---
product_id: 722396386
title: "Door and Window Sensor T1, Smart Home Security Device with Real-Time Alerts, Zigbee 3.0 Compatible, Works with HomeKit, Alexa, and Google Assistant"
brand: "aqara"
price: "HK$400"
currency: HKD
in_stock: true
reviews_count: 7
category: "Aqara"
url: https://www.desertcart.hk/products/722396386-door-and-window-sensor-t1-smart-home-security-device-real
store_origin: HK
region: Hong Kong
---

# Real-time alerts via HomeKit, Alexa & Google Assistant Zigbee 3.0 for seamless smart home integration 3V Lithium battery-powered for long-lasting use Door and Window Sensor T1, Smart Home Security Device with Real-Time Alerts, Zigbee 3.0 Compatible, Works with HomeKit, Alexa, and Google Assistant

**Brand:** aqara
**Price:** HK$400
**Availability:** ✅ In Stock

## Summary

> 🚪🔔 Stay ahead of intruders and never miss a moment with smart security that’s always on.

## Quick Answers

- **What is this?** Door and Window Sensor T1, Smart Home Security Device with Real-Time Alerts, Zigbee 3.0 Compatible, Works with HomeKit, Alexa, and Google Assistant by aqara
- **How much does it cost?** HK$400 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/722396386-door-and-window-sensor-t1-smart-home-security-device-real)

## 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

- • **Automate Your Lifestyle:** Trigger smart home scenes like lighting up your entryway the moment you walk in.
- • **Ultimate Smart Security:** Instant notifications keep you connected and in control, wherever you are.
- • **Multi-Location Versatility:** Discreetly monitor doors, windows, drawers, mailboxes, and even AC units.
- • **Cross-Platform Compatibility:** Works flawlessly with Apple HomeKit, Alexa, Google Assistant, and Matter ecosystems.
- • **Effortless Setup & Integration:** Plug into your Aqara Hub and enjoy smooth, reliable performance with minimal fuss.

## Overview

The Aqara Door and Window Sensor T1 is a compact, battery-powered contact sensor that integrates via Zigbee 3.0 with major smart home platforms including Apple HomeKit, Alexa, and Google Assistant. Designed for versatile placement beyond doors and windows, it enables real-time alerts and home automation through the Aqara Hub, enhancing security and convenience for modern smart homes.

## Description

Aqara Door and Window Sensor T1

Review: Great! - Easy to setup. Integrates well with home assistant. Easy.
Review: A neat versatile window/door switch. - Simple to install, works perfectly.

## Features

- This item requires connection to an Aqara Hub to function
- A Smart Sensor with Maximum Versatility: For an added convenience and peace of mind, you will be able to install this tiny sensor not only on the doors and windows, but also into the drawers, mailboxes, and even AC units to achieve.
- Multi-Ecosystem Support: After binding it to an Aqara hub, the sensor can be exposed to third-party platforms, such as Apple Home, desertcart Alexa, Google Home, and even Matter.
- Aqara Home Automations: You can trigger different scenes and automations with our suite of smart home products. For example, when you open the door in the evening, the Aqara Door and Window Sensor T1 will send a signal to the Aqara Wall Switch to turn on the lights. No matter how late you get home, the lights will automatically turn on.
- Security Notifications: With the Door and Window Sensor T1, you can turn on alarm mode when you leave the house or when you are asleep. If a door or window is opened, the Hub will sound an alarm and send a notification to your phone.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery description | Lithium |
| Number of batteries | 1 Lithium Metal batteries required. (included) |
| Voltage | 3 Volts (DC) |
| Control method | App |
| Mounting type | Can be attached to the wall or other surfaces |
| Sensor technology | Contact Sensor |
| UPC | 192784001240 |
| Manufacturer | Lumi United Technology Co., Ltd |
| Part Number | DW-S03D |
| Product Dimensions | 2.2 x 1.5 x 4.1 cm; 25 g |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Item model number | DW-S03D |
| Item Package Quantity | 1 |
| Included Components | Sensor Unit × 1 Magnet Unit × 1 User Manual × 1 |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
| Item Weight | 25 g |

## Product Details

- **Colour:** White
- **Brand:** Aqara
- **Power source:** Battery Powered
- **Compatible devices:** Smartphone, Tablet
- **Product dimensions:** 22L x 15W x 41H millimetres

## Images

![Door and Window Sensor T1, Smart Home Security Device with Real-Time Alerts, Zigbee 3.0 Compatible, Works with HomeKit, Alexa, and Google Assistant - Image 1](https://m.media-amazon.com/images/I/61IV7Ll7OGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great!
*by M***N on 24 January 2026*

Easy to setup. Integrates well with home assistant. Easy.

### ⭐⭐⭐⭐⭐ A neat versatile window/door switch.
*by D***E on 19 November 2025*

Simple to install, works perfectly.

### ⭐⭐⭐⭐⭐ Review
*by J***E on 9 June 2025*

-Je ne voulais pas particulièrement d'aqara (pour ne pas ajouter une nouvelle marque à mon réseau), mais le sonoff est trop gros à mon gout avec aqara seul à ce niveau de prix et ce niveau de rapport qualité prix (exit Moes, Nous et co qui fonctionnent quand ça veut). Sans surprise c'est parfait, réactivité instantanée à l'ouverture, mois d'1 seconde à la fermeture. -Ajouté à home assistant via zha en 1 clic avec le niveau de batterie et les variables de qualité réseau/connectivité zigbee remontées. C'est mis à la va-vite vite sur la porte pour le test, je pense qu'il y a moyen de cacher le capteur sous la porte avec la partie fixe montée perpendiculairement. On est pas dans le gadget me concernant car il m'arrive "régulièrement" de mal fermer ma porte de congélateur (j'ai une alerte home assistant à 2 min d'ouverture de porte) ... -Aussi, je confirme que la partie mobile du capteur est aimantée (et scotch double face fourni malgré tout pour cette partie). edit : si vous avez l'impression que le capteur se met en position "ouvert" avant l'ouverture physique de la porte, c'est parce-que c'est le cas (les 2 clips sont biens synchronisés). Là ou j'ai placé l'aimant, les 2 ou 3mm ou je tire sur la porte (avec l'accordéon de la porte du congélateur qui compense physiquement la déformation) suffisent à activer le capteur.

## Frequently Bought Together

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-20*