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 have an August lock that is supposed to provide some "door ajar" alerts. It never does, and the sensor does not integrate well with HomeKit. Recently, I put down a door mat that catches on my door and leaves it open, and I've had a few times where I've left the house and left my door wide open because I'm used to it closing behind me. I already have a few Aqara sensors around my house for leak detection, and a door sensor on a deck door that is harder to close and can get left ajar accidentally, so I decided to get another sensor for my front door. This sensor is perfect! It was easy to setup and get connected to my existing Aqara hub, and it works very well with HomeKit. I get notifications every time the door is open or closed, and in addition, priority alerts when the door is left open past my timeout setting (two minutes). Installing it was also a breeze, and one of the sensor parts is small enough that it fits on my recessed doorframe with just enough distance between the sensors for it to be effective detecting opening and closing. My Zigbee hub is close by, so it does not need to communicate over a long distance, which should probably help with battery life - however, the sensor on my other door is on a second floor and it communicates perfectly, and I have only had to replace its battery twice. I continue to be pleased with the Aqara ecosystem!

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.

I heard about this from a YouTube review of the best door sensors for a smart home. Only $18, why not give it a try? You don’t need an Aqara hub. Any Zigbee coordinator (like Sonoff USB plus, Conbee, etc.) that you have installed in Home Assistant or similar automation system should work fine. I’m using with the Sonoff USB plus as my Zigbee coordinator. The Aqara door sensor pairs instantly and configured in less than a minute. Installed on pantry doors. This was a bit tricky as I installed on the inside of the doors, so they would not be visible from outside. I had to try multiple locations (need to ensure magnet and sensor are close together at the proper height relative to one another) but finally got the location right (used scotch tape to test/identify best location, then I used the included stickers to attach the sensor and magnet directly to the pantry door interior, once I knew the proper positioning). Directly outside the pantry is a ceiling light that is controlled by a smart light switch (also integrated into Home Assistant). I config’d an automation so when the pantry doors are opened (door sensor detects motion), the smart light switch activates the ceiling light. When pantry doors are closed (door sensor detects the magnet has come close to the sensor again), the smart light switch shuts off the ceiling light. This works great to make it easy to see contents of the pantry, and we don’t need to bother with manually turning the light on/off anymore. We used to sometimes leave the light on accidentally/forget to turn off. Not anymore! Thanks Aqara and Home Assistant.

I bought these because they're incredibly tiny and Aqara has a good reputation for seamless integrations with Home Assistant. (I don't use an Aqara hub or Alexa.) Pros: - They're very unintrusive. Being so small and rounded, you hardly even notice them. - Native Zigbee, so super low power and no proprietary hub needed. - Battery life, at least so far, has been decent: reporting about 65% after six months of use. Cons: - They were harder to connect than other Zigbee devices, requiring me to bring them very close to a relay or, if I'd already attached them to the door, plugging in a Zigbee outlet nearby temporarily. - They tend to disconnect slightly more often than other Zigbee devices, even in areas with very strong mesh coverage. Ultimately, I decided to go with Sonoff instead for the rest of alarmed doors. They're quite a bit larger, and the boxy shape catches the eye more, but they're much more reliable. And for something connected to my home security system, reliability is king. For interior doors that don't matter so much, I prefer these for their small size. They're great for non-critical automations like turning on the bathroom fan when the door closes, or adjusting thermostats depending on which doors are open.

I have a full smart home with a variety of products that I use SmartThings with. I purchased this with only some research. After receiving it and trying it out, I have some things to point out: DISCLAIMER: This is NOT a plug and play device and requires knowledge of device handlers or the desire to learn about them. PAIRING: I had issues with this at first. When it says to hold the small button down for 5 seconds, it means 5 seconds, no more, no less. This fixed the issue. SMARTTHINGS APP: Use the "Scan for nearby devices" option. Follow the 5 second rule stated above. The item comes up as "thing." That is fine, there are more steps, don't fret about all that. SMARTTHINGS IDE: First, if you don't know how to add a Device Handler, there are plenty of references online. For the code required for this device, simply Google: Xiaomi Original & Aqara Device Handlers. It is available on Github. Change the device type to your new self published device handler. Again, there are a bunch of references online for this. CONNECTION LOSS: I have not experienced any from a firmware stand point. If you are having this happen, buy some Zigbee plugs to extend your network. I have tested for network loss for a week and did not experience any. In the phone app, it may say report a network loss but my experience is that it was not reporting correctly. If you want to test this, add notifications for this device. For me, it alerted me every time. MODIFICAITONS: I am using a recessed contact that I soldered to the magnet. It works great and allows me to hide the actual door contact and have the device sit on top of the trim. You can search for this device by name followed by the word "Teardown" RECOMENDATION: I am not paid or compensated in any way to write this review. I just did not care for everyone's claim that this product is not worth it. It is not expensive and works fine. WILL I BE RE-PURCHASING? Well, they just raised their prices by $3 USD, to $17.99, and if they lower back down I will buy more. There are other similar devices out there that work with a similar work around.

THESE ARE GREAT LITTLE SENSORS. I BOUGHT MULTIPLE. WORK PERFECT FOR WHAT I NEED THEM FOR. BATTERY LIFE IS GREAT.

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.

Simple and very well priced. I used this sensor to notify me when my toddler leaves their bedroom in the middle of the night. They've just transitioned from crib to bed so we are still adjusting to the possibility they can get up i the middle of the night to use the bathroom unsupervised and we wanted to keep a closer eye for the first few weeks.