🏠 Stay connected, stay secure — the smart sensor your home deserves!
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 powered by AAA alkaline batteries. Designed for quick installation and smart automation, it supports Alexa routines, real-time alerts, and detailed monitoring through the Third Reality app. With OTA firmware updates and broad smart home integration, it’s the ultimate door and window sensor for a modern, connected lifestyle.
| Brand | THIRDREALITY |
| Power Source | Battery Powered |
| Mounting Type | Door Mount |
| Battery Description | Alkaline |
| Compatible Devices | Home Security System, Smartphone |
| Number of Batteries | 8 AAA batteries required. |
| Manufacturer | Third Reality, Inc |
| Part Number | 3RDS17BZ |
| Item Weight | 10.2 ounces |
| Product Dimensions | 1.97 x 0.83 x 23.62 inches |
| Country of Origin | China |
| Item model number | 3RDS17BZ |
| Batteries | 8 AAA batteries required. |
| Style | Door Sensor 4 Pack |
| Material | Plastic |
| Voltage | 2.3E+2 Volts |
| Usage | Contact Sensor |
| Included Components | Door Sensor × 4; AAA Battery × 8; Double-sided Tape × 4; Screw × 8 |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Description Pile | Alkaline |
C**X
Great contact sensor
Ordered one of these to replace my older, smaller version. This added easily to my network and has been working great. Seems to be very reliable
J**N
great sensors that work well with home assistant
Have multiple items from thirdreality in my HA setup. they always work well, pair easily and have awesome battery life
A**O
Recommended product
Excellent option for Home Assistant with ZHA
J**Z
Easy to set up in home assistant
I bought this sensor to replace an Eve door sensor that started flaking out on me. I really like the build quality of the sensor. To begin with, that magnet is large and powerful, which means it’s easy to set up, even if it’s a little far away from the sensor, and it will still detect when the door is opened and closed.I also really like the fact that it runs on AA batteries. Yes, that makes the device bulky, compared to other similar devices that run on coin batteries. However, AAs are a lot easier to source and more available all over the place. So I called that a win.As far as getting it set up, I was able to get it to appear in Home assistant without too much problem. However, I was not able to pair it with its own app, which I don’t really care about since I can use it in Home assistant. What bothers me a little bit, however, is the fact that I can’t seem to be able to pair it with HomeKit. Other than that, I really like this sensor, I just wish that it was easier to adopt with multiple smart home ecosystems..
S**X
Seems to work very well so far.. with Homeassistant...
Just got these, only had for a short time, so far, very good battery life, they ARE a little bigger-bodied than most, therefore more noticeable, but seem to stay secure when fastened by included sticky tape. Responsive to my Homeassistant system, zigbee is pretty quick for them.
R**A
Works great with Home Assistant and ZHA
Using with Home Assistant and ZHA; paired quickly and has performed great since installing. Replaced an older Iris door/window sensor that went offline constantly. Nice to open my door and have my lights turn on again! I little on the big side so it might not work on some windows but I can't imagine it not working on most doors. Would buy again.
G**G
Terrible products
Don't waste your money, or your time, on Third Reality products. No range, disconnect frequently, and chews up battery life. They're all just useless products. I bought several different sensors. Motion and contact. Difficult to pair, and then disconnect often. Seriously, just find a different product manufacturer.
H**H
Excellent!
I bought THIRDREALITY Zigbee Contact Sensor 4 Pack for for $41.99 on Noveber 21, 2024. This contact sensor is definitely one of the sensors I have, and it works well every single time. I love that it uses AAA batteries unlike other sensors I have, and I had no issues connecting it to Hubitat.One item to note is that these contact sensors are rather big. My other sensors are significantly smaller, but they also do not use AAA batteries. Given that my sensors are not easily visible where I placed them, their size is not an issue for me. But be aware that these are big / slightly bulky.I am very happy with this and would definitely buy them again.
Trustpilot
2 days ago
2 weeks ago
