Catalog > Internet of Things (IOT) Related Products > More Platforms Sonoff 4CH WiFi RF Smart Switch Sonoff 4CH WiFi RF Smart Switch SONOFF 4CH PRO WIFI SWITCH SONOFF 4CH PRO – DIN RAIL 4 GANG INCHING/SELF-LOCKING/INTERLOCK WIFI RF SMART SWITCH. 0.25-4SEC DELAY IN INCHING MODE Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview Sonoff 4CH Pro is a 4 gang WiFi switch. It supports switching among 3 working modes: interlock/self-locking/inching(0.25-4s adjustable) mode. It integrates with a 433MHz RF receiver module, making it possible for the switch to be controlled by RF Remote. The Sonoff 4CH Pro smart switch is DIN Rail mounted. Features Remote ON/OFF–Turn electrical devices on/off from anywhereApp Support –Free iOS and Android mobile App eWeLinkRF Remote control–Turn on/off by 433MHz RF Remote indoorsIndependent control–Control each gang separately3 Working Modes– Switch among interlock/self-locking/inching modesAdjustable Delay Time– Turn on devices for 0.25-4s in Inching modeDIN Rail Mounted– Great for industrial controlSync Status–Real-time device status provided to AppTiming–Set scheduled/countdown timers to turn on/off at specified timeShare Control– Control your smart home together with your familyScene–Turn on/off a gang of devices with one tapSmart Scene–Trigger on/off by temperature, humidity or other environmental conditionsNetwork Support –Control electrical devices over Wi-Fi or 2/3/4G mobile networkVoice Control –Works perfectly with Amazon Alexa, Google Home(Stay tuned) Specifications EWeLink Introduction Downloads Datasheet - Sonoff 4CH Pro PDF File 1.64 MB