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🚀 Elevate your smart home game with motion sensing that just works!
The THIRDREALITY Zigbee Motion Sensor 2 Pack offers reliable, pet-friendly motion detection compatible with a wide range of Zigbee hubs including Echo devices, SmartThings, and Hubitat. With a detection range up to 30 feet and a battery life of up to 2 years on 2 AAA batteries, it enables fast, customizable Alexa routines for smart lighting and security automation. Easy to install and integrate, it’s designed for indoor use and supports OTA firmware updates for future-proof performance.

| ASIN | B09MVKWBFF |
| Antenna Location | Residential Security, Automation, Energy Management |
| Battery Average Life | 2 Years |
| Battery Description | 2 AAA batteries |
| Battery Life | 2 Years |
| Brand | THIRDREALITY |
| Compatible Devices | Echo devices with built-in Zigbee hub, Home Assistant, SmartThings, Aeotec, Homey, Hubitat, Homey Bridge, Homey Pro, Third reality Hub, Third Reality Smart Speaker, Apple HomeKit, Google Home, SmartThings |
| Customer Reviews | 4.1 out of 5 stars 376 Reviews |
| Manufacturer | Third Reality, Inc |
| Maximum Range | 30 Feet |
| Mfr Part Number | PiWMSA2 |
| Model Number | PiWMSA2 |
| Mounting Type | Wall Mount |
| Number of Batteries | 4 AAA batteries required. |
| Number of Packs | 2 |
| Power Source | Battery Powered |
| Unit Count | 2.0 Count |
R**W
Worked like a treat
Giving it 5 stars because it worked out of the box with the echo hub, no messing around. 1 to 2 second routine responses on movement.
S**Y
Bueno bonito y Barato
Es compatible con los Hubs de Smartthings, detecta muy bien el moviemiento.
'**K
The Home Assistant Nerd’s Favorite Motion Sensor
Purchased for $42 in January 2026. As my Home Assistant ecosystem continues to take over the house, I picked up this 2-pack of Third Reality Zigbee Motion Sensors. At $21 a piece, they are a solid value, especially considering they come with batteries and sticky backings right in the box. The setup was effortless—they paired with my coordinator in seconds. I’ve found the range to be about 12 feet, which is perfect for most rooms. Because I wanted a more "god-eye" view of the living area, I actually 3D printed a custom corner mount to get the angle just right, and the sensors fit into it perfectly. What I really appreciate is the reliability of the PIR (Passive Infrared) technology. I have one in the laundry room, and it’s smart enough to ignore the vibrations or moving air from the machines—it only triggers when it detects actual body heat. No more "ghost" motion events! The battery life has been excellent so far, and they haven't dropped off the mesh once. If you're building out a local smart home, these are a no-brainer for lighting automations. TLDR A reliable, budget-friendly Zigbee motion sensor that integrates perfectly with Home Assistant. Uses PIR technology to reduce false positives, features great battery life, and is small enough to be easily mounted (or custom-mounted) anywhere.
B**N
Handy motion sensors
These sensors are pretty good. They don't have crazy far range, they reliably work at maybe 5 meters, with spotty performance beyond that, but for what they are advertised to be I think that's about what we expect. No reliability problems at the ranges they are designed for. Well constructed, easy to slide apart and swap batteries. Strongly recommend using the provided screws to mount this; using the sticky pad alone it may fall off your wall (though this may only have been due to my wall's paint being terrible). Zigbee as advertised, joins and operates beautifully in Home Assistant.
J**J
After 48 hours in moderate temp garage. Frustrating garbage.
Complete garbage. Got 1 of 2 connected pretty quickly and everything was looking good. But after about 48 hours everything went south. One became unreachable. So I reconnected it but regardless both stopped working on my zigbee network. So hours and hours of trying to disconnect and reconnect I just gave up and will now buy another brand. Such promise but these are cheaply made and my guess is they couldn't handle 50 degree F garage temps. So maybe this would work better inside a heated space. Just guessing as I could no longer handle the frustration. Update: I'm new at zigbee. I didn't realize these motion sensors are end points and not repeaters. I spend another $100 on some 3 way switches and installed them in between my controller and the sensors. Now one is green and one yellow but everything is working well now and I'm happy. It's important to realize these are not nearly as powerful as wifi. So you will need mains powered repeaters like switches in between. I've been feeling out big time and have now spent $250 just to get my garage lights to turn on and start on with motion. But it's sort of a hobby now and I've found more cool use cases like using an outdoor motion sensor to use an outdoor camera to snap a picture of my driveway and front door and text it email it and send me a telegram. My wife can get it too but she doesn't care about it as much as I do. I like to have evidence of my deliveries etc. I had to use grok extensively to figure out how to get it to work. So I'm a happy camper but you best be ready to make this a full time job for a week or two. I also now have a water sensor next to my water heater that will beep and text me an alert if it defects water. Super cool!
Trustpilot
1 week ago
2 months ago