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!

Works as expected and love the HomeKit support! I would have given 5 stars if the devices would communicate directly with the native iOS app. For security concerns I have a preference where I block all HomeKit device from accessing the internet as they work great via the iOS Home app. Once the hub is blocked from accessing the internet the native app can no longer find it, thankfully, iOS Home app still works great (as expected)! So if you have a setup like this and block HomeKit devices from accessing the internet directly, know that you must get everything setup with the native app before you lock down your network.

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.

Good. Just Works. Inserted the battery, stuck it in my home's attic space, and it's been quietly reporting temp and humidity ever since. No problem integrating into my Hubitat HA network. Good price. Bad: Takes a while to settle in to the house's Zigbee mesh. Once there, however, it's reliable, and it'll be moved rarely if ever so the startup time isn't an issue. Bottom line. Does the job. Five stars. Bottom line

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.

So far so good working great out of the box

I recently purchased 4 of the Aqara Temperature and Humidity Sensors to integrate into my home assistant system. While the device offers basic monitoring capabilities, I have encountered several issues that significantly impact its performance and reliability. Range Limitations: The sensor's effective range is notably limited. In my experience, when placed more than approximately 30 feet from the Home Assistant Zeegbee receiver, the sensor struggles to maintain a stable connection. Beyond 35 feet, connection drops become frequent and disruptive, which is particularly frustrating for users with larger living spaces. Accuracy: The temperature and humidity readings provided by the sensor are adequate but not exceptional. For users seeking precise environmental data, this sensor may not meet higher accuracy standards. Build Quality: Based on my experience, I find the build quality of Aqara products, including this sensor, to be subpar. The device feels cheaply made, which raises concerns about its long-term durability. As for the battery compartment well it just sucks. Changing the battery can be difficult. The slot is a problem I found using a quarter or maybe a house key keeps from rounding it off. Helps. Zigbee Network Compatibility: Despite having a well-established Zigbee network with extenders in place, the sensor's range issues persist. This suggests that the device may not fully leverage the mesh networking capabilities that Zigbee is known for. The lack of a standardized protocol across different manufacturers seems to contribute to inconsistent performance among Zigbee devices. Recommendation: Given these challenges, I would not recommend the Aqara Temperature and Humidity Sensor unless it is placed within direct line of sight of your Zigbee hub or dongle. For those requiring reliable and accurate environmental monitoring over a more extensive area, exploring alternative sensors with better range and build quality would be advisable. In summary, while the Aqara Temperature and Humidity Sensor offers basic functionality, its limited range, average accuracy, and questionable build quality make it a less-than-ideal choice for comprehensive smart home integration.