The Shelly BLU RC Button 4 ZB is a compact, battery-operated, wireless smart button that provides fast and flexible control for Shelly-compatible smart home devices via Zigbee and Bluetooth Low Energy connections. It has four separate buttons that can be assigned multiple events (single, double, long press), making it ideal for triggering lighting, scenes, automations or unique functions.

One of the biggest advantages of the device is its completely wireless operation: it uses a CR2032 button battery, which can provide up to 2 years of operation. The small size and the included magnetic holder allow it to be easily attached to a wall, wall switch box or even a flat surface.

Shelly BLU RC Button 4 ZB is primarily recommended for users who use a Zigbee-based smart home system and are looking for a fast, reliable, low-power physical controller. The Bluetooth LE connection makes initial pairing and configuration simple, while Zigbee ensures stable, energy-saving operation in everyday life.

Main product features

- Four-button design for quick access to multiple functions and scenes.
- Zigbee and Bluetooth LE connection stable communication and easy pairing.
- Works on batteries, no wiring or mains power required.
- Magnetic attachment can be mounted on a wall, wall box or flat surface.
- Long operating time up to 2 years with a single CR2032 battery.
- Compact size, discreet appearance in any room.

Smart home protocols and platform compatibility

- Smart home protocols Zigbee (IEEE 802.15.4), Bluetooth Low Energy.
- Local remote control via Zigbee network, using a hub.
- Factory compatibility with Shelly Plus, Gen3, Gen4 and Shelly Pro series devices.
- Support for security encrypted communication.

Smart functions

- Control lights and relays with one or more button presses.
- Starting scenes and automations.
- Multiple event types for one button (single, double, long press system-dependent).
- Fast reaction time with low consumption.
- Local operation through a hub, with the option of cloud-independent control.

Technical specifications

- Size (button) 65 × 30 × 13 mm
- Size (magnetic holder, for wall box) 105 × 44 × 13 mm
- Size (magnetic holder, for flat surface) 83 × 44 × 9 mm
- Weight 21 g
- Cover material is plastic
- Cover color is white
- Operating temperature -20 °C +40 °C
- Humidity 30% 70% RH
- Power supply 1 × 3 V battery (CR2032, included)
- Battery life up to 2 years
- Bluetooth Bluetooth 5 (LE), 2402-2480 MHz, max. RF power < 8 dBm, range indoors: ~10 m, outdoors: ~30 m
- Zigbee IEEE 802.15.4, 2405-2480 MHz, max. RF power < 8 dBm, range indoors: ~10 m, outdoors: ~30 m
- Processor EFR32MG27
- Flash memory 768 kB
- Schedules are not supported
- Webhooks are not supported
- Scripting is not supported
- MQTT is not supported
- Encryption yes
- Supported devices Shelly Plus / Gen3 / Gen4 series, Shelly Pro series