Verified compatibility
We test every device for these ecosystems. For non-standard integrations contact us before ordering.
- Home Assistant
- Zigbee
- Matter
- KNX
- Wi-Fi

The Shelly BLU Wall Switch 4 is a wireless four-button switch that runs over Bluetooth from a CR2032 battery and needs no cabling. This kit already includes the adapter for Gira and Merten frames, so the switch drops into an existing 55x55 mm frame and blends into the room instead of standing out as a foreign block on the wall.<br><br>Each of the four buttons recognises single, double, triple and long press — up to 16 different scenarios on one panel: lights, blinds, appliances or a night mode. Actions are configured in the Shelly Smart Control app and commands are sent to Shelly devices over Bluetooth. The ivory housing measures 46x46x13 mm and the battery lasts roughly 2 years.
CasaSmart essentials
We test every device for these ecosystems. For non-standard integrations contact us before ordering.
What you need on your side and what we deliver.
Three typical automations we set up after the install.
A battery-powered wireless point adds light and blind control where there is no switch cable.
The Gira/Merten adapter fits the wireless switch into an already installed 55x55 mm frame.
A long press triggers a scene that turns off all lights and dims accent lighting.
Same ecosystem
Devices that run in the same smart-home ecosystem.

Shelly
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Shelly
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Shelly
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Shelly
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Same category
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Manager guidance
A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.
+373 60 944 922