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

⭐️⭐️⭐️⭐️⭐️ 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.

Anything from Aqara is great. I have these on doors, our mailbox and even our washing machine lid. They are super reliable and never fail. Pair directly to Home Assistant and run any automation. Battery life is long enough that I cant keep up with how long they last

A bit finnicky to setup initially, but I have them on all my doors now, and they seem to work perfectly well with my SLZB-06M coordinator, without any Agara hubs.

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.

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'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.

Great product