Shelly SHELLY_B_WS_4 Light Switch

The Shelly BLU Wall Switch 4 is a compact, battery-powered Bluetooth smart switch designed for standalone placement. This ivory plastic switch (46 × 46 × 13 mm) runs on a CR2032 (3V) battery and is supplied pre-assembled for use without wall mounting. The package includes a 3M adhesive patch for easy placement anywhere in the home and the switch supports up to 16 distinct actions via multi-click combinations.

Advantages

The Shelly BLU Wall Switch 4 offers quick Bluetooth response, extended battery life of up to 2 years under typical use, and a compact form factor that does not require a wall frame. It supports multi-click action triggering for flexible control of lights, appliances, and scenes, and is compatible with common wall frame brands if a mounted adapter is used.

Suitable for

• Wireless control of lighting in rooms where wiring or mounting is impractical
• Portable switch for temporary or rental properties
• Triggering scenes and smart home actions via Bluetooth
• Replacement of standard switches when used with compatible adapter frames

Key specifications

• Model: Shelly BLU Wall Switch 4 (Shelly_B_WS_4)
• Dimensions: 46 × 46 × 13 mm
• Material: durable plastic, ivory color
• Power source: CR2032 battery (3V)
• Connectivity: Bluetooth
• Actions: up to 16 programmable multi-click actions
• Mounting: standalone (pre-assembled) with 3M adhesive; adapter available for wall frame mounting

How to use

Peel the protective film from the included 3M adhesive patch and attach the switch to a clean, dry surface. Insert a CR2032 battery if not pre-installed, then power the device. Use the Shelly mobile app or Bluetooth pairing procedure to add the switch to your device list, configure click combinations and assign actions or scenes. If you prefer permanent installation, fit the appropriate adapter and mount the switch into a compatible wall frame following the adapter instructions.

Recommendations

Place the switch on a smooth, non-porous surface for the best adhesive hold. Replace the CR2032 battery promptly when battery warnings appear in the app to maintain reliable operation. For mounted use, ensure the adapter matches the wall frame brand before installation.