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

The Aqara Door and Window Sensor Kit is a simple but highly effective smart home accessory. Setting it up was incredibly easy, especially if you're already using the Aqara Hub or a compatible smart home ecosystem like Apple HomeKit. Within minutes, I had these sensors installed and working perfectly.The sensors are small, discreet, and blend seamlessly with my doors and windows. They are very responsive—notifications are almost instant whenever a door or window is opened or closed. I also love how they integrate with other Aqara devices and automations. For example, I’ve set them up to turn on lights when a door is opened, and it works flawlessly.The battery life is excellent as well, and I appreciate the low-maintenance design. Plus, the adhesive backing makes installation a breeze without the need for screws or tools.If you’re looking for a reliable, affordable way to enhance your home security or smart home setup, the Aqara Door and Window Sensor Kit is an excellent choice. Highly recommended!

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!

I have about 30 of these sensors deployed between a couple of locations with Home Assistant and Zigbee2MQTT. They've been working without error for a year+ at this point. I've had...maybe three times I needed to visit a sensor to re-pair it to the Zigbee network. Fortunately, Z2M reports unavailable so I've never been surprised by a sensor being offline. Response times are incredibly quick, within a second. Battery life is excellent. Average of about 80% left on sensors that have been in service for a year. Included mounting stickers are more than sufficient. These live on some exterior doors and have gone through crazy temperature and humidity changes without issue.Overall, exceedingly pleased.

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.

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

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.