Features: 
<br />100% brand new and high quality 
<br />Remote ON/OFF Turn electrical devices on/off from anywhere
<br />App Support  Free iOS and Android mobile App eWeLink
<br />Independent control Control each gang separately
<br />DIN Rail Mounted  Great for industrial control
<br />Sync Status Real-time device status provided to App
<br />Share Control Control your smart home together with your family
<br />Timing Set scheduled/countdown timers to turn on/off at specified time
<br />Scene Turn on/off a gang of devices with one tap
<br />Smart Scene Trigger on/off by temperature, humidity or other environmental conditions
<br />Network Support  Control electronic devices over Wi-Fi or 2/3/4G mobile network
<br />Voice Control  Works perfectly with Amazon Alexa, Google Home(Stay tuned)
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<br />Overciew 
<br />Sonoff 4CH is a 4-gang switch with din rail mounting. Sonoff 4CH 4 gang light switch supports to connect and control 4 electrical appliances, which can be turned on/off separately by the buttons or iOS/Android App EweLink. 
<br />Besides, with the multi gang switch, you can check real-time devices status for each device on App. Owning a Sonoff 4CH multi gang switch means you have 4 Sonoff basic WiFi switches integrate together. 
<br />The enclosure is din rail mount supported! A DIN rail is a metal rail of a standard type widely used for mounting circuit breakers and industrial control equipment inside equipment racks. These products are typically made from cold rolled carbon steel sheet with a zinc-plated or chromated bright surface finish.
<br />Sonoff 4CH 4 gang WiFi light switch belongs to Sonoff family, definitely, it bears all the functions basic Sonoff has. In EweLink, you can remote turn on/off from anywhere at any time, set single/repeat/countdown timing schedules to turn on/off at a specified time, share to others so that they can control together.
<br />Sonoff 4CH is hacker-friendly that you can flash your firmware without difficulty.
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<br />Works With Amazon Alexa
<br />You can ask Alexa to turn on/off Sonoff 4CH
<br />Standard voice control commands phrases for Sonoff 4CH  (if you just say the device name, Alexa will turn on/off all the 4 gangs immediately):
<br />Alexa, turn on {deviceName}
<br />Alexa, turn off {deviceName}
<br />Alexa, turn on {deviceName} {gangName}
<br />Alexa, turn off {deviceName} {gangName}
<br />The default names for the 4 gangs are: outlet 1, outlet 2, outlet 3, outlet 4. You can change the name if you like.
<br />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".
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<br />Speicification: 
<br />WiFi Standard: 2.4GHz b/g/n
<br />Input Voltage: 90-250V AC 
<br />Maxi. load: 220V  10A/gang 
<br />Max. total load: 220V  16A 
<br />Size:  as shonw 144mm x 90mm x 40mm (approx.)
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<br />Package Includes: 
<br />1 x 4-CH WiFi Switch 
<br />1 x User Manual