---
product_id: 475389727
title: "Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required"
brand: "thirdreality"
price: "₩4018628"
currency: KRW
in_stock: true
url: https://www.desertcart.kr/products/475389727-zigbee-contact-sensor-4-pack-door-and-window-monitor-works
store_origin: KR
region: South Korea
---

# Hassle-free instant setup Zigbee standard compatible 2-year battery life Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required

**Brand:** thirdreality
**Price:** ₩4018628
**Availability:** ✅ In Stock

## Summary

> 🔐 Stay ahead of the curve—secure smarter, live better.

## Quick Answers

- **What is this?** Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required by thirdreality
- **How much does it cost?** ₩4018628 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/475389727-zigbee-contact-sensor-4-pack-door-and-window-monitor-works)

## Best For

- thirdreality enthusiasts

## Why This Product

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

## Key Features

- • **Long-Lasting Power:** Up to 2 years of reliable battery life with easy AAA replacements—set it and forget it.
- • **Smart Alexa Routines:** Trigger lights, alerts, or even jokes when doors/windows open—turn security into smart convenience.
- • **Instant Setup, Zero Stress:** Get your sensors up and running in seconds with Alexa’s voice discovery—no tech headaches here.
- • **Seamless Zigbee Integration:** Effortlessly syncs with top smart hubs like Echo, SmartThings, and Home Assistant for a truly connected home.
- • **Real-Time Monitoring & Alerts:** Track battery levels and sensor history via the Third Reality app, plus get low battery warnings by email.

## Overview

The THIRDREALITY Zigbee Contact Sensor 4 Pack offers seamless compatibility with major Zigbee hubs and Echo devices, delivering up to 2 years of battery life per sensor. Designed for quick, hassle-free installation, it empowers users to create smart home routines via Alexa and monitor sensor status through the Third Reality app, making home security smarter and effortlessly connected.

## Description

Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required

## Features

- ZIGBEE STANDARD COMPATIBLE DOOR SENSOR: Works with compatible Zigbee hubs or Echo devices with Zigbee hub built-in. Such as Echo (4th Gen), Echo Plus (1st Gen and 2nd Gen), Echo Studio, Eero 6, Eero Pro 6, Home Assistant, SmartThings 2015/2018, Aeotec, Hubitat, Homey Bridge, Homey Pro, Third reality Hub and Third Reality Smart Speaker.
- HASSLE-FREE SETUP: Installs in a few seconds. Just make sure device in paring mode and compatible Echo device automatically discovers it by saying “Alexa, discover devices”.
- SUIT FOR MOSTLY DOORS AND WINDOWS OF THE HOUSE AND 2-YEARS LONG BATTERY LIFE: Door Sensor uses two AAA 1.5V Alkaline batteries for power, the batteries can last for up to 2 years and it is very easy to replace them. Note: Indoor use only and do not install the Door Sensor on metal door or window.
- MORE FUN WITH ALEXA ROUTINES: Using the Alexa app, create your own routines that are triggered When door or window is open, turn on a light, send an alert to your phone, let Alexa make a voice alarm or make a joke, etc.
- UPGRADED THIRD REALITY APP AND SKILL FUNCTIONS: Connected with Third Reality Hub/Speaker, you can check the battery level in the APP, then replace the batteries in time; history record is also open to the users, so you can know when the state of the movement has been detected and deal with it in time. Enabled Third Reality Skill in the Alexa APP, you will have a low battery warning by emails.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Third Reality, Inc |
| Part Number | 3RDS17BZ |
| Product Dimensions | 5 x 2.1 x 6 cm; 290 g |
| Batteries | 8 AAA batteries required. |
| Item model number | 3RDS17BZ |
| Colour | White |
| Style | Door Sensor 4 Pack |
| Material | Plastic |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Plug profile | Door Mount |
| Usage | Contact Sensor |
| Included Components | 4 x Door Sensors, 8 x AAA Batteries, 4 x Double Sided Tape, 8 x Screws |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Battery description | Alkaline |
| Average Battery Life | 2 	years |
| Item Weight | 290 g |

## Product Details

- **Brand:** THIRDREALITY
- **Item dimensions L x W x H:** 50 x 21 x 60 millimetres
- **Material:** Plastic
- **Item weight:** 0.29 Kilograms
- **Style:** Door Sensor 4 Pack

## Images

![Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 1](https://m.media-amazon.com/images/I/51j1EWmLzgL.jpg)
![Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 2](https://m.media-amazon.com/images/I/61qyBXDxouL.jpg)
![Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 3](https://m.media-amazon.com/images/I/71CHPZ0rW1L.jpg)
![Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 4](https://m.media-amazon.com/images/I/61clXHB1TAL.jpg)
![Zigbee Contact Sensor 4 Pack,Door and Window Monitor,Works with Home Assistant,SmartThings,Aeotec,Homey Bridge,Homey Pro,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 5](https://m.media-amazon.com/images/I/51swM5MeNrL.jpg)

## Frequently Bought Together

- THIRDREALITY Zigbee Contact Sensor 4 Pack, Door and Window Monitor, Home Automation,Works with Home Assistant,SmartThings,Aeotec,Homey,Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required
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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-22*