--- product_id: 461983830 title: "Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required" brand: "thirdreality" price: "€ 54.93" currency: EUR in_stock: true reviews_count: 13 category: "Thirdreality" url: https://www.desertcart.hr/products/461983830-zigbee-contact-sensor-door-and-window-monitor-home-automation-works store_origin: HR region: Croatia --- # Zigbee 3.0 compatible 2-year AAA battery life OTA firmware upgrades Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required **Brand:** thirdreality **Price:** € 54.93 **Availability:** ✅ In Stock ## Summary > 🚪🔔 Stay ahead of every open door—smart security that never sleeps! ## Quick Answers - **What is this?** Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required by thirdreality - **How much does it cost?** € 54.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/461983830-zigbee-contact-sensor-door-and-window-monitor-home-automation-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 - • **Hassle-Free Setup:** Plug-and-play installation with voice discovery—no tech headaches, just smart living. - • **Instant Smart Alerts:** Get real-time notifications and automate Alexa routines for ultimate home security. - • **Future-Proof Firmware:** Over-the-air updates keep your sensor cutting-edge without lifting a finger. - • **Ultra-Long Battery Life:** Powered by standard AAA batteries lasting up to 2 years—easy swaps, zero downtime. - • **Seamless Zigbee Integration:** Effortlessly pairs with Echo, SmartThings, Hubitat & more for a unified smart home. ## Overview The THIRDREALITY Zigbee Contact Sensor is a sleek, reliable door and window monitor designed for seamless integration with major Zigbee hubs and Echo devices. Featuring a 2-year battery life powered by standard AAA batteries, it supports instant alerts, Alexa routines, and OTA firmware updates. Its easy installation and compatibility with platforms like Home Assistant, SmartThings, and Hubitat make it a must-have for proactive, connected home security. ## Description Product Description Easy installation and Skill Functions THIRDREALITY Door Sensor Door and window sensor can directly work with compatible ECHO. You can monitor every door and windows in your home and create routines to send messages to your smartphone when the door or window is open. You also can create routines that are triggered by the on/off status of the door sensor. Remote Monitor Safeguard your home when you are on business or vocation, it will automatically push instant notification to your smartphone immediately. History Records In smartphone, you can see the history records of the smart door sensor. Open delay time Using the Smart Bridge MZ1(Sold separately) and the 3R-Installer App, you can customize the delay time to suit your preferences. Long Battery Life Using two AAA standard batteries, the batteries life can last for up to two years and very easy to replace. Protect the baby When you cooking in the kitchen, no more worrying about the baby will slip out of the safety fence. Send alert When you enjoy your voaction, no more worrying about someone will break in. History monitoring No more worrying about parents living alone forgetting or repeating their medication. Review: Great little sensors - I’ve been using these door/window contact sensors around the house for a few months now, and they’ve been great. I set them up to turn on cupboard lights when doors open, and to automatically turn on the hallway lights when the front door is opened at night. Once paired with my Zigbee setup (I’m running them through Home Assistant), the automations fire reliably and consistently, no lag or missed triggers. Installation was straightforward: the sensors are slim, powered by standard AAA batteries with up to ~2 years of life, and can be mounted with either the included adhesive tape or screws. Once connected they’ve stayed paired without any problems, and using regular batteries (rather than coin cells) makes swapping them out simple when needed. Overall these contact sensors have worked exactly as I’d hoped. They’re reliable, great value, easy to integrate into automations, and now a core part of my smart-home setup. Review: Pairs and OTA upgrade directly with Hubitat C7/C8/C8 Pro - Batteries Included - I bought 12 of these to replace all of another brand (S*O*N*O*F*F) which uses 2032 button cells, they paired with any of the Hubitat models within about 10-15 seconds whether they were 1m or 10m away. The driver it picked up was the built in Generic Zigbee Contact Sensor (no temp) They all needed an upgrade from 0x30 to 0x3F which was easily done via Hubitat within about 10mins, about 60 secs per 10% block, the progress can only be seen in the live logs for the Hub. This gives you: Optimized the network joining and reconnecting algorithms Optimized the power detection logic Optimized the trigger filtering algorithm From what I have experienced, the upgrade procedure is well protected and never bricked any of them, each 10% block is transferred and checksumed, at 100% the upgrade is transferred to its flash memory. The device still has live operation during the upgrade process. I made a mistake on the first one by unpairing/re-pairing while it was upgrading, simply because I did not realise anything was happening viewing the device page. When I found where I could see the progress, it had stopped at 30%, after 2 mins I realised the upgrade had been cancelled by my actions without any harm. The upgrade was just started again and completed without error. The great thing about these 3rdReality devices is that they use a modern hall effect sensor to trigger via the magnet instead of an antique reed switch, so they can be mounted offset slightly on windows and doors, the max detection range is about 25mm so best to stick with 15mm or less if the magnet is not on the same plane. As long as you dont have any poor/ chatty/ proprietary Zigbee protocol devices on the Hub and have good plug in repeater mains sockets between far off devices to create a good Zigbee mesh they operate automations in Rule Manager within a second , no matter how far away they are from the Hub. I am very impressed with this brand and have purchased 8 Temperature/Humidity lite sensors, again uses 2 x AAA supplied and also a couple of the waterproof soil moisture/temperature sensors to assist in the automated garden watering . ## 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 Show 8 Gen3, Echo Show 10 (Gen2 and Gen3).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 Bridge. - 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. - More Smart Assistant Supported: Enabled by Smart Bridge MZ1 (Sold Separately), integrates with Apple HomeKit, Google Home, desertcart Alexa (Smart Speaker required) and SmartThings, to achieve easy control and monitoring. Additionally, it supports software OTA (Over-The-Air) updates, allowing for effortless firmware upgrades ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08R9PH4JT | | Best Sellers Rank | 124,044 in DIY & Tools ( See Top 100 in DIY & Tools ) 103 in Home Security Door & Window Sensors | | Brand | THIRDREALITY | | Country Of Origin | China | | Customer Reviews | 4.3 out of 5 stars 877 Reviews | | EU Spare Part Availability Duration | 2 Years | | Included Components | AAA Battery × 2, Door Sensor, Double-sided Tape, Screws | | Item Dimensions | 50 x 21 x 60 millimetres | | Item Weight | 2.08 Ounces | | Item dimensions L x W x H | 50 x 21 x 60 millimetres | | Item weight | 2.08 Ounces | | Manufacturer | Third Reality, Inc | | Manufacturer Part Number | 3RDS17BZ | | Material | Plastic | | Maximum Supply Voltage | 1.5 Volts (DC) | | Maximum supply voltage | 1.5 Volts (DC) | | Measuring Range | Open - Gesloten | | Model Number | P1DSA2 | | Mounting Type | Wall Mount | | Output Type | Push Button | | Sensing Distance | 2 Metres | | Specific Uses For Product | home automation, indoor door/window monitoring | | Style | Door Sensor | | Style Name | Door Sensor | | UPC | 850001595285 | | Unit Count | 1.0 count | | Upper Temperature Rating | 50 Degrees Celsius | ## Product Details - **Brand:** THIRDREALITY - **Item dimensions L x W x H:** 50 x 21 x 60 millimetres - **Item weight:** 2.08 Ounces - **Material:** Plastic - **Style:** Door Sensor ## Images ![Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - Image 1](https://m.media-amazon.com/images/I/41-tjH1nx-L.jpg) ## Questions & Answers **Q: Will this work with samsung smartthings smart home hub 2nd generation?** A: A definite maybe! I bought one and did get it to work so I bought a second one. I have a 2nd gen Smarthings/ Aerotec hub. I could not get this one to work and spent 2 hours trying various solutions. The linking process could defiantly be improved. **Q: Will this contact sensor work with any tuya zigbee hub?. i need it to work with tuya or smart life app.** A: I'm using 5 3rd realty switches all via Zigbee hub....should work **Q: is the sensor affected by gravity - meaning - can I angle it, use it upside down, etc? thx!** A: Not affected by gravity (horizontal or vertical). I have sensors installed on doors and windows. It does not make a difference. They work in either orientation. Hope this helps. **Q: Is this UL 2017 approved?** A: Unable to confirm, not listed on the product or in the literature ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great little sensors *by D***Y on 12 January 2026* I’ve been using these door/window contact sensors around the house for a few months now, and they’ve been great. I set them up to turn on cupboard lights when doors open, and to automatically turn on the hallway lights when the front door is opened at night. Once paired with my Zigbee setup (I’m running them through Home Assistant), the automations fire reliably and consistently, no lag or missed triggers. Installation was straightforward: the sensors are slim, powered by standard AAA batteries with up to ~2 years of life, and can be mounted with either the included adhesive tape or screws. Once connected they’ve stayed paired without any problems, and using regular batteries (rather than coin cells) makes swapping them out simple when needed. Overall these contact sensors have worked exactly as I’d hoped. They’re reliable, great value, easy to integrate into automations, and now a core part of my smart-home setup. ### ⭐⭐⭐⭐⭐ Pairs and OTA upgrade directly with Hubitat C7/C8/C8 Pro - Batteries Included *by R***B on 5 January 2025* I bought 12 of these to replace all of another brand (S*O*N*O*F*F) which uses 2032 button cells, they paired with any of the Hubitat models within about 10-15 seconds whether they were 1m or 10m away. The driver it picked up was the built in Generic Zigbee Contact Sensor (no temp) They all needed an upgrade from 0x30 to 0x3F which was easily done via Hubitat within about 10mins, about 60 secs per 10% block, the progress can only be seen in the live logs for the Hub. This gives you: Optimized the network joining and reconnecting algorithms Optimized the power detection logic Optimized the trigger filtering algorithm From what I have experienced, the upgrade procedure is well protected and never bricked any of them, each 10% block is transferred and checksumed, at 100% the upgrade is transferred to its flash memory. The device still has live operation during the upgrade process. I made a mistake on the first one by unpairing/re-pairing while it was upgrading, simply because I did not realise anything was happening viewing the device page. When I found where I could see the progress, it had stopped at 30%, after 2 mins I realised the upgrade had been cancelled by my actions without any harm. The upgrade was just started again and completed without error. The great thing about these 3rdReality devices is that they use a modern hall effect sensor to trigger via the magnet instead of an antique reed switch, so they can be mounted offset slightly on windows and doors, the max detection range is about 25mm so best to stick with 15mm or less if the magnet is not on the same plane. As long as you dont have any poor/ chatty/ proprietary Zigbee protocol devices on the Hub and have good plug in repeater mains sockets between far off devices to create a good Zigbee mesh they operate automations in Rule Manager within a second , no matter how far away they are from the Hub. I am very impressed with this brand and have purchased 8 Temperature/Humidity lite sensors, again uses 2 x AAA supplied and also a couple of the waterproof soil moisture/temperature sensors to assist in the automated garden watering . ### ⭐⭐⭐⭐⭐ Long lasting on battery *by J***N on 23 October 2025* These are really good sensors, having 2 AAA batteries makes them more reliable. If you are using home assistant/z2m they aren't bindable ## Frequently Bought Together - THIRDREALITY Zigbee Contact Sensor, Door and Window Monitor, Home Automation, Works with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Build-in Zigbee Hub,hub Required - THIRDREALITY ZigBee Smart Plug 4 Pack with Real-time Energy Monitoring,15A Outlet, Zigbee Repeater,ETL Certified,ZigBee Hub Required,Work with Home Assistant,Compatible Echo Devices and SmartThings - THIRDREALITY Zigbee Motion Sensor, Pet Friendly, Compatible with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Built-in Zigbee Hub --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/461983830-zigbee-contact-sensor-door-and-window-monitor-home-automation-works](https://www.desertcart.hr/products/461983830-zigbee-contact-sensor-door-and-window-monitor-home-automation-works) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-18*