Sonoff Switch Mate Update price in bangladesh

Key Features

eWeLink?Remote” wireless control– When paired with a compatible gateway device (such as the Sonoff?MINI?R3/R4, M5 wall switch, NSPanel?Pro or DUALR3), the S?Mate sends a local wireless signal which allows immediate control of that gateway and connected devices — even *without* WiFi. ([shop.sonoff.in][1])

Retain your existing switch – The module sits behind your normal wall switch. Your switch becomes a wireless Smart trigger instead of a plain mechanical one. It supports pulse, rocker or toggle types. ([sonoff.in][2])

No neutral required – Because it’s battery?powered and doesn’t need to drive a load directly, it does *not* require a neutral wire at the switch box. Ideal for older homes or retrofit scenarios. ([shop.sonoff.in][1])

Small form?factor – The S?Mate/S?Mate2 is compact so it can fit behind the wall switch in many standard installations.

Long battery life – Particularly the S?Mate2 variant is optimised for ultra?low power and uses a CR2477 (or similar) button?cell battery for years of use. ([SONOFF][3])

* Versatile scene?triggering** – Beyond simply toggling a light, you can use the switch to trigger automations or smart scenes: e.g., a single click triggers one device, a double?click triggers another, long?press for yet another. ([Revel Smart][4])

 Why It’s a Good Choice

Minimal rewiring – Since it doesn’t require a neutral, and you can keep your existing switch hardware, the S?Mate is ideal for retrofitting smart control into homes without major rewiring.

Smart layering – It effectively “upgrades” your standard switch into a smart trigger that integrates with the rest of your ecosystem. Great for scenarios where you want both manual and smart control.

Reliable local control – Because the signal is local (eWeLink?Remote) and not fully reliant on WiFi/cloud, you get less latency and more reliability—especially useful for physical switches.

Flexible automations – Use your existing switch physically *and* trigger other smart devices and scenes with the same action. This duality is powerful in mixed?home setups.

 Considerations & Tips

Not a substitute for a relay/switch module – The S?Mate itself *does not* switch mains power directly. It acts as a trigger for a compatible gateway module (e.g., a Sonoff relay) that handles the load. Make sure your installation includes that or is suitable.

Check compatibility – The S?Mate needs a compatible “eWeLink?Remote gateway” device (e.g., Sonoff?MINIR4, DUALR3, etc.). Single?use without a gateway won’t fully realise its capabilities. ([alfaluminar.com][5])

Battery maintenance – Although long?lasting, the battery will eventually need replacement. Choose a variant (S?Mate2) that emphasises longer life if you prefer minimal maintenance.

Wiring & mounting space – Ensure there is enough room behind the switch plate or in the box to accommodate the module. While compact, make sure the depth and wiring work for your wall box.

Scene logic complexity – If you plan two?way multi?switch setups (e.g., stairways), the logic can become more complex and may require additional modules or wiring tweaks. Several community users report that setting up multi?way circuits with S?Mate and Sonoff modules requires careful planning. ([Reddit][6])

 Typical Use Cases

* Upgrade a standard single?gang light switch (manual) to also trigger a smart scene in your home automation system while preserving physical control.

* Install behind a switch in a location without neutral (older wiring) so you can still add smart control.

* Use multiple S?Mate triggers in different locations to control one central relay/gateway, enabling multi?point control of lights or devices.

* Use a wall switch as a “scene button” – e.g., press once to turn on multiple lights/fans, press twice to run an automation, long?press to switch modes.

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