---
product_id: 537683240
title: "Door and Window Sensor P2, Contact Sensor with Remote Alarm | Matter Over Thread, Requires 2-in-1 Matter Controller & Thread Border Router, Supports Apple Home, Alexa"
brand: "aqara"
price: "$57.98"
currency: USD
in_stock: true
reviews_count: 13
category: "Aqara"
url: https://www.desertcart.us/products/537683240-door-and-window-sensor-p2-contact-sensor-with-remote-alarm
store_origin: US
region: United States of America
---

# Local automation without cloud Long-lasting CR123A battery Matter over Thread connectivity Door and Window Sensor P2, Contact Sensor with Remote Alarm | Matter Over Thread, Requires 2-in-1 Matter Controller & Thread Border Router, Supports Apple Home, Alexa

**Brand:** aqara
**Price:** $57.98
**Availability:** ✅ In Stock

## Summary

> 🔐 Elevate your smart security game with Aqara P2 — where precision meets privacy.

## Quick Answers

- **What is this?** Door and Window Sensor P2, Contact Sensor with Remote Alarm | Matter Over Thread, Requires 2-in-1 Matter Controller & Thread Border Router, Supports Apple Home, Alexa by aqara
- **How much does it cost?** $57.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/537683240-door-and-window-sensor-p2-contact-sensor-with-remote-alarm)

## Best For

- aqara enthusiasts

## Why This Product

- Trusted aqara brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Privacy-First Automation:** Run advanced automations locally—no cloud needed, ensuring your data stays private and reliable.
- • **Voice-Enabled Monitoring:** Hands-free status updates and alerts via Siri, Alexa, and Google Assistant keep you effortlessly informed.
- • **Precision Security Alerts:** High-precision Hall sensor delivers instant open/close notifications wherever you are.
- • **Seamless Matter Integration:** Unlock true smart home synergy with native Matter support across Apple, Google, Alexa & more.
- • **Effortless Setup & Endurance:** Compact design with adhesive mount plus a powerful CR123A battery for months of uninterrupted protection.

## Overview

The Aqara Door and Window Sensor P2 is a cutting-edge contact sensor featuring native Matter support over the Thread protocol, enabling ultra-reliable, low-latency connectivity with major smart home ecosystems like Apple Home, Google Home, and Alexa. Equipped with a high-precision Hall sensor, it provides real-time open/close alerts and supports local automations that run without cloud dependency, enhancing privacy and reliability. Voice assistant compatibility and easy adhesive installation make it a seamless addition to any smart home, powered by a long-lasting CR123A battery for continuous security monitoring.

## Description

Buy Aqara Door and Window Sensor P2, Matter Over Thread, Requires Thread Border Router, Contact Sensor with Remote Alarm and Local Automation, Supports Apple Home, Google Home, Alexa: Hubs & Controllers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great product - 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
Review: Five stars...after some issue resolutions - These are wonderful, but you have to do a few things if you're having issues. I tried connecting one and it was not working at all. So I tried to set up another and the same thing happened. Since both were not working I figured it was something with my network. Turns out my mesh router (Google Nest Wifi Pro) was conflicting with my router (whatever ATT gave me). The ATT router had its WiFi signals enabled for 2.4Ghz and 5Ghz so when the set up was happening, it was picking up both WiFi connections from my phone. I disabled the signals from the ATT router, and they still weren't working, but I wanted to try a third just in case, and it magically connected easily. Since that started working, I wanted to troubleshoot the other two that were still having issues. I figured hat during the setup, the devices remembered the settings so I needed a way to reset them and start fresh. I saw a video from their YouTube account that you can factory reset if you press the button 10 times. Once I did that, both connected easily. I bought 13 of these and never had an issue setting up the other 11 after the network issue / factory reset took place. They are easy to set up and don't get in the way. Finally I used the extra magnets that came with each device on my fridge, lol.

## Features

- [Native Matter Support over Thread] As one of the first sensors to support Matter, the P2 supports access to Aqara Home, Apple Home, Google Home, desertcart Alexa and Samsung . Meanwhile, as a sensor based on the Thread protocol, the P2 provides enhanced connectivity, low-power consumption, more stability, and low latency. (**Note: 2-in-1 Matter Controller & Thread Border Router is required and sold separately)
- [Open/Closed Status Monitoring] With a built-in high-precision Hall sensor, the Aqara Door and Window Sensor P2 can detect the opening and closing status of doors, windows, and drawers precisely. Once the sensor is triggered, it will send real-time alert notifications to your smartphone whether you're at home or away, ensuring you're always aware of any potential security concerns. (*Note: To ensure a stable connection, place the Door and Window Sensor P2 main unit between the accessory unit is no more than 22 mm )
- [Local Home Automations] You can integrate the Door and Window Sensor P2 with your smart home ecosystem to enable advanced automations like adjusting thermostat settings or activating security cameras when a door or window is opened. Moreover, the automations are executed without the cloud, which can protect the user’s privacy and will keep working even if there is no internet connection.
- [Voice Alerts and Status Notifications] The Aqara Door and Window Sensor P2 supports Apple Siri, Alexa, and Google Assistant. With these voice assistants, you can receive alerts about events such as door entries, or ask whether a door is open, allowing you to effortlessly monitor your home.
- [Matter Compatibility] A Matter Controller & Thread Border Router 2-in-1 is required to enjoy seamless integration with a Matter-enabled smart home ecosystem. Currently, the following hubs are tested, but new hubs will be added over time. Aqara Home(Hub M3), Apple: Apple TV 4K (3rd gen, 128 GB), Apple TV 4K (2nd gen), HomePod (2nd gen), HomePod mini | Samsung: Hub v3, Aeotec Hub v3, | desertcart: Echo (4th gen) | Google: Nest Hub (2nd gen), Nest Hub Max, Nest Wi-Fi Pr
- [Easy Installation & Long Battery Life] With its compact design and adhesive back, the sensor is easily integrated into any interior. Additionally, equipped with a powerful CR123A battery, it provides uninterrupted protection with infrequent replacements.* The battery life may vary depending on the border router and Matter app the sensor is connected to. Please ensure to use a CR123A battery when replacing, as incompatible models may cause failure or malfunction.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BTL8B72D |
| Best Sellers Rank | #17,628 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #27 in Home Automation Hubs & Controllers |
| Brand | Aqara |
| Brand Name | Aqara |
| Customer Reviews | 3.8 out of 5 stars 1,067 Reviews |
| Included Components | Sensor Accessory Unit × 1 |
| Item Dimensions | 3.03 x 1.32 x 0.87 inches |
| Item Type Name | Door and window sensor |
| Item Weight | 0.04 kg |
| Item dimensions L x W x H | 3.03 x 1.32 x 0.87 inches |
| Manufacturer | Lumi United Technology Co., Ltd |
| Model | DW-S02E |
| Mounting Type | Door Mount |
| Part Number | DW-S02E |
| Specific Uses For Product | home security, smart home integration, voice assistant integration |
| Style | Door and Window Sensor P2 |
| Style Name | Door and Window Sensor P2 |
| UPC | 192784000847 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Warranty |

## Product Details

- **Brand:** Aqara
- **Item Weight:** 0.04 Kilograms
- **Item dimensions L x W x H:** 3.03 x 1.32 x 0.87 inches
- **Mounting Type:** Door Mount
- **Style:** Door and Window Sensor P2

## Images

![Door and Window Sensor P2, Contact Sensor with Remote Alarm | Matter Over Thread, Requires 2-in-1 Matter Controller & Thread Border Router, Supports Apple Home, Alexa - Image 1](https://m.media-amazon.com/images/I/612VSU7yrgL.jpg)

## Questions & Answers

**Q: Does this product come with a 2-in-1 Matter Controller & Thread Border Router?**
A: No, 2-in-1 Matter Controller & Thread Border Router is required and sold separately

**Q: How can I ensure a stable connection for the Door and Window Sensor P2?**
A: To ensure a stable connection, place the Door and Window Sensor P2 main unit between the accessory unit is no more than 22 mm .And make sure the Door and Window Sensor P2 and the router are connected to the same local area network (LAN).

**Q: What type of battery should I choose for this sensor?**
A: To ensure optimal performance, please ensure to use a CR123A battery when replacing, as incompatible models may cause failure or malfunction.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by W***D on June 24, 2026*

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

### ⭐⭐⭐⭐⭐ Five stars...after some issue resolutions
*by M***Y on July 15, 2024*

These are wonderful, but you have to do a few things if you're having issues. I tried connecting one and it was not working at all. So I tried to set up another and the same thing happened. Since both were not working I figured it was something with my network. Turns out my mesh router (Google Nest Wifi Pro) was conflicting with my router (whatever ATT gave me). The ATT router had its WiFi signals enabled for 2.4Ghz and 5Ghz so when the set up was happening, it was picking up both WiFi connections from my phone. I disabled the signals from the ATT router, and they still weren't working, but I wanted to try a third just in case, and it magically connected easily. Since that started working, I wanted to troubleshoot the other two that were still having issues. I figured hat during the setup, the devices remembered the settings so I needed a way to reset them and start fresh. I saw a video from their YouTube account that you can factory reset if you press the button 10 times. Once I did that, both connected easily. I bought 13 of these and never had an issue setting up the other 11 after the network issue / factory reset took place. They are easy to set up and don't get in the way. Finally I used the extra magnets that came with each device on my fridge, lol.

### ⭐ Aqara P2 Contact Sensor – Disappointing Reliability for a “Next-Gen” Matter Device
*by R***K on July 14, 2025*

I’ve been a long-time Aqara customer with over 35 Aqara products at home — including switches, cameras, and sensors. The original Aqara Zigbee contact sensors have worked flawlessly for years. That history of reliability is what led me to purchase four Aqara P2 Contact Sensors, which use Matter over Thread. Unfortunately, the P2 has failed to meet expectations. Constant Disconnections: After just a few months, the P2 sensors started disconnecting from Apple Home. Unlike Zigbee devices, which reconnect automatically after outages, the P2 requires a manual factory reset and re-pairing. This means removing it from Apple Home and rebuilding every associated automation and shortcut. This disconnection occurs roughly every two months or after internet outages, even though Matter and Thread are supposed to be local protocols. Other Matter and Zigbee devices recover just fine — only the P2 fails consistently. Battery Drain Issues: One of my P2 sensors showed 0% battery. After inserting a new CR123A battery, it dropped to 25% within a day and 0% by the next. Another fresh battery dropped to 75% in minutes. I contacted Aqara support, who attributed it to residual power and advised removing the battery, holding the reset button for 5 seconds, then reinserting it. This did not resolve the issue. Poor Customer Support: Support requires emailing Aqara and waiting 3–4 business days between responses. After weeks of following scripted troubleshooting steps, they concluded that my device was out of warranty and that I would need to purchase a new one. Given the issue appeared after a battery change, this response was especially frustrating. Final Verdict: The Aqara P2 Contact Sensor is unreliable, difficult to reset, and not ready for real-world use. If you’re heavily invested in automations or HomeKit, you’re better off with: • Aqara’s original Zigbee contact sensors, which are far more stable • Or Eve’s Matter-compatible contact sensors, which have performed far more reliably The P2 is not worth the time or effort. Aqara’s implementation of Matter is still too immature for a critical-use sensor.

## Frequently Bought Together

- Aqara Door and Window Sensor P2, Matter Over Thread, Requires Thread Border Router, Contact Sensor with Remote Alarm and Local Automation, Supports Apple Home, Google Home, Alexa and SmartThings
- Aqara Smart Hub M3 for Home Automation, Matter Controller, Thread Border Router, Features Zigbee, Bluetooth, Wi-Fi, PoE, IR, Supports Alexa, Apple HomeKit, SmartThings, IFTTT

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-27*