The Shelly BLU RC Button 4 ZB is a compact, battery-powered, wireless smart button that offers fast and flexible control for Shelly-compatible smart home devices via Zigbee and Bluetooth Low Energy connections. Equipped with four separate buttons, each capable of handling multiple event types (single press, double press, long press), this device is perfect for triggering lights, scenes, automations, or custom functions.
One of its key advantages is its completely wireless operation. It runs on a CR2032 coin cell battery, which can last up to 2 years. Its compact design and included magnetic holder allow easy mounting on walls, wall switch boxes, or flat surfaces.
The Shelly BLU RC Button 4 ZB is ideal for users of Zigbee-based smart home systems who need a quick, reliable, and low-power physical controller. Bluetooth LE simplifies the initial pairing and configuration, while Zigbee ensures stable and energy-efficient daily operation.
About the Shelly brand
Shelly is one of the most recognized smart home brands in Europe, known for its Wi‑Fi, Bluetooth, Zigbee, and Z‑Wave-based relays, sensors, and controllers. Shelly products are praised for their support of local control, open integration options, and wide compatibility with both open-source and commercial smart home platforms.
Key Product Features
- Four-button layout – for quick access to multiple functions and scenes.
- Zigbee and Bluetooth LE connectivity – stable communication and easy pairing.
- Battery-operated – no wiring or external power supply needed.
- Magnetic mounting – easily attaches to walls, switch boxes, or flat surfaces.
- Long battery life – up to 2 years on a single CR2032 battery.
- Compact size – discreet design that fits any room.
Smart Home Protocols & Platform Compatibility
- Smart home protocols – Zigbee (IEEE 802.15.4), Bluetooth Low Energy.
- Local remote control – via Zigbee network with a hub.
- Factory compatibility – works with Shelly Plus, Gen3, Gen4, and Shelly Pro series devices.
- Security – supports encrypted communication.
Smart Features
- Control lights and relays with one or more button presses.
- Trigger scenes and automations.
- Multiple event types per button (single, double, long press – system dependent).
- Fast response time with low power consumption.
- Local operation via hub, with optional cloud-free control.
Technical Specifications
- Button dimensions: 65 × 30 × 13 mm
- Magnetic holder (wall box mount): 105 × 44 × 13 mm
- Magnetic holder (flat surface mount): 83 × 44 × 9 mm
- Weight: 21 g
- Casing material: plastic
- Casing color: white
- Operating temperature: -20 °C to +40 °C
- Humidity: 30% – 70% RH
- Power supply: 1 × 3V battery (CR2032, included)
- Battery life: up to 2 years
- Bluetooth: Bluetooth 5 (LE), 2402–2480 MHz, max RF output < 8 dBm
- Indoor range: ~10 m
- Outdoor range: ~30 m
- Zigbee: IEEE 802.15.4, 2405–2480 MHz, max RF output < 8 dBm
- Indoor range: ~10 m
- Outdoor range: ~30 m
- Processor: EFR32MG27
- Flash memory: 768 kB
- Schedules: not supported
- Webhooks: not supported
- Scripting: not supported
- MQTT: not supported
- Encryption: supported
- Supported devices: Shelly Plus / Gen3 / Gen4 series, Shelly Pro series
