🌍 Stay ahead of the climate curve with Shelly BLU H&T — smart sensing, smarter living.
The Shelly BLU H&T Black is a compact, IP54-certified Bluetooth temperature and humidity sensor designed for indoor and outdoor use. It offers ±0.5% measurement accuracy, up to 3 years of battery life on a CR2032 cell, and stores up to one year of environmental data. Compatible with Shelly Gateways and popular voice assistants, it enables real-time monitoring and alerts to help prevent fire or flooding risks, making it an essential smart device for proactive climate control.
| Manufacturer | Shelly Europe |
| Part number | 680 |
| Item Weight | 13 g |
| Product Dimensions | 3.7 x 3.7 x 3.7 cm; 13 g |
| Batteries | 1 C batteries required. (included) |
| Item model number | 3800235266809 |
| Size | Pack of 1 |
| Colour | Black |
| Material | Plastic |
| Voltage | 3 Volts |
| Wattage | 3 watts |
| Item Package Quantity | 1 |
| Measurement System | Number |
| Measurement Accuracy | +/-0.5% |
| Plug profile | Surface Mount |
| Specification met | RoHS |
| Included components | 1x Shelly BLU H&T Black |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
| tech_spec_battery_description_toys | Lithium |
X**S
Excellent sensors.
Excellent sensors. Very long battery life using BLE technology.Fairly accurate for a sensor at this price point.Usual high Shelly quality.Operates well in challenging situations such as inside a fridge.Works with the Shelly app or with Home Assistant using a Bluetooth proxy such as the one built in to many Shelly devices.Battery life is so long on these sensors that the manufacturer ships them from the factory with the battery already installed and the sensor active. I use Home Assistant and the sensor was automatically detected while still in the unopened package just after the postman pushed the package through the letterbox. Can’t ask for much more than that!
C**Y
Excellent device. Easy to set up.
Superb. Shelly has really come on in the last few years.
A**R
Works perfect for this custom application
Working great for 6 months now monitoring the temperature and humidity of my loft that turns on and off a Shelly smart socket with an extractor fan.Condensation in the loft solved👍🏻Note: you will need the Shelly Bluetooth usb dongle to connect it to your WiFi network for off site access.
A**.
Sensor in to Home Assistant
Great device for recording temperature and humidity into Home Assistant
A**R
If you absolutely must use a Shelly thermostat, this is the best choice
In terms of it's build, the Shelly Blu H&T is well made and inconspicuous.Of all the H&T sensors they make, this is the best as it sends out a reading every 11 seconds and can last ages on a 2032 battery.For those who understand the difference, it's measurements are very reliable but not accurate - meaning, for example, when it says 20.8°c, it's actually 19.7°c, but as long as you implement this calibration into your thermostat settings, you will get the temperature spot on.For anyone wanting to use this as a thermostat at home - make sure to set it up as a "scene" rather than the thermostat as the thermostat is extremely limiting in what you can do.
Trustpilot
1 day ago
2 months ago
