Updated October 2026
Data from Amazon and official Shelly site.
2026 verdict
Two Shelly climate sensors, and the Shelly BLU H&T ZB is the pick for damp rooms, sheltered outdoor spots and fitting out several rooms at once.
Dropping the screen is what makes it a 37 mm, 13 gram square rated IP54 and able to run from -20 to 60 degrees Celsius, so it is the one of the pair that belongs in a bathroom, a garage or a covered balcony rather than on a shelf. It also runs on a single CR2032 rated for about three years, where the Shelly BLU H&T Display ZB uses two cells rated at around two. Both carry the same Bluetooth 5 LE and Zigbee 3.0 radios, both appear in Home Assistant through Zigbee2MQTT, and neither reaches Apple Home or Matter. The Shelly BLU H&T Display ZB wins on exactly one thing: its e-paper panel shows temperature, humidity, light level and a clock or date without opening an app. Choose the Shelly BLU H&T ZB when the number goes to a hub and the room gets damp, and the Shelly BLU H&T Display ZB when a person needs to read it on the wall.
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| Feature | Shelly BLU H&T Display ZB | Shelly BLU H&T ZB | Winner |
|---|---|---|---|
| Price | $25.99 | $22.99 | Shelly BLU H&T ZB |
| Battery Life | 2 years | 3 years | Shelly BLU H&T ZB |
| Screen | YES | NO | Shelly BLU H&T Display ZB |
| Rating | 4.4 | 4.4 | Tie |
| Warranty | 2 years | 2 years | Tie |
| Connectivity | Bluetooth, Zigbee | Bluetooth, Zigbee | Tie |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Google Home, Alexa, Samsung SmartThings, Home Assistant | Tie |
| Sensors | Temperature, Humidity | Temperature, Humidity | Tie |
| Alerts | Temperature Alerts, Humidity Alerts | Temperature Alerts, Humidity Alerts | Tie |
What the differences mean
Display
The Shelly BLU H&T Display ZB carries a 65 mm e-paper panel showing temperature, humidity, a three-level light indicator, a clock or date and the battery state, while the Shelly BLU H&T ZB has no screen at all and only a red LED. If someone needs to read the numbers without a phone, only the Display model can be that.
Weather and range
The Shelly BLU H&T ZB is rated IP54 and specified from -20 to 60 degrees Celsius, so it is the one built for a bathroom, a garage or a sheltered balcony. The Shelly BLU H&T Display ZB carries no IP rating and is documented as indoor with a -10 to 40 degrees Celsius range, so keep it dry.
Battery
The Shelly BLU H&T ZB runs on a single CR2032 rated for about three years, where the Shelly BLU H&T Display ZB needs two CR2032 cells rated at around two, because the e-paper panel draws power every time the numbers change. The display-less model asks less of its battery.
Size and weight
The Shelly BLU H&T ZB is a 37 x 37 x 10 mm, 13 gram square that disappears almost anywhere, while the Shelly BLU H&T Display ZB is a 65 x 65 x 9 mm, 38 gram panel that needs a visible spot. One is for hiding, the other for showing.
Light sensor
Alongside temperature and humidity, the Shelly BLU H&T Display ZB also reports a coarse three-level light reading of dark, twilight and bright, which the Shelly BLU H&T ZB does not measure. That extra channel is only useful if a scene or a dashboard wants to know how dark the room is.
Which one to buy if
- the sensor goes in a bathroom, garage or sheltered outdoor corner
The Shelly BLU H&T ZB is IP54 rated and runs from -20 to 60 degrees Celsius, where the Display model is indoor only.
- someone needs to read the room without a phone
The Shelly BLU H&T Display ZB puts temperature, humidity, light and a clock on its own e-paper screen.
- you are fitting several rooms
The Shelly BLU H&T ZB is the smaller, cheaper sensor with longer battery life, so one per room adds up for less.
- you also want a light-level reading
Only the Shelly BLU H&T Display ZB measures a dark, twilight or bright light level beside the climate readings.
- you want the longest battery life between changes
The single cell of the Shelly BLU H&T ZB is rated for about three years, against two for the Display model's two cells.
$25.99
- + Screen: YES
- - Price: $25.99 vs $22.99
- - Battery Life: 2 years vs 3 years
Winner
$22.99
- + Price: $22.99
- + Battery Life: 3 years
- - Screen: NO vs YES
What owners say
Owners of the Shelly BLU H&T Display ZB describe a sensor that asks very little once it is on the network: pairing in minutes over either its Zigbee or its Bluetooth radio, immediate recognition in Home Assistant, and readings regular and precise enough to drive automations such as a bathroom exhaust fan. The 65 mm, 9 mm thick square gets mentioned almost as often, because the rear magnets, a stand and a light weight let it go anywhere without being noticed. They single out the display for showing light level and a clock beside the two readings, and value that the BLE Debug app can configure it without owning a gateway. Their warnings are the gateway requirement for the Shelly app and voice assistants, the lack of any Apple Home route, fiddly multi-press controls, a firmware update flow with no feedback, and vague documentation.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Shelly BLU H&T Display ZB
- Shelly BLU H&T ZB
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Frequently Asked Questions
Which is better overall: Shelly BLU H&T ZB or Shelly BLU H&T Display ZB?
They measure the same two things, so it comes down to whether you want a screen. The Shelly BLU H&T ZB is cheaper, smaller, IP54 rated and lasts longer on one cell. The Shelly BLU H&T Display ZB is the one to buy when the temperature and humidity need to be readable on the wall as well as in a hub.
What is the biggest difference between the Shelly BLU H&T Display ZB and the Shelly BLU H&T ZB?
The display. The Shelly BLU H&T Display ZB has a 65 mm e-paper panel showing temperature, humidity, light level and a clock, while the Shelly BLU H&T ZB has none. The display-less model also adds an IP54 rating and a wider temperature range because there is no screen to protect.
Do the Shelly BLU H&T Display ZB and Shelly BLU H&T ZB need a hub?
Each needs one in some form. Over Zigbee both are end devices that join an existing coordinator, and Home Assistant reads them through Zigbee2MQTT. To appear in the Shelly Smart Control app, and therefore in Alexa, Google Home or SmartThings, both need a Shelly BLU Gateway or a Shelly Plus, Pro or Gen3 device on the network.
Can the Shelly BLU H&T ZB be used outdoors?
In a sheltered spot, yes. Shelly rates it IP54 against dust and splashes and points it at patios and balconies while advising against heavy rain, and its -20 to 60 degrees Celsius range covers cold garages and hot storage rooms. The Shelly BLU H&T Display ZB has no IP rating and is indoor only.
Do either of them work with Apple Home or Matter?
No. Both the Shelly BLU H&T Display ZB and the Shelly BLU H&T ZB carry only Bluetooth 5 LE and Zigbee 3.0, with no Matter certification and no Apple Home path. They reach Alexa, Google Home and SmartThings through the Shelly account, and Home Assistant over Zigbee.
Who should buy the Shelly BLU H&T Display ZB?
A Zigbee or Shelly household that wants the temperature, humidity and light level visible on the wall, with a clock, without picking up a phone, and is placing the sensor in a dry indoor room.
Who should buy the Shelly BLU H&T ZB?
Anyone monitoring a damp room or a sheltered outdoor spot who just needs the readings to reach a hub, especially when buying several sensors and wanting the smaller body and the longer battery life.
Full comparison table
Compare all 36 Temperature & Humidity Sensors side by side
You are looking at two of them. The full table lines up all Temperature & Humidity Sensors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
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