Aqara Zigbee Temperature and Humidity Sensor, Wireless Thermometer Hygrometer for Home Automation, Remote Monitoring, Requires Aqara Hub (not 3rd-Party), Compatible with Apple HomeKit, Alexa, IFTTT

You do not need the Aqara Hub if you intend to run this sensor as part of a Home Assistant integration. Instead you will need a Zigbee dongle, etc., and that's it! This sensor works very well and installs easily. As far as I am concerned the build quality is great and thus far I have had zero connectivity issues. The price is more than reasonable for what you are getting. I intend to buy more Aqara sensors.

I love how easy and tiny they are! Battery still hasn’t died on me. Always stays connected with hub and HomeKit! I have one on the ceiling in each room. This is my best friend when it comes to bathroom. Once the humidity hits this % then it automate the switch to turn on bathroom fan! When it drops below % then it turns off the bathroom fan!I found this to show more accurate temperature and humidity than HomePod does. Plus HomePod doesn’t work with automation. This one does! HomePod is very slow with updating while this is rapid and consistent!

The form factor is very small, therefore it can be easily installed anywhere.The Aqara Home App don’t allow to visualize the battery level. Everyone must have been using the Xiaomi app. (Mi Home)A way to check battery level is from the Apple Home app. (For iPhone users)With the battery straight out of the box, first measurement was 75%.Now, 4-5 days after, battery level is at 62-64%.It’s a short period of time Toni or if the device is not capable of measuring the battery properly or not. But seems like it’s important to use good batteries afterwards, like energizer for example.About the accuracy, it seems to be aligned with a pretty accurate device.I did get two sensors right away. They were having a small difference one to another. And these were, for testing, side by side.Conclusion :These are good for indication. For truly accurate measurement, I don’t think these can fulfill the need. It’s cheap, seems to not do well with battery life. Temperature can be trusted, humidity is I think a rough estimate, and battery level seems totally off.

Good basic sensor. Works fine. It does work with the Hubitat Elevation C with no major hassle setting up. Use mostly in basement as part of a routine to start a manual dehumidifier as needed. (Hubitat Routine also sends a text to let me know it was turned on and a reminder to check water level in 8 hours)

I purchased two of these Aqara Temperature and humidity sensors plus one door sensor for use with Home Assistant. Installation and setup in HA was easy however one the temperature & humidity sensors and the door sensor would not stay on-line. Replaced the worthless batteries that came with all three devices and had to separate my Nortec controller from my Raspberry Pi before the door sensor would work. Placed the temperature and humidity sensor that wouldn't stay connected in several different locations but never could get it to stay connected for more than about an hour. The other temperature and humidity sensor worked straight out of the box with no issue. With such a track record of 50% defective, I cannot recommend Aqara products. (Note, all my other zigbee devices, which consist of many different brands, have never presented any issues whatsoever.)Update – the temp/humidity sensor that initially worked without issue has now died six weeks after installation. Energizer battery I replaced their battery with still reads 3.2 volts as it did out of the package. In the words, battery is not the issue. It appears these Aqara sensors are just junk. Aqara did contact me after my initial review and sent me a replacement sensor for the one which would not stay connected out of the box. The replacement has worked for the ~4 weeks since I got it but given this most recent failure, I’m betting that in about two weeks, it too will die.I purchased the Aqara brand sensors based on the recommendation of a certain Youtuber who’s videos on Home Assistant I like. Apparently, that was a mistake.

Great value and the Aqara sensor stays connected to my Smartthings v3. If you have a Philips Hue hub I would recommend unplugging before setting up your Aqara sensor. The Aqara sensor prefers to be paired directly to the Smartthings v3 hub first.Update: I'm using a custom IDE on a Smartthings V3 hub and I am experiencing zero disconnections. If you have a Philips Hue hub: power it down first, before syncing your Aqara sensor. The Aqara battery is still reading 97%-100% which is incredible. I'm using these sensors to automate window ac units combined with Securifi Peanut Smart Plugs. The GE window ac unit's thermostats are highly inaccurate and reading the sun/outside temps vs inside temperatures. If you are concerned about reducing the life on your window ac units/safety: Set a long delay for it to turn off, so you are not short cycling the units and stressing your rated smart plugs. Don't use wifi smart plugs. Always use Zwave+/Zigbee smart plugs, so you don't over-saturate your network with wifi devices. The Zwave+/Zigbee protocol is far more reliable vs wifi. I'm working on implementing and replacing Smartthings with a RPI4 with HA or Hoobs for local control. You can also integrate Smartthings with HA/Hoobs if you prefer to keep Smartthings.Update: Ordered a second sensor and it came with a dead battery. I happened to have a new Energizer CR2032. Everything works fine. The bad battery that came with the sensor would only power the Aqara for 10 minutes.

I have a few of these both inside and (sheltered in a 3d print) outside the house for fan control. The battery lasts longer than most of my zigbee sensors and they are accurate and reliable. Stick em and forget. They rotate off for battery replacement without and rotate back on. Just about to buy another so dropping in the review.