Is the Busch-Jaeger frame included in the bundle?

No. The bundle contains the Shelly BLU Wall Switch 4 button and the Busch-Jaeger adapter; the Busch-Jaeger frame itself must already be on the wall.

How many actions can I program on this switch?

Each of the 4 buttons recognises single, double, triple and long press, so you get up to 16 distinct actions.

How is it powered and how long does the battery last?

It is powered by a 3 V CR2032 battery, included in the box, with up to 2 years of life.

What protocol does it use and which systems does it work with?

It communicates over Bluetooth Low Energy 4.2 and can be integrated into Home Assistant via the BTHome protocol.

Do I need to run wires or call an electrician?

No wiring or wall box is required; the button is glued or clipped on and can be relocated at any time.

What are the dimensions and the range?

The button measures 46 x 46 x 13 mm and weighs 17 g; range reaches about 30 m outdoors and 10 m indoors.

Shelly BLU Wall Switch 4 Busch-Jaeger

Name: Shelly BLU Wall Switch 4 with Busch-Jaeger Adapter
Brand: Shelly
SKU: SHELLY-BLU-WALL-SWITCH-4-BUSCH-JAEGER

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SHELLY-BLU-WALL-SWITCH-4-BUSCH-JAEGER - main

Compatibility

Works with these ecosystems

Protocols

Ecosystems

Home Assistant
eWeLink

What it is, who it's for, what it does

About this product

Shelly BLU Wall Switch 4 is a smart 4-button interface that talks over Bluetooth Low Energy and needs no wiring and no wall box. This bundle adds the official Shelly adapter for Busch-Jaeger frames, so the switch drops neatly into the Busch-Jaeger frame you already have on the wall.<br><br>Each of the 4 buttons recognises single, double, triple and long press, giving you 16 programmable actions for lights, scenes and automations. Powered by a replaceable CR2032 battery (included), the device runs up to 2 years, secures its link with AES encryption, and can be mounted in a frame or carried around as a mobile remote.<br><br>Note: the box contains the switch and the Busch-Jaeger adapter, but not the Busch-Jaeger frame itself.

Delivery
Free from 1500 MDL
Returns
30 days to return
Warranty
24 months

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CasaSmart essentials

What it works with, what it needs, what you can do

Verified compatibility

We test every device for these ecosystems. For non-standard integrations contact us before ordering.

Home Assistant
Zigbee
Matter
KNX
Wi-Fi

Install & requirements

What you need on your side and what we deliver.

Zigbee hub or Matter gateway for wireless variants
65 mm back-box or DIN panel for wired variants
Local setup on Home Assistant — included in install

Request install quote

Smart scenarios

Three typical automations we set up after the install.

01Morning: warm light + blinds up + climate at 22 °C
02Leaving: lights off, arm sensors, close the gas
03Evening: warm ambient + cinema scene

Where it works

Use cases

Chisinau apartment with Busch-Jaeger fittings already on the wall

Replace the classic rocker with the BLU button using the Busch-Jaeger adapter, keeping your existing frame.

Living room where one button turns everything off, another starts an evening scene

4 buttons with single, double, triple and long press trigger up to 16 lighting and scene actions.

Bedroom where light is controlled without leaving the bed

With no wiring, the button can be moved to a nightstand or table as a BLE remote.

Analytics

See consumption — save on bills

Real-time consumption tracking via the eWeLink app. Daily, weekly and monthly history helps identify the most energy-hungry devices.

For the installer

Technical specifications

full spec · wiring · datasheet

Physical

Buttons: 4
Dimensions: 46 x 46 x 13 mm
Weight: 17 g
Frame adapter: Busch-Jaeger (frame not included)

Wireless

Protocol: Bluetooth Low Energy (BLE)
Bluetooth version: 4.2
Range outdoors: 30 m
Range indoors: 10 m
RF power: < 4 dBm

Power

Battery: CR2032 3 V (included)
Battery life: up to 2 years

Other

Actions: 16 (single/double/triple/long per button)
Model: SBBT-004CEU

Connectivity

Encryption: AES (CCM)

Environment

Operating temperature: -20 to 40 °C
Humidity: 30 to 70 % RH

Full device datasheet

Support

Frequently asked questions

Is the Busch-Jaeger frame included in the bundle?
No. The bundle contains the Shelly BLU Wall Switch 4 button and the Busch-Jaeger adapter; the Busch-Jaeger frame itself must already be on the wall.
How many actions can I program on this switch?
Each of the 4 buttons recognises single, double, triple and long press, so you get up to 16 distinct actions.
How is it powered and how long does the battery last?
It is powered by a 3 V CR2032 battery, included in the box, with up to 2 years of life.
What protocol does it use and which systems does it work with?
It communicates over Bluetooth Low Energy 4.2 and can be integrated into Home Assistant via the BTHome protocol.
Do I need to run wires or call an electrician?
No wiring or wall box is required; the button is glued or clipped on and can be relocated at any time.
What are the dimensions and the range?
The button measures 46 x 46 x 13 mm and weighs 17 g; range reaches about 30 m outdoors and 10 m indoors.

Same category

Questions about this product?

A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.

+373 76 004 003

Updated: 18 June 2026· reviewed by CasaSmart Expert Team

Compatibility