Shelly BLU H&T ZB Sensor | Ivory | Zigbee + Bluetooth | IP54

Shelly BLU H&T ZB Temperature & Humidity Sensor – Ivory

Keep a closer eye on the indoor environment with the Shelly BLU H&T ZB Ivory, a compact wireless sensor designed to monitor temperature and relative humidity. Its small footprint makes it easy to position discreetly in a home office, bedroom, server-adjacent environment, storeroom, office, greenhouse or other suitable monitoring location.

For South African hybrid professionals, environmental monitoring can be particularly useful when working from home or managing a small office. Instead of relying on assumptions about the room environment, the Shelly BLU H&T ZB provides temperature and humidity measurements that can be incorporated into a compatible smart-home or automation setup.

The sensor supports both Bluetooth Low Energy and Zigbee, giving users greater flexibility when integrating it into their existing smart environment. The Zigbee version can be used with a compatible Zigbee gateway, while Shelly states that the device can also work with compatible Shelly gateways and supported Shelly Plus, Pro, Gen3 and Gen4 devices.

Its compact ivory enclosure measures only 37 × 37 × 10 mm and weighs approximately 13 g, making it suitable for discreet placement on a flat surface. The IP54 rating provides resistance to dust and water splashes, although it should not be treated as a waterproof device or submerged.

Key Features & Business-Class Highlights

Temperature and Humidity Monitoring

The Shelly BLU H&T ZB measures both ambient temperature and relative humidity, providing useful environmental information for residential and commercial spaces. For a home-office user, this can help monitor the working environment. For an SME, it can provide visibility into conditions in suitable storage, office or equipment areas.

The sensor supports an ambient temperature range of -20°C to 60°C and a humidity range of 0% to 100% RH, according to Shelly’s published specifications.

Bluetooth and Zigbee Connectivity

One of the main advantages of this model is its dual connectivity support. The Shelly BLU H&T ZB uses Bluetooth 5 (LE) and Zigbee 802.15.4, allowing it to fit into different smart-environment configurations.

Bluetooth provides a straightforward wireless option, while Zigbee can be useful for users building a broader smart-home or smart-office network around compatible infrastructure.

For larger environments, wireless range will depend on the building layout, walls, interference and other local conditions. Shelly specifies a range of up to 10 m indoors and 30 m outdoors for both Bluetooth and Zigbee, subject to local conditions.

Compact, Discreet Design

At just 37 × 37 × 10 mm, the sensor is designed to take up very little space. The Ivory finish can blend easily into many office and home environments.

This makes it particularly practical where a larger sensor or display would be unnecessary. It can be placed on a suitable flat surface without adding significant visual clutter.

IP54 Protection

The Shelly BLU H&T ZB carries an IP54 rating, providing protection against dust ingress and water splashes. This can be useful in appropriate indoor environments and selected sheltered locations, but the sensor should not be positioned where it will be exposed to direct water or submerged.

Long Battery Life

The sensor uses one included CR2032 3 V battery, with Shelly specifying a battery life of up to three years. Actual battery performance can vary according to usage and operating conditions.

The low-maintenance battery design makes the sensor practical for users who want environmental monitoring without running a power cable to every sensor location.

Security and Smart Automation

The Shelly BLU H&T ZB supports encryption and can form part of compatible smart-home automation scenarios. Temperature and humidity information can be used as part of broader environmental-control setups, depending on the compatible gateway, platform and automation equipment being used.

For example, a smart environment could use temperature or humidity information as an input for compatible ventilation, heating, cooling, humidification or dehumidification equipment. The exact automation capabilities depend on the wider Shelly or third-party system being used.

Suitable for Home Offices and SMEs

For South African hybrid workers, a small environmental sensor can be useful in a home office where comfort and environmental conditions are worth monitoring throughout the working day.

SMEs can also consider sensors for suitable office areas, storage environments, workspaces or other locations where temperature and humidity monitoring forms part of an existing smart-building or automation strategy.

The device can also be useful to smart-home enthusiasts building a network of sensors throughout a property.

Explore other products from Shelly or browse our Smart Home Sensors category for additional compatible solutions.

Gateway Requirements

It is important to distinguish this model from Shelly’s standalone Bluetooth-only products. Shelly states that the BLU H&T ZB requires a compatible gateway for use with the Shelly Smart Control app, with compatible options including the Shelly BLU Gateway and certain Shelly Plus, Pro, Gen3 and Gen4 devices. A compatible Zigbee gateway is required when using the sensor within a Zigbee network.

Check the Official Shelly Support resources for current compatibility, setup and firmware information before installation.

Practical South African Use Cases

The Shelly BLU H&T ZB can be used in a variety of suitable environments where wireless temperature and humidity monitoring is useful.

For a home office, it can provide environmental readings without occupying desk space or requiring mains power.

For an SME office, multiple sensors can potentially be incorporated into a broader smart-building environment, subject to the appropriate gateways and compatible automation platform.

For storage areas, temperature and humidity monitoring can provide useful visibility where environmental conditions matter. However, the sensor should only be used within its specified operating limits and protection rating.

For smart-home projects, its combination of Bluetooth and Zigbee connectivity makes it a flexible component for users who already have compatible infrastructure.

The compact design, low weight and battery operation also make it easier to deploy than a mains-powered sensor where a nearby power outlet is unavailable.

Pros and Cons

Pros

• Compact 37 × 37 × 10 mm design.
• Measures both temperature and relative humidity.
• Supports Bluetooth 5 (LE) and Zigbee.
• IP54-rated for dust and water-splash resistance.
• Up to three years of specified battery life.
• CR2032 battery included.
• Lightweight 13 g design.
• Encryption support.
• Suitable for home-office, smart-home and selected SME monitoring applications.
• Available in a discreet Ivory finish.
• Backed by a 2-year warranty.

Cons

• The ZB model requires a compatible gateway for Shelly Smart Control or Zigbee operation.
• Wireless range can vary depending on walls, interference and local conditions.
• CR2032 battery life can vary according to operating conditions and usage.
• It does not include an integrated display, so readings are accessed through a compatible system rather than directly from the sensor.
• IP54 protection does not mean the device is waterproof or suitable for immersion.
• Advanced functions such as schedules, webhooks, scripting and MQTT are not listed as supported firmware capabilities for this model.

For users looking for a discreet and flexible way to monitor temperature and humidity, the Shelly BLU H&T ZB Ivory combines a compact design with Bluetooth and Zigbee connectivity, making it a practical addition to a compatible smart-home, home-office or business automation setup.