Breadcrumbs

Shelly BLU H&T ZB

ShellyBLU H&T.jpg

Device identification

  • Device name: Shelly BLU H&T ZB

  • Device model: SBHT-203C

  • Device Bluetooth ID: 0x0011

Device models reference

Short description

Shelly BLU H&T ZB is a smart humidity and temperature sensor. It has Zigbee and Bluetooth connectivity ensuring a secure connection with an extended battery life.

Main features

  • Long battery life

  • Air temperature and humidity reporting

  • Splash and dust-resistant

  • Compact size

Use cases

  • 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.

Connectivity

  • Bluetooth

  • Zigbee

User interface

Inputs

  • One push button

    • One press: Sends the currently measured ambient temperature in °C, relative humidity in %, and a button-pressed event.

    • Four quick presses or 10-second press: Initiates pairing with another Bluetooth device.

    • Five quick presses: Activates Zigbee pairing.

    • A 30-second press: Performs a factory reset (possible only shortly after inserting the battery).

Outputs

  • One single-color (red) LED

    • One flash: The Device sends the current ambient temperature, humidity, and button-pressed event.

    • One flash every 2 seconds for 1 minute: The Device enters Bluetooth pairing mode for 1 minute.

    • Two flashes every 2 seconds for 1 minute: The Device enters Zigbee pairing mode for 1 minute.

    • One long flash: The Device performs a factory reset.

Specifications

Quantity

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

  • Mocha

  • Ivory

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:

5 (LE)

RF band:

2402 - 2480 MHz

Max. RF power:

<8 dBm

Range:

Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

Zigbee

Protocol:

802.15.4

RF band:

2405 to 2480 MHz

Max. RF power:

< 8 dBm

Range:

Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

Microcontroller unit

CPU:

EFR32MG27

Flash:

768 kB

Firmware capabilities

Schedules:

No

Webhooks (URL actions):

No

Scripting:

No

MQTT:

No

Encryption:

Yes

Other

Supported Devices

  • Shelly Plus / Gen3 / Gen4 series

  • Shelly Pro series

Components and APIs

Compliance

Printed user guide