Shelly BLU HT ZB Ivory Zigbee Bluetooth Temperature and Humidity Sensor

The Shelly BLU HT ZB Ivory is a compact, battery-operated wireless sensor for measuring room temperature and humidity. The water and dust-resistant housing in a cream-colored ivory look blends unobtrusively into living, sleeping, or work spaces. Using two radio standards in parallel, Zigbee 3.0 and Bluetooth 5, the sensor can be integrated directly into a Zigbee network as well as via a Shelly BLE gateway. This allows integration into the Shelly Smart Control app, Home Assistant, Zigbee2MQTT, ZHA, and via Shelly hubs into Matter setups. The measured values are transmitted to the gateway either upon change or periodically, enabling secure implementation of automations such as heating, ventilation, or dehumidifier controls. The power supply is provided by a standard CR2032 button cell, which is factory-installed. The energy-saving wireless design ensures a long battery life, reducing the need for frequent replacement. A thin profile allows for wall or furniture mounting with a sticky pad, without the sensor appearing obtrusive. As the device is splash water and dust resistant, it is also suitable for bathrooms, basements, storage rooms, or protected outdoor areas. The app allows you to set threshold values for temperature and humidity, which can trigger push notifications or webhooks when exceeded. This means the BLU HT ZB covers a wide range of applications from comfort to protective measures such as mold prevention.

Recommended Accessories:

• Shelly BLU Gateway USB Dongle or Shelly with BLU Gateway Function (from GEN3)

Features:

• Combination of Zigbee 3.0 and Bluetooth 5 allows operation in both radio networks in parallel
• Measurement of temperature and relative humidity covers two key figures for room comfort and mold protection
• Water and dust-resistant housing allows use in bathrooms, basements, or protected outdoor areas
• Battery operation via CR2032 allows tool-free installation in any location
• Integration into Shelly Smart Control, Home Assistant, Zigbee2MQTT, and ZHA makes the sensor open to many platforms
• Ivory-colored, flat housing blends unobtrusively into living environments

Application Examples:

• Control of heating in individual rooms depending on actual temperature and setpoint value
• Mold early warning in bathrooms or basements with persistently high humidity
• Comfort monitoring in the bedroom with night-time ventilation automation
• Temperature monitoring for wine cellars, pantries, or greenhouses with threshold alarms
• Server or technical room monitoring with push notification in case of critical heat

Documentation:

• Shelly Knowledge Base
• Shelly Forum

Technical Data:

• Manufacturer: Shelly (Allterco Robotics)
• Manufacturer SKU: SBHT-203C
• EAN: 3800238072414
• Radio Standards: Zigbee 3.0 (IEEE 802.15.4) and Bluetooth 5
• Frequency Band: 2.4 GHz
• Measurement Variables: Temperature, relative humidity
• Power Supply: 1× CR2032 lithium button cell
• Battery Included: Yes
• Protection: Water and dust resistant
• Housing Material: Plastic
• Color: Ivory
• Compatibility: Shelly Smart Control App, Shelly BLU Gateway, Shelly
• Dimensions: 37 x 37 x 10mm
• Weight: 26g