sensor

Aqara Temperature and Humidity Sensor

Name: Aqara Temperature and Humidity Sensor
Brand: Aqara

Aqara

budget HA: excellent local: excellent Zigbee

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Aqara Temperature and Humidity Sensor - Tiny

Owner’s hands-on review ★★★★★

Are they accurate? Maybe. Are they cheap enough I don't care? Yes

Here’s how I think about temperature sensors for home automation. I reach for them for one of a few reasons:

Comfort - I want a room held at a certain temperature or humidity.
Function - I want to act on a reading, like turning a bathroom fan on when someone is showering and back off once the humidity drops.
The “I’m an idiot” reason - I forget to shut the drink fridge or the garage freezer. In one case the drinks went warm and a wall of ice built up at the back; in another, an open freezer door spoiled close to a thousand dollars of food while my wife and I were at the hospital for a couple of days. Coming home to that is no fun.

For those last two categories I don’t need accuracy, I need a delta - a change worth alerting on. For the comfort category you can apply an offset so the reading tracks true, but our Ecobee has temperature pucks, so I usually lean on those for comfort instead.

Site owner · 2026-06-09

Quick verdict

Aqara's classic Temperature and Humidity Sensor is a tiny, cheap Zigbee unit that also reports atmospheric pressure. It pairs locally through zigbee2mqtt or ZHA and supports calibration offsets. At this price you can scatter them around the house for room-by-room climate data in Home Assistant.

Standout: Tiny, very cheap Zigbee sensor that reports temperature, humidity and atmospheric pressure.

Last checked: 2026-05-25

Compatibility snapshot

Home Assistant excellent

Apple Home none

Google Home none

Alexa none

Works offline yes

Setup easy

Extra hub needed yes

Power battery

Why it stands out

measures temperature, humidity and atmospheric pressure in one tiny unit
very cheap, so easy to place several around the house
supports per-sensor calibration offsets in zigbee2mqtt

Reasons to hesitate

requires a Zigbee coordinator (Aqara officially supports only their own hub, but ZHA/zigbee2mqtt work well)
Xiaomi/Aqara Zigbee devices can occasionally drop off non-Aqara meshes
battery device reports on intervals, not instantly