Door and Window Sensor P2, Thread, Requires Thread Border Router

I bought these to put on my office door and set up an automation so I get an alert on my phone whenever the door is opened while the room is shut. I also linked it to my Echo, so it announces “Get out, owner has been alerted” if someone opens the door. It works perfectly and triggers instantly. It’s ideal for when you have guests round — especially if they have kids who like to snoop — because you know straight away if someone opens the door. Easy to set up, reliable, and works great with Matter and Thread. A really solid contact sensor if you want proper smart‑home security and automation.

This is one of the first Thread- and Matter-based devices from Aqara. Thread devices are still fairly new to market and I've found that some other competing devices are quite buggy. This one was very straightforward and worked exactly as expected. The sensor is supplied with strong adhesive strips and also an optional magnet if required. I found the adhesive was more than sufficient to stick to the door and door-frame. Most older Aqara devices are Zigbee-based and need an Aqara hub, which acts as a Matter bridge to Apple Home, Alexa or Google Home. This sensor directly supports Matter-over-Thread, so no additional hub was required. Instead it connects wirelessly with my Apple TV which contains a Thread border router. Installation to Apple Home was a breeze; it paired very quickly after scanning the Matter QR code and then appeared in the Home dashboard. After that it was very easy to set up automations; I've set it to turn the kitchen heating off if the back door is open. The device responds almost instantly to opening and closing. Time will tell in terms of battery life. I wish all smart home devices were this simple!

I had heard good things about Aqara products, and had high hopes for these Matter-compatible sensors. I bought five of them to cover all our external doors, along with the Aqara M3 hub. Unfortunately, for me, this was a poor decision. I have a fairly extensive home automation setup based on Apple Home, and am knowledgeable about tech, but these sensors did not play ball. Once I had set up the M3 hub and installed the Aqara app I start the process of adding the sensors through the app as child devices. All five failed - they would be recognised by the app, but when adding them to the hub I repeatedly received an "other error: code 1" message. While this was far from promising, I decided that I would bind the sensors through Apple Home directly after setting up the hub as a bridge. While the sensors would bind, some after a few attempts, they failed at their primary function of detecting the opening and closing of the doors. Of course I double checked that I had fitted them according to the instructions with the required distance between sensor and contacts. Both the sensors I fitted detected the door opening and closing a couple of times, but after that the status did not change, one stuck on closed and the other open. I did not fit all five sensors after this and continued to struggle with the two I had fitted. I removed them from Apple Home, factory reset the sensors and tried again. One sensor then wouldn't bind at all, failing multiple times. The other bound first time, but once again stopped sensing the movement of the door. Ultimately I gave up struggling and decided to return all my Aqara kit. Despite other good reviews my experience means that Aqara is now a brand I don't trust to perform as intended.

My original Samsung Smartthings Multipurpose sensor worked intermittently for a number of years, but eventually failed. So I replaced it with a new one from Samsung's new supplier Aeotec. This was completely useless and took me an hour just to connect it to the Samsung hub. It worked intermittently for a day, so I returned it as unreliable. Instead, I bought the Aqara Door and Window Sensor P2 which worked perfectly. I started the Smartthings App, then pulled out the battery isolator tag from the Aqara device and the App recognised it straight away. I didn't even have to add a new device. I scanned the QR code and the device was installed automatically. I only had to specify which room I wanted it in. Works perfectly and only took a minute to install.

I have a number of Eve Door and Window sensors in my house but I thought I’d give this Aqara sensor a shot as it seemed to offer the same features for less money. It was simple to add the sensor to HomeKit and there was no need for a hub or a companion app. The two parts of the sensor have handy alignment marks that make it easy to position them for best results. So far, I’ve found this sensor more reliable than my Eve sensors, which occasionally go off line in HomeKit and need to be reset by removing the battery. My one complaint about Aqara’s sensor is that they are quite a bit larger than Eve’s equivalent and less discreet when installed. The battery powered half is about double the size and its pill shaped design seems at odds with square shaped door and window frames.

Did not work with SmartThings V1 Returned. May be fine with newer versions

Works well with AppleHome using Matter protocol. The magnet needs to stronger if using in a waterproof case on an external door/gate

I chose a Matter/Thread sensor as I did not want to have to buy and connect another hub. Only been using it for a few days but so far the sensor seems to work reliably. First of all I had difficulty pairing with Alexa app; the app indicated that I had a Thread network which I selected but the pairing failed. It turned out that I needed to turn on the Thread network in the Eero network settings (even though the Alexa app thought it was already there). After that all was fine and I was also able to pair it with Apple Home after first enabling HomeKit in the Eero app (which took a little time to figure out). So overall works well with an Eero router once you have the correct Eero settings.

No es un sensor confiable. Lo probe de muchas maneras y no logre que funcionara bien.

NOTE FOR APPLE TV USERS: Make sure that you have a Matter / Thread Hub type device like the 128 GB Apple TV - for some reason 64 GB Apple TV doesnt have the Matter hub in it. Assuming you have a Matter Hub - Works pretty good and connects very easily with Apple HomeKit so I didn't have to download the Aqara app. I will probably buy another for another door now!

Compré este sensor Aqara P2 para monitorear puertas y ventanas. Ha sido una adición perfecta a mi sistema domótico. ✅ LO BUENO: 🔐 Detección precisa - Identifica correctamente si una puerta o ventana está abierta o cerrada. Sin falsos positivos. Funciona exactamente como promete. ⚡ Respuesta rápida - La notificación llega casi instantáneamente a mi teléfono cuando se abre una puerta. Sin retrasos apreciables. 📱 Integración Matter - Compatible con Matter Over Thread, lo que lo hace futuro-proof. Funciona con HomeKit, Google Home y otros ecosistemas. 🔋 Batería duradera - Llevo 3 meses sin cambiar la batería. Autonomía excelente. El sensor avisa cuando la batería está baja. 📏 Diseño compacto - Es pequeño y discreto. No ocupa espacio ni desentonía. Se monta fácilmente con adhesivo o tornillos. 🔧 Instalación sencilla - Setup en minutos. No requiere configuración complicada. Cualquiera puede instalarlo. 🤔 CONTEXTO: Tengo 5 sensores en mi casa (puertas y ventanas principales). Todos funcionan perfectamente. Los uso para seguridad y automatización de luces. 👍 VEREDICTO: Si buscas sensores de puertas/ventanas fiables para tu casa inteligente, este es. Aqara tiene buena reputación y este producto la confirma. 💡 ¿PARA QUIÉN? ✅ Si tienes sistema domótico (HomeKit, Google Home, etc.)✅ Si quieres monitoreo de seguridad en puertas/ventanas✅ Si necesitas automatización basada en apertura/cierre✅ Si valoras confiabilidad y sencillez✅ Para integración con Matter/Thread ❌ Si no tienes hub domótico compatible❌ Si buscas algo ultra barato (hay opciones más económicas) ⭐ PUNTUACIÓN: Precisión: 5/5 ⭐⭐⭐⭐⭐Velocidad de respuesta: 5/5 ⭐⭐⭐⭐⭐Durabilidad batería: 5/5 ⭐⭐⭐⭐⭐Facilidad de instalación: 5/5 ⭐⭐⭐⭐⭐Compatibilidad: 5/5 ⭐⭐⭐⭐⭐Relación precio-valor: 4.5/5 ⭐⭐⭐⭐ 🎯 CONSEJOS DE INSTALACIÓN: ∙ Limpia la superficie antes de aplicar adhesivo ∙ Verifica la señal del hub antes de instalar ∙ Calibra el sensor si es necesario (solo toma segundos) ∙ Revisa la batería cada 6 meses 🏆 RECOMENDACIÓN FINAL: Compra estos sensores sin dudarlo. Son fiables, fáciles de instalar y funcionan perfectamente. Aqara es marca seria en domótica. Perfecto para casas inteligentes serias. ¡Muy recomendado! 🏠✨

Easy installation in service for several months now. Works great no issues. Will buy again. Matter over thread works seamlessly with Apple & Google Homes and Aqara matter controller

J’utilise principalement HomeKit, avec des appareils de différentes marques, et ce détecteur de porte Aqara P2 s’intègre parfaitement grâce à Matter. L’appairage est simple et rapide, et le capteur est immédiatement reconnu dans HomeKit sans difficulté. La détection est très réactive, aussi bien à l’ouverture qu’à la fermeture, ce qui le rend idéal pour les automatisations (notifications, éclairage, alarmes, etc.). La compatibilité Matter est un vrai avantage, car elle permet d’utiliser le capteur avec un écosystème multi-marques tout en conservant une excellente stabilité. Le capteur est discret, bien fini et inspire confiance côté qualité. Points positifs : ✔️ Compatibilité HomeKit native via Matter ✔️ Fonctionne parfaitement dans un écosystème multi-marques ✔️ Installation simple et rapide ✔️ Détection fiable et instantanée ✔️ Design discret et bonne qualité de fabrication Points négatifs : ❌ Nécessite un hub compatible Matter / Thread ❌ Un peu plus cher que les capteurs non Matter Conclusion : Un excellent détecteur de porte pour les utilisateurs HomeKit qui veulent une solution fiable, moderne et compatible avec plusieurs marques grâce à Matter. Très satisfait de ce produit.