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 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!

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!

sensors took a little bit to get synced , but work great and are small . they react quick , using door camera G410 as a hub

I have a Home Assistant Yellow Kit with Zigbee built-in and bought this because of the compatibility. It works great, but the syncing process is a little rough (and not described for non-hub usage in the instruction booklet). To get it to sync you have to hold the sync button for about 8 seconds while HA scans for new Zigbee devices, then when the light on the device begins flashing you need to take your finger off and start pressing it about once a second while HA fully initializes. Sometimes this takes a bit of time and often I have to try multiple times to pair a new one, however it's a pretty nice price point and it works very well once connected, so I'd say it's worth it!

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.

⭐️⭐️⭐️⭐️⭐️ Works Perfectly – Ideal for Mailbox Notifications!The Aqara Zigbee contact sensor exceeded my expectations. Home Assistant recognized it almost instantly—within less than a minute of pairing. It’s extremely responsive and reliable. I originally purchased it for its compact size, as I needed a small Zigbee sensor to fit inside my mailbox and notify me when mail is delivered. It’s absolutely perfect for that purpose. An added bonus is the built-in temperature sensor, which I didn’t realize I needed but now really appreciate. Overall, I highly recommend this sensor for anyone looking for a compact, responsive solution that integrates easily with Home Assistant.