Shelly Blu H&T

Device image

Shelly BLU H&T (the Device) is a smart Bluetooth humidity and temperature sensor featuring long battery life.

Climate control: Adjust the heating, ventilation, and air conditioning system based on current temperature and humidity levels to maintain a comfortable indoor environment.
Prevent mold and mildew: Monitor humidity levels to prevent the growth of mold and mildew in spaces like basements and bathrooms. The Shelly BLU H&T can activate ventilation or dehumidification devices when needed.
Alerts and notifications: Receive alerts or notifications when the temperature or humidity reaches predefined thresholds and prevent issues like frozen pipes in cold weather or excessive moisture.
Optimizing greenhouse conditions: Optimize conditions for greenhouse plants by adjusting watering systems and ventilation based on humidity and temperature levels.
Security enhancement: Increase your home protection by detecting unusual temperature changes that might indicate fire or flood.
Appliance control: Adjust operation of dehumidifiers, humidifiers, and fans based on the current temperature and humidity conditions.

One push button
- Press briefly to receive the currently measured ambient temperature in °C and relative humidity in percent, as well as a button-pressed event.
- Press and hold for 10 sec to pair ShellyBLU H&T with another Bluetooth device.
- Press and hold for 30 sec to factory reset (possible only shortly after inserting the battery).

Type	Value
Physical
Size (HxWxD):	37x37x10 mm / 1.46x1.46x0.39 in
Weight:	13 g / 0.44 oz
Mounting	On a flat surface
Shell material:	Plastic
Color:	Black: C-0%; M-0%; Y-0%; K-100% Mocha: C-0%; M-12%; Y-28%; K-12% Ivory: C-3%; M-4%; Y-14%; K-8%
Environmental
Ambient temperature:	-20 °C to 60 °C / -5 °F to 140 °F
Humidity:	0% to 100% RH
Electrical
Power supply:	1x 3 V battery (included)
Battery type:	CR2032
Battery life:	3 years
Sensors
Humidity sensor:	Yes
Temperature sensor:	Yes
Bluetooth
Protocol:	4.2
RF band:	2400 - 2483.5 MHz
Max. RF power:	<4 dBm
Range:	Up to 30 m / 100 ft outdoors, up to 10 m / 33 ft indoors (depending on local conditions)
Firmware capabilities
Encryption:	AES encryption (CCM mode)

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