Sonoff 4CH Pro R3 - Smart Wifi Switch

Product features:

    Remote ON / OFF – Anytime, anywhere, from now on you can turn all your appliances on and off remotely.
    Supports 4 channels – 4 relays in 1, controling 4 circuits with 1 device
    Momentary switching mode and auto-off is available (0,5 sec – 1 hour)
    Interlock mode is available to support AC and DC motor control
    NO / NC scenarios are both available
    Zero voltage / dry contact switch is also available
    Fits to DIN-rail
    Controling the 4 channels independently
    Physical on/off buttons
    Mobil App – free iOS és Android mobil App: eWeLink
    Sync status – Check actual relay status (turned ON or OFF) with the mobile App
    Timer – Various timer functions: single time, scheduled turn on/off, countdown/timer, loop.
    Share control – Control the device together with your family
    Scene – Turn ON / OFF a gang of devices with one tap
    Smart scene – Triggered ON/OFF by temp, hum or other environmental sensors
    Compatibility – Works perfectly with Amazon Alexa, Google Assistant, IFTTT and Google Nest

4CH Pro R3 version compared with 4CH Pro R2 previous version :

    The 433.92 MHz RF capability has been extended: new R3 relay version can be now paired with multiple (up to 4) RF remote controllers (R2 relay could only be paired with one remote controller)
    Momentary / Auto-off / Inching switch mode can be now set in the eWelink app (between 0,5-3600 sec), not with physical jumper settings like in R2 relay version (1-16 sec).
    Interlock / standard (self-lock) mode can also be set in the app, while in R2 relay version it was set by hardware jumper settings
    More stable cable fixing with screws
    Higher max. performance is provided in R3 relay version: 10A/2200W/gang, 40A/8800W/in total