Shelly - Zigbee/Bluetooth IP54 Mocha temperature and humidity sensor Shelly BLU H&T ZB

Shelly BLU H&T ZB - Zigbee & Bluetooth Temperature and Humidity Sensor

The Shelly BLU H&T ZB is a smart temperature and humidity sensor offering dual Bluetooth and Zigbee connectivity in a compact, durable format. With its IP54 rating, it's splash and dust resistant, making it ideal for reliable climate monitoring in any room. Designed for smart home automation, it helps optimise heating, cooling and ventilation based on precise environmental data.

Main Functions

• Measures and reports ambient temperature and relative humidity
• Sends threshold-based alerts to prevent humidity-related issues like mould or frozen pipes
• Triggers smart actions such as heating, ventilation, or air conditioning
• Supports Bluetooth pairing and Zigbee pairing via button interactions
• Secure encrypted connections for data protection
• “Button press” event support for manual triggers and diagnostics

Specifications - Shelly BLU H&T ZB (SBHT-203C)

• Connectivity: Zigbee 3.0 (802.15.4) & Bluetooth 5.0 LE
• Bluetooth Range: up to 10 m indoors / 30 m outdoors
• Zigbee Range: up to 10 m indoors / 30 m outdoors
• Temperature range: -20°C to +60°C
• Humidity range: 0% to 100% RH
• Protection rating: IP54 (splash and dust resistant)
• Battery: 1 × CR2032 (included) – lifespan up to 3 years
• Microcontroller: EFR32MG27 with 768 kB flash
• Dimensions: 37 × 37 × 10 mm
• Weight: 13 g
• Interface: 1 push button, 1 red LED indicator

Use Cases

• Automate heating or AC based on real-time temperature
• Trigger ventilation when humidity exceeds safe levels
• Prevent mould and pipe freezing through timely alerts
• Integrate into smart home platforms via Zigbee (Home Assistant, Zigbee2MQTT, etc.)

With its compact design, long battery life, and dual-protocol connectivity, the Shelly BLU H&T ZB is a reliable sensor for smart climate management at home or work.