AqaraZigbee 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

This is a very small sensor, glues to the door and frame without any cable, looks slick and you can't even notice it on a white door. This door sensor is made well, solid plastic with a premium feel to it. I have been using 5 of these on my doors, connected to the Aqara app but they sync with Home Apple via the Aqara app. After 1 year, the battery is still good, not sure how much more I can ask. You can set up alerts and automations with the sensor in Aqara app and home app, showing you only "open" or "close". Connecting them is easy, push the small Botton for 5 seconds and wait to be connected. I recommend this sensor if you already have other Aqara products or need something with Apple HomeKit integration. Note that these sensors won't pair with Ecobee termostats, if you want to turn off the AC when the doors are open, Ecobee makes you buy their own sensors and pay them a monthly fee. If you use the Aqara app, you have access to a chart of when the door was open and closed. In Home App, you can only see if it's opened or closed and an activity history under the Security tap. Pictures attached on how it looks.Overall, I have been very happy with these sensors, great price and they do the job well without requiring battery every few months. Note that this device connects using some radio signal rather than Wifi, so you need a Aqara base, or Aqara camera to use them. The protocol is called Zygbee or something like that.

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!

⭐️⭐️⭐️⭐️⭐️ 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.

I've been using one for two years, and it (almost) works fine. But:1) The output bounces a lot. I attached it to a gate and tried to program it to run one automation when the gate opens and another when the gate closes. However, when the gate opens, rather then receiving a single 'open' message, I received 'open', 'closed' . . . 'open', 'closed', 'open' messages over a fraction of a second, causing both automations to run simultaneously. Same when I close the gate.2) It occasionally disappears from the ZigBee network, for no known reason. I then need to remove it from the gate, put it back into pairing mode, and have the ZigBee coordinator re-attach to it. It wouldn't be that big a deal except for the fact that it is embedded in the gate and is difficult to remove.