Updated October 2026
Data from the official Google and Shelly sites.
2026 verdict
For a small, splash-resistant sensor in a bathroom or garage, the Shelly BLU H&T ZB is the better choice between these two.
It runs Zigbee and Bluetooth 5 LE in one coin-cell device, measures temperature and humidity, is IP54 rated and reaches Home Assistant through Zigbee2MQTT, with around three years on a single CR2032. The Nest Temperature Sensor is the smoother companion for a Nest thermostat and is credited with energy savings from room scheduling, but it reads temperature only, with no screen, alerts or history. Pick the Shelly for a general-purpose sensor and the Nest only to balance a room on a Nest thermostat.
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| Feature | Nest Temperature Sensor | Shelly BLU H&T ZB | Winner |
|---|---|---|---|
| Price | $34.99 | $22.99 | Shelly BLU H&T ZB |
| Rating | 4.6 | 4.4 | Nest Temperature Sensor |
| Warranty | 1 year | 2 years | Shelly BLU H&T ZB |
| Battery Life | 2 years | 3 years | Shelly BLU H&T ZB |
| Connectivity | Bluetooth | Bluetooth, Zigbee | Shelly BLU H&T ZB |
| Integrations | Google Home | Google Home, Alexa, Samsung SmartThings, Home Assistant | Shelly BLU H&T ZB |
| Sensors | Temperature | Temperature, Humidity | Shelly BLU H&T ZB |
| Alerts | None | Temperature Alerts, Humidity Alerts | Shelly BLU H&T ZB |
| Screen | NO | NO | Tie |
What the differences mean
What it measures
The Shelly BLU H&T ZB measures temperature and relative humidity across the full 0 to 100% RH scale. The Nest Temperature Sensor measures temperature only, so it cannot tell you how damp a bathroom or a basement is.
Weather resistance
Shelly rates the BLU H&T ZB IP54, which covers dust and splashes and suits a bathroom, a garage or a sheltered balcony. The Nest Temperature Sensor carries no weather rating and is indoor only.
Standalone or accessory
The Shelly BLU H&T ZB is a Zigbee and Bluetooth sensor that works with a coordinator and a Shelly gateway. The Nest Temperature Sensor has no independent connectivity and only reports to a paired Nest thermostat, so it does nothing without one.
Battery
The Shelly BLU H&T ZB runs on a single CR2032 rated for around three years, so it disappears for a long time. The Nest Temperature Sensor uses a CR123A rated for about two years, and a few owners report regional pairing trouble rather than battery trouble.
Smart home reach
The Shelly BLU H&T ZB gets into Home Assistant through Zigbee2MQTT and reaches Alexa, Google Home and SmartThings through a Shelly gateway. The Nest Temperature Sensor works only inside the Google Home app via its thermostat, with no Alexa, HomeKit, SmartThings, Home Assistant or Matter path.
Which one to buy if
- the sensor has to go in a bathroom, garage or covered patio
The Shelly BLU H&T ZB is IP54 rated, while the Nest carries no weather rating.
- you already own a Nest thermostat and want room balancing
The Nest Temperature Sensor is made to schedule a Nest thermostat around a chosen room.
- you run Home Assistant on a Zigbee network
Zigbee2MQTT supports the Shelly BLU H&T ZB directly and exposes temperature, humidity and battery.
- you want a sensor you only touch once every few years
A single CR2032 is rated for around three years, longer than the Nest's two-year cell.
- you want humidity readings
Only the Shelly BLU H&T ZB measures humidity; the Nest is temperature only.
10% OFF
$34.99
$39.00
- + Rating: 4.6
- - Price: $34.99 vs $22.99
- - Warranty: 1 year vs 2 years
Winner
$22.99
- + Price: $22.99
- + Warranty: 2 years
- + Battery Life: 3 years
- - Rating: 4.4 vs 4.6
What owners say
Owners of the Nest Temperature Sensor describe it as a game-changer for split-level and multi-story homes, where one sensor per key room lets the thermostat follow the bedroom overnight and a living space during the day, evening out rooms that always ran hot or cold. They praise the quick, wiring-free Google Home setup, the small unobtrusive puck, a battery rated for about two years and the energy savings that come from conditioning occupied rooms only. Their complaints are that it is a closed Nest accessory with no independent connectivity or integrations, and that a notable share of buyers outside the US report it refusing to pair because their thermostat's software region is not supported. Several also wish it measured humidity, since it does not.
Frequently Asked Questions
Which is better overall: Nest Temperature Sensor or Shelly BLU H&T ZB?
The Shelly BLU H&T ZB for most buyers, since it measures temperature and humidity, is IP54 rated and works with Zigbee and Bluetooth 5 LE through Home Assistant. The Nest Temperature Sensor is the better fit only for an existing Nest thermostat, where its one job is steering heat to the room you choose.
What is the biggest difference between the Nest Temperature Sensor and the Shelly BLU H&T ZB?
The Shelly BLU H&T ZB is a standalone climate sensor with two radios, a weather rating and a three-year coin cell, while the Nest Temperature Sensor is a closed accessory that reads temperature for a Nest thermostat and nothing else.
Does the Shelly BLU H&T ZB need a hub?
It needs a place to report to. Over Zigbee it joins an existing coordinator, and to appear in the Shelly app, and therefore Alexa, Google Home or SmartThings, it needs a Shelly gateway or another Shelly Plus, Pro, Gen3 or Gen4 device on the network.
Does the Shelly BLU H&T ZB work with Home Assistant?
Yes. Zigbee2MQTT supports this exact model, exposing battery, temperature and humidity, so it appears in Home Assistant as soon as it joins the Zigbee network.
Does the Nest Temperature Sensor work with HomeKit or Matter?
No. The Nest Temperature Sensor only integrates with Google Home through its connected Nest thermostat and does not support Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant or Matter.
Who should buy which one?
Buy the Shelly BLU H&T ZB for a Zigbee home, a damp room or a general-purpose temperature and humidity sensor. Buy the Nest Temperature Sensor only if a supported Nest thermostat already hangs on your wall.
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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.
- 36 Temperature & Humidity Sensors
- 43 specs compared
- 39 filters
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CamerasGoogleNest Cam Indoor (Wired, 3rd Gen)
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CamerasGoogleNest Cam Outdoor (Wired, 2nd Gen)
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CamerasGoogleNest Cam (indoor, wired)
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Door LocksGoogleNest x Yale Lock
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Smoke & CO DetectorsGoogleNest Protect (Wired)
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SpeakersGoogleNest Audio
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SpeakersGoogleNest Mini (2nd gen)
4.3(2,162)Unavailable
Streaming DevicesGoogleTV Streamer (4K)
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ThermostatsGoogleNest Learning Thermostat (4th gen)
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ButtonsShellyBLU Button Tough 1 ZB
4.7(12)Unavailable
ButtonsShellyBLU RC Button 4 ZB
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CamerasShellyCamera
DisplaysShellyWall Display X1i
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DisplaysShellyWall Display XL
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DisplaysShellyWall Display
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Door & Window SensorsShellyBLU Door/Window Outdoor ZB
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Energy MonitorsShellyEM Gen4
Unavailable
Energy MonitorsShellyEM Mini Gen4
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Gas DetectorsShellyGAS (CNG)
4.2(45)€63.61
Gas DetectorsShellyGAS (LPG)
LED BulbsShellyMulticolor Bulb E27 Gen3
4.2(35)€9.90
Motion SensorsShellyBLU Motion ZB
4.4(54)$26.99