SONOFF 4CHPROR3 - 4-channel smart switch, White

The SONOFF 4CHPROR3 4-Channel Wi-Fi Smart Switch with RF Control is a four-channel smart switch for remote on/off control of lighting and other electrical or motorised loads. It connects over 2.4 GHz Wi-Fi and also supports 433 MHz RF control. Operation is available through a mobile app, compatible RF controls, physical buttons, and voice commands via Amazon Alexa or Google Assistant. The switch controls on/off states rather than brightness, so it does not provide dimming. Its maximum AC load rating is 8,800 W, with a maximum switching voltage of 240 V AC.

The flame-retardant PC housing is designed for indoor DIN-rail mounting in a fixed electrical installation. Its power input supports 100–240 V AC or 9–23 V DC. The switch is intended for controlling lights, appliances, pumps, gates, curtains, blinds, and other motorised equipment. Smart home integration includes SmartThings and Home Assistant, as well as Apple Home through a Matter Bridge. One switch is included in the pack.

• 40 A maximum current, the specified upper current limit for the switch.
• Self-locking, interlock, and inching modes provide different output behaviours for switching and motor control.
• Weekly scheduling supports timed operation.
• Dry-contact mode supports control applications that require a contact output.
• Four physical channel buttons provide local control at the module.
• WPA and WPA2 security algorithms are supported for Wi-Fi connections.