Shelly BLU Wall Switch 4 — 4-Button BLU Switch with Legrand Adapter

The Shelly BLU Wall Switch 4 is a wireless 4-button smart switch with Bluetooth BLE 4.2 connectivity. It includes an adapter for Legrand (Niloe) frames. No wiring, no construction: it runs on a CR2032 battery and pairs with any compatible Shelly device as a BLU gateway. Up to 16 different actions across its 4 buttons.

Key Features

• 4 independent buttons with up to 16 total actions (single, double, triple, long press)
• Wireless installation: CR2032 battery, up to 2 years of battery life
• Legrand (Niloe) adapter included for integration into existing installations
• Also compatible with Shelly, Gira, Merten, and Busch-Jaeger frames
• AES-128 encryption for maximum BLE security
• Compatible with Home Assistant via BTHome (local control)

Use Cases

• Add smart control without breaking walls
• Replace switches in existing Legrand installations
• Control lighting, blinds, or ambiance scenes
• Home Assistant automations without wiring

Integrations: Home Assistant (BTHome), Amazon Alexa, Google Home, Shelly App, MQTT, HTTP REST API.

• RF Band: 2400 - 2483.5 MHz
• Max RF Power: <4 dBm
• Bluetooth Protocol: BLE 4.2
• Bluetooth Range: Up to 10 m indoor / 30 m outdoor
• Encryption: AES-128
• Requires BLU gateway: Shelly Plus/Pro/Gen3/Gen4

Official knowledge base

• Shelly BLU Wall Switch 4 — Official Knowledge Base

Printed user manual

• Multilingual user and safety guide (PDF)

Certifications and regulatory compliance

• CE, RoHS — European regulatory compliance