The SONOFF BASIC R4 Smart Switch is a compact Wi-Fi relay designed to turn ordinary appliances and lighting circuits into smart ones. Featuring upgraded performance, flexible trigger modes, and advanced eWeLink support, it allows remote control, scheduling, and automation—no hub required.
Example use
Install the BASIC R4 inline with a lighting circuit to control it remotely, schedule automatic on/off times, or integrate it into smart scenes triggered by sensors or schedules.
Key features
Power rating: Up to 10A / 2200W (220–240V AC)
Connectivity: Wi-Fi 2.4 GHz (IEEE 802.11 b/g/n)
App control: eWeLink app for remote ON/OFF control, timers, and scenes
Voice control: Compatible with Amazon Alexa and Google Assistant
Trigger modes: Supports pulse, inching, edge, and follow modes for flexible control
Smart scenes: Link with other SONOFF devices and sensors for automation
Design: Compact in-line module suitable for junction boxes or enclosures
Safety: Flame-retardant PC housing with overload protection
Use cases: Lighting circuits, fans, pumps, heaters, and general appliance automation
