Aqara Zigbee Door and Window Sensor 3 Pack, Wireless Mini Contact Sensor, Home Automation, Requires Aqara Hub, Zigbee Connection, Kid Safety, Compatible with Apple HomeKit, Alexa, Works with IFTTT

I'm using these sensors with a Sonoff USB adapter and Zigbee2MQTT which is connected via Mosquito to Home Assistant. They work fantastic in this setup.Battery life was about 2 years so far on my most active sensor which is pretty good. The Zigbee range is solid with a good connection even though walls and across the house.

There's a lot to like about these little sensors, but a few things to note as well.First, I bought one of these to test before committing to putting them on all of my windows and doors. Worked great. I have now purchased several more sensors.I've seen recommendations that you don't pair your devices with the receiver until you have it near where the final install is located. It was explained that zigbee networks kind of self-sort and adjust power, channels, etc. based on the network signal. I have no idea if this is true, just passing it on.The Good:-- I connected these to Home Assistant via a Sonoff Zigbee USB receiver and ZHA integration. Home Assistant picked it up almost immediately upon putting it into pairing mode.-- The open/close signal is picked up within a fraction of a second. Very sensitive.-- There's a basic temperature sensor in the device that is reported back to HA.-- The devices report back LQI for your network. Kind of handy to know.-- However small you think these things are, you're wrong. They're smaller. I wouldn't call them non-descript, but they were significantly smaller than the devices they replaced. A quarter of the size. You can find the dimensions on the product page.The Less Than Ideal:-- Sometimes when I close my windows, the window "bounces" a little. Just enough for the sensor to "close" and then immediately "open" again even though the window is closed and properly seated. It's kind of annoying since the only way to see if this happened is to open the HA app and check the status. Maybe I should just pulse the lights in the room when it's been closed for 5 seconds. Anyways...-- There is only a small fraction of the information I would have preferred transmitted-- RSSI is not reported to HA. Not sure if this is a HA thing, Sonoff thing, ZHA thing, or Aqara thing.-- The temperature isn't very useful. It's the temperature of your door frame basically. I'm not entirely sure about the accuracy, but I have my doubts.The Ugly:-- The batteries that are shipped all show up as about 75% upon installation. Really annoying. But not a dealbreaker I suppose.The Undetermined:-- I've had these installed for 2-3 months. For the first month, several batteries went from "100%" to 77.5%. All have basically stayed at 77.5% for the entirety of the second and third months. Another went from "100%" to 55% in the first month. Another is at 65% after two months. There's no correlation between amount of use and battery life as of yet. My longest-lasting and first installed battery is also the battery with the highest amount of life left.--Update 10-28-2024: I have yet to replace the batteries in a single one of these. I have had three installed since May 2023, another three since July 2023, and couple of singles installed since. All are hovering between 50% and 70% battery remaining and have been flat since roughly November 2023.Bottom Line:I'd recommend them if you're looking for non-wifi, immediate signal, zigbee door/window sensors that are small. They tick just about every box you could need.

Great device. Logs are accurate and it is easy to set up and install!

Make sure you read the directions! It isn’t obvious which sides of the devices should be touching/close. Once I figured that out, they worked great as replacements for my ring detectors.

Works perfectly. Placed it in my entrance door, so I could automate the lock to go into the secure position when closing the door. This was a pretty good convenience. I am going to get a few more for other doors and windows!

Works reliably and as intended. It was easy to pair and easy to attach to my door. I use these for home assistant with zigbee

I use these connected to my Home Assistant automation, and mainly got them to use on my downstairs upright freezer. We've had ...um... issues with some people closing the freezer door after using it, and I have HA send me a notice if the freezer door is open more than 30 seconds. There are many other uses for this device, of course, but this has saved me more than once now with having that door left open. Aqara makes some amazing little devices like this including temp sensors (one of which is in that same freezer and alerts if the temp gets too high), and this thing is very small, and the battery seems to last forever. And the price is very reasonable, I'll be buying more as I find the need for them.

After spending a few hundred dollars on these door sensors along with water and humidity sensors after seeing the amazing battery life reviews, o picked up a ton of sensors at the prices no one else got near. I then tried to connect to my zigbee network and after minutes, the sensors stopped reporting and just locked up in home assistant zigbee. After getting some tips from other users with the same exact issues, I ended up installing zigbee2MQTT and migrated my entire zigbee network over to it just for the sensors. I mate'd all the sensors, and they seem to be working great. But then I noticed after anywhere from a week to a month, they stopped working locking up and not reporting. I would then rejoin them, and they would work fine again until a week or a month later. On all the home assistant forums, I worked with a bunch of other users playing around with settings and everything else.It turns out Aquara does not follow the zigbee standard. They have their own semi zigbee implementation. And it's probably what they do to save battery life, because the battery life you know the reviews that I saw is months if not years longer than all other brands. But the amount of trouble I've had with these I would gladly replace the batteries every month over dealing with this. And I am not going to attach the Aquara hub to my network, just to connect all the sensors. At this point I am cutting my losses and completely replacing all of the sensors with known good brands. I learned a lesson not to save a buck and just bite the bullet and get something that's known good.Hopefully this helps others. Because if I would have saw reviews like this I would have followed them and stayed off of this brand. I just wish they would fix this and either allow the end user to select to follow the correct zigbee protocol and deal with shorter battery life.