Sonoff S-MATE Extreme Switch Mate

Turn Any Existing Switch into a Smart Switch

The Sonoff S-MATE Extreme Switch Mate is an ultra-compact smart switch controller that works with your existing wall switches — no rewiring, no new switch plates. It connects to your current switch mechanism and adds WiFi smart control, making it the easiest way to retrofit smart switching into any room.

• Works with existing wall switches — no need to replace your switch plates
• Ultra-compact design — installs behind your existing switch in the wall box
• WiFi connected — remote control via the eWeLink app from anywhere
• Supports momentary, toggle, and interlock switch modes
• Set schedules, timers, and automations with ease
• Compatible with Amazon Alexa and Google Home voice control
• Works with Home Assistant via eWeLink integration
• Supports DIY mode for local API control

Smart control without changing a single switch plate — the S-MATE Extreme is the retrofit smart switch solution for any home.