Remote ON/OFF–Turn electrical devices on/off from anywhere App Support –Free iOS and Android mobile App eWeLink Independent control–Control each gang separately DIN Rail Mounted– Great for industrial control Sync Status–Real-time device status provided to App Share Control–Control your smart home together with your family Timing–Set scheduled/countdown timers to turn on/off at specified time Scene–Turn on/off a gang of devices with one tap Smart Scene–Triggered on/off by temperature, humidity or other environmental conditions Voice Control –Works perfectly with Amazon Alexa, Google Home 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. 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. 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. 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.Warranty & Free Technical support is for SONOFF OFFICIAL Store Buyers only