Open box Smart switch Sonoff S-Mate2, 3 channels

What does "open box" mean?

Open-box products are returned products with opened or damaged packaging, but fully checked from a technical point of view and completely functional. They come with the same warranty as new products.

Sonoff S-MATE2 smart switch, 3 channels, eWeLink-Remote compatible

Sonoff S-MATE2 is a smart module with 3 control channels, designed to add smart functionality to conventional switches without changing the existing wiring. It works via eWeLink-Remote technology, allowing control of other compatible Sonoff devices without a WiFi connection or additional wires.

Turn conventional switches into smart controls

Mount S-MATE2 in the wall box, behind the traditional switch, and pair it wirelessly with a compatible Sonoff relay (e.g. Mini R4, Basic R4, Dual R3, etc.) – this way, the classic switch will be able to remotely control a smart device via the eWeLink-Remote wireless signal.

Control via eWeLink-Remote

• Uses the eWeLink-Remote protocol (not WiFi!)

• Allows control without internet or a router

• Can control up to 8 compatible devices

• Range: up to 50 metres indoors

Easy installation, no major modifications

• No neutral wire required – perfect for conventional installations

• Powered by a CR2477 battery (included)

• Battery life: up to 5 years

Recommended applications

• Wireless control for Sonoff smart relays

• Ideal solution for renovations or spaces where you have no access to a neutral wire

• Perfect for multiple controls (e.g. 3 switches in a single wall box)

Note:

S-MATE2 does not directly control bulbs or electrical appliances. It sends a signal to other compatible Sonoff devices, which switch the connected load.

Practical use cases

• Mounted in the wall box behind a classic 3-gang switch, it lets each rocker wirelessly control a compatible Sonoff relay (e.g. Mini R4), with no new cables and no neutral wire.
• Used in renovations, for control from multiple points (e.g. top and bottom of the stairs) without running new wires through the wall.
• It keeps the existing switches (rocker, momentary or toggle) and turns them into controls for smart devices that work locally, without internet or a router.

Technical specifications:

Control any space smartly, without cables or internet, with Sonoff S-MATE2 – the perfect wireless solution for conventional switches!