ThermoSphere Wireless Temperature & Humidity Sensor for BT21

ThermoSphere Wireless Temperature & Humidity Sensor for BT21

Smart, Wireless Room Sensing for Accurate Climate Control

The ThermoSphere Wireless Temperature & Humidity Sensor works with the BT21 thermostat to improve room comfort and energy efficiency. It tracks real-time room temperature and humidity, so your heating system can respond to actual conditions—not just the air near the thermostat. As a result, it helps your system deliver more consistent warmth and smarter energy use.

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Smarter Climate Monitoring

From the moment you pair it with the BT21 thermostat, this sensor begins tracking room conditions.
Whether you place it across the room or in a separate zone, it gives the thermostat a better understanding of the overall climate.

Specifically:

• It monitors both temperature and humidity for better accuracy

• It balances comfort across the space

• As a result, your heating system adjusts more precisely

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Wireless and Easy to Use

This sensor is compact and completely wireless, so you can install it in minutes.
You can choose to mount it on a wall or simply place it on a flat surface.
Because it doesn’t require cables or rewiring, it’s a great fit for both new builds and retrofit projects.

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Improves Comfort and Cuts Waste

The sensor feeds live temperature and humidity data to the BT21, which adjusts the heating to match real-time room needs.
This leads to better comfort, fewer temperature swings, and more efficient use of energy.

In addition:

• It improves control in rooms with uneven heat distribution

• It prevents overheating and reduces energy use

• Over time, it helps lower running costs and improves home comfort

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Key Features

• Compatible With: ThermoSphere BT21 thermostat

• Wireless Operation: Battery-powered, no cables required

• Measures: Room temperature and humidity

• Installation: Wall-mounted or free-standing

• Setup: Quick pairing with the BT21 thermostat

• Energy Savings: Helps reduce waste by improving response accuracy