Shelly BLU H&T Display ZB

Device image

Device identification

Device name: Shelly BLU H&T Display ZB
Device model: SBHT-103C
Device Bluetooth ID: 0x000C

Short description

Shelly BLU H&T Display ZB is a battery-powered sensor featuring a crisp e-paper display that shows real-time temperature, humidity, light levels, and a digital clock - all in one compact unit.

Designed to blend into any space, the Device comes with a stand for tabletop use and can also be mounted on a wall or other vertical surface. Whether placed in your living room, nursery, or office, it gives you instant insight into indoor conditions.

With Zigbee 3.0 and Bluetooth 5.0 support, it pairs seamlessly with your smart home system and ensures reliable performance for comfort automation and energy savings.

Main features

Real-time temperature, humidity, and light level monitoring
Clear and energy-efficient e-paper graphic display with color inversion option
Built-in digital clock for added convenience
Battery-powered for flexible placement and long-lasting operation
Power save mode to stop screen refresh in complete darkness, preserving battery life while still reporting data
Regular clock synchronization from Shelly devices selected as Bluetooth gateways for always-accurate timekeeping (via upcoming firmware update)
Dual wireless support with Zigbee 3.0 and Bluetooth 5.0
Comes with a tabletop and wall stands for versatile setup
Embedded rear magnets for easy attachment to metal surfaces or wall stand
Perfect for homes, offices, or any indoor space
Seamless integration with Shelly smart devices and third-party platforms

Use cases

Monitor Room Conditions at a Glance
Place the BLU H&T Display ZB in your living room, bedroom, or office to track real-time temperature, humidity, and brightness levels
Ensure Comfort in Nurseries and Bedrooms
Keep an eye on the environment where comfort matters most. Use the display to make sure the temperature and humidity stay within optimal levels for sleep and wellness.
Smart Lighting and HVAC Automation
Combine with other Shelly devices to automate lighting and heating based on the room’s light level, temperature, or humidity readings.
Optimize Energy Usage in Your Home
Use real-time environmental data to reduce energy waste - automate blinds, fans, or heaters only when needed based on actual room conditions.
Keep a Cozy Atmosphere All Day
Use the lux sensor to track changing natural light throughout the day and adjust indoor lighting for comfort, mood, or relaxation without over-lighting the space.

Main Applications

Residential
MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)…
Light commercial (small office buildings, small retail/restaurant/gas station, etc.)…
Government/municipal
University/college

Integrations

Amazon Alexa supported capabilities

Temperature Sensor

Google Smart Home supported traits

Humidity Setting
Temperature Control (status report)

Samsung SmartThings supported capabilities

Relative Humidity Measurement
Temperature Measurement

Connectivity

Bluetooth
Zigbee

User interface

Inputs

Single Button
- Press 1 time: Enter setup mode for 3 minutes.
  - Press 1 time: Exit setup mode.
  - Press 2 times rapidly: Force clock synchronization via a Shelly device set as a Bluetooth gateway.
  - Press 4 times rapidly: Enter Bluetooth pairing mode.
  - Press 5 times rapidly: Enter Zigbee pairing mode.
  - Press and hold for 5 seconds: Toggle Bluetooth on/off.
  - Press and hold for 10 seconds: Toggle Zigbee on/off.
  - Press and hold for 30 seconds: Resets the device to factory settings.
- Press 2 times rapidly: Toggle the clock display segment between showing the clock or the date.
- Press 3 times rapidly: Switch temperature unit between Celsius and Fahrenheit. When Celsius is selected, the date format is DD.MM; when Fahrenheit is selected, the date format is MM.DD.
- Press 4 times rapidly: Invert the display colors.
- Press 5 times rapidly: Toggle the clock format between 24-hour and 12-hour.

Outputs

E-paper graphic display

	Current time
	The Device is in Setup mode.
	Bluetooth pairing is enabled
	Zigbee pairing is enabled
	Zigbee identify
(on the space of the clock)	Clock is syncing
(on the space of the clock)	Clock sync failed
	Humidity readings
	Indicates light sensor level (3 levels).
	3 bars - Bright light
	2 bars - Twilight
	1 bar - Dark
	No bars – Battery Saver is ON. Screen updates are paused, but wireless reporting continues. Displayed data may be outdated.
	Indicates battery level
	Bluetooth connectivity is enabled
	Zigbee connectivity is enabled
	Over-the-air update is in progress. The display shows the update progress percentage instead of the humidity.
	Error while updating the firmware

Specifications

Quantity	Value
Physical
Size (HxWxD):	65x65x9 mm / 2.56x2.56x0.35 inch 65x65x33 mm / 2.56x2.56x1.30 inch (with tabletop stand)
Weight:	38g / 1.34 oz (with batteries) 43g / 1.52 oz (with batteries and tabletop stand)
Mounting:	Wall Tabletop or Shelf
Shell material:	Plastic
Shell color:	White Black
Screen protector:	Yes, pre-applied
Environmental
Ambient working temperature:	-10°C to 40°C / 14°F to 105°F
Humidity:	30% to 70% RH
Max. altitude:	2000 m / 6562 ft
Electrical
Power supply:	Batteries
Battery type:	2 x CR2032
Estimated battery life:	Approx. 2 years (depending on batteries used, device usage, and network connection strength)
Sensors, meters
Temperature sensor:	Yes
Humidity sensor:	Yes
Light sensor:	Yes
Radio
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

Q&A

What affects the battery life of the device?

Battery life can vary depending on several factors:

The device adjusts its e-ink refresh mode based on temperature: normal mode in standard conditions and cold mode during low or negative temperature. Cold mode reduces battery life.
Using both Bluetooth and Zigbee concurrently can significantly reduce the battery life
Distance from your router or hub and poor network quality can also reduce battery performance.

How is the clock on the BLU H&T Display ZB kept in sync?

The device’s clock can be updated in the following ways:
- Shelly App – When the device connects to the Shelly App on your phone, the clock updates automatically, applying the correct time and time zone.
- Shelly BLE Debug App – Connect the device to the Shelly BLE Debug App on your phone to set the correct time and time zone.
- Automatic clock synchronization – When enabled (for example in the Shelly App), the device regularly syncs its clock via Shelly devices acting as Bluetooth gateways, keeping the time accurate (available in a future firmware update for Shelly Wi-Fi devices).