4CH is "My Switch", the gang name is "Outlet 1", then you can control with "Alexa, turn on My Switch Outlet 1".

Specification

Voltage range: 90-250v AC(50/60Hz) / 5-24v DC
Max current: 10A/gang
Max Power: 2200W/gang
Wireless Frequency: WiFi 2.4Ghz
Operating Temperature(recommended): 0ºC-40ºC(32°F-104°F)
Operating Humidity: 5%-90%RH, Non-condensing

Package
Sonoff 4CH Pro*1
Note: the RF Remote is not included, please order separately
Manual: http://ewelink.coolkit.cc/?p=458