Product description: Sonoff S-MATE - smart WiFi switch - Android / iOS application
Sonoff S-MATE is a module that mounts in a box behind a standard wall switch, allowing you to remotely control your lights or other electrical devices via the eWeLink app . When paired with the MINI R3 switch (sold separately), it allows you to control your devices locally even when your WiFi network is down. Compatible with single-, double-, and triple-key switches, it offers flexibility in setup and use.
Special features of the switch
- No Neutral Wire Required - CR2032 battery-powered module operates without the need for a neutral wire connection, making it an ideal choice for retrofitting older electrical installations
- Simple installation - thanks to its small dimensions, the device can be easily mounted in a standard electrical box behind a traditional wall switch
- Broad switch compatibility - supports single, double and triple key switches, allowing flexible control of various circuits
- Wide range - guarantees reliable communication with other devices within a radius of up to 50 m, making it an excellent solution for home installations
eWeLink App
Sonoff S-MATE integrates seamlessly with the eWeLink app, which acts as a comprehensive device management center. After a quick and simple setup process, the user gains full control over the module from their smartphone. The app allows you to remotely control lighting and other connected devices, as well as create work schedules and automation scenarios. The app allows you to easily adjust settings and manage devices from anywhere in the world, as long as there is an Internet connection. With these features, Sonoff S-MATE offers convenience and modern lighting control options in a smart home.

Sonoff S-MATE Technical Specification
- Model: S-MATE
- Power supply: 1 x CR2032 battery (3V)
- Housing material: PC V0 (fireproof)
- Input voltage: 100V to 240V ~ 50/60Hz, 16A max.
- Output voltage: 100V to 240V ~ 50/60Hz, 16A max.
- Operating temperature: -10°C to 40°C
- Operating humidity: 5% to 95% RH (non-condensing)
- Communication range: up to 50 m
- Compatibility: Single, double and triple key switches
- Dimensions: 54 x 45 x 24 mm
Kit Contents
- Sonoff S-MATE
- CR2032 battery
- User manual