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🚪🔔 Stay ahead of every open door moment—smart security that speaks your language!
The THIRDREALITY Zigbee Contact Sensor is a compact, plastic door/window monitor designed for seamless integration with Zigbee hubs and Echo devices with built-in Zigbee. It offers a 2-year battery life powered by two AAA batteries, supports OTA firmware updates, and enables customizable Alexa routines for real-time alerts and automation. Compatible with major smart home platforms like SmartThings, Home Assistant, Aeotec, and Hubitat, it ensures hassle-free setup and reliable monitoring for indoor use.


























| ASIN | B08R9PH4JT |
| Best Sellers Rank | #24,600 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #55 in Home Automation Hubs & Controllers |
| Brand | THIRDREALITY |
| Brand Name | THIRDREALITY |
| Customer Reviews | 4.3 out of 5 stars 775 Reviews |
| Included Components | AAA Battery × 2, Door Sensor, Double-sided Tape, Screws |
| Item Dimensions | 1.97 x 0.83 x 2.36 inches |
| Item Weight | 2.08 ounces |
| Item dimensions L x W x H | 1.97 x 0.83 x 2.36 inches |
| Manufacturer | Third Reality, Inc |
| Material | Plastic |
| Material Type | Plastic |
| Model | P1DSA2 |
| Mounting Type | Door Mount |
| Number of Items | 1 |
| Output Type | Push Button |
| Part Number | 3RDS17BZ |
| Style | Door Sensor |
| Style Name | Door Sensor |
| UPC | 850001595285 |
| Unit Count | 1 Count |
�**R
I was happy with it, then it went haywire, then it returned to working properly
Updated review 11/14/22 and reinstated 5 star rating: Apparently, during the last week or so of October 2022, there was a software issue of some sort between this device (contact & motion sensors) and my Echo Show. I think it was a zigbee issue. A lot of users of zigbee-enabled devices complained about it on reddit. I don't know the exact problem because it's all hush-hush, keep the customer uninformed. Apparently, it was corrected by Amazon after approximately one week. My Third Reality zigbee contact and motion sensors all work beautifully at the moment. Until the next glitch, of course. I reinstated my original 5 star rating because I really like how these devices work for me (except for the glitches, of course). ----------------- Updated review 10/31/22 and 1 star rating: It worked great, until it didn’t. It disconnected from Alexa and won’t reconnect. The sensor itself works. The red light lights up when the door is open, but what good is a sensor when Alexa can’t tell you the door is open? ——————— Original review 10/13/22 and original 5 star rating: This device works with my Echo Show with zigbee. I asked Alexa to "find my device" and she did. I didn't need any other hub, app, or skill, and I like that it's not wifi. I purchased a couple to use on interior doors at night so I know if a door opens or not. I set up an Alexa routine. In my house, Alexa announces the door is open within 3 seconds of opening the door. There is no down or recovery time. It'll work again within seconds. I'm very happy with it and its easy integration via zigbee with the Alexa app.
J**S
Solid and versatile product from 3R
Bought this to use in conjunction with a palm vein smart lock to monitor door status and enable routines. Super easy pairing through Hubitat, and I was able to configure it alongside the lock to lock/unlock based on the status of the sensor AND prevent errant locking when the door was closed and then quickly opened again (HUGE bonus). Don't know about the battery life yet, but I don't anticipate having to change them anytime soon.
T**B
Works great!!!
Tried them all with SmartThings. THIS ONE, while a bit larger than most, just keeps working. 2 AAA batteries truly lasts a long time. Batteries are also common and cheap. Can't stress that enough. I'm so over those round flat types that last maybe 6 months at best. Due to the molding around the door, there is quite a big gap. But this sensor has no problem at all with that. This is my new go to door sensor for my system.
R**H
Works excellent with my HomeSeer system!
I added this to my HomeSeer system using their free Zigbee Plus plugin. The sensor added easily without an issue. HomeSeer displays the contact value (whether the door is open or closed), the battery level, and the link quality. The link quality is handy as this lets you know if it has a good connection to the hub. I use this on my inside garage door. When I come home and open that door, I have an automation event that turns on the hallway lights. I only turn on the lights if I enter the home, not when I leave. I use a motion sensor in the hallway to detect that I am approaching the door from the inside. The automation will not turn on the lights if motion is detected. Pretty neat. I cannot comment on battery life yet, but it's been a few weeks and it still shows 100%. The sensor is activated multiple times a day. They include double sided tape to attach it to the door and the door jamb. Seems like its staying attached well.
C**A
Good Wyze Sensor Replacement
SIZE: Smaller than expected, it was described in millimeters, and the conversion just didn't work in my head (30mm = 1.1811inches)??? Now I can carry it with me and see what it fits into. SETUP: It was easy to connect to the Samsung SmartThings app. It reports actions very quickly, like within a few seconds, versus Wyze, which took at least 10 seconds. PLAN: Now need a way to make it waterproof so it can be used on the mailbox. The goal is to replace the Wyze contact sensor, which gave me a notification that the mailbox had been opened when mail was delivered.
A**H
Look somewhere else
Don't waste your money. Range is really bad and will give false readings all the time. I took it back.
H**G
Quick inclusion to Hubitat
Mounted on garage doors. Easy to set up on Hubitat.
T**T
Reliable and Easy to Use!
I added a couple of these THIRDREALITY Zigbee contact sensors to my smart home setup and they work flawlessly. Pairing with Home Assistant was quick and easy, and they respond instantly when a door is opened. The battery life has been great so far, and the build quality feels solid. Perfect for peace of mind and home automation. Highly recommend!
R**.
It's flawless I love it
Yes, this is great! Connectivity, ease of use, and appearance. I would buy so much more. For every window, every door, every closet, every cupboard, every toilet lid, EVERYTHING. Anyways, thanks for making this.
D**R
Deursensor Ring
Het item voldoet volledig aan de eisen
K**N
Works with SmartThings
Works with SmartThings It keep saying trying pair but already paired in the background. No issue
B**O
Muy buen sensor
Funciona de lujo, raros son los que pueden tener tal espacio de detección. Además, usando pilas normales, fácil cambiarlas y recargarlas. La única pega es que usando pilas normal, pues es un poco más grande, claro.
D**L
Top
Einrichtung mit homeassistant hat problemlos funktioniert. Verbindung zu Router ohne Probleme. Somit Aussage einer 2 Sterne Rezension dass kein mesh möglich ist schlicht falsch. Sendet Zustand permanent nicht nur wie Sensoren anderer hersteller beim Öffnen oder schließen. AAA Batterie kann leicht gewechselt werden. Einziger Nachteil ist dass er etwas größer ist wegen der Batterien aber das ist aufgrund dass Daten alle paar Minuten gesendet werden verständlich. Hab noch nichts besseres gefunden und schon viele Sensoren ausprobiert.
Trustpilot
1 month ago
2 weeks ago