















🚀 Elevate your smart home game with motion sensing that just works!
The THIRDREALITY Zigbee Motion Sensor is a pet-friendly, battery-powered device compatible with a wide range of Zigbee hubs and smart home platforms. It detects motion up to 20 feet away, runs on 2 AAA batteries lasting up to 2 years, and supports customizable Alexa routines and OTA firmware updates for seamless smart home automation.






















| ASIN | B08RRRWK6B |
| Average Battery Life | 730 days |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Battery Cell Type | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | 19,005 in DIY & Tools ( See Top 100 in DIY & Tools ) 36 in Motion Detectors (DIY & Tools) |
| Colour | 1 Pack |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,291) |
| Date First Available | 21 Jan. 2021 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Included Components | AAA Battery × 2, Double-sided Tape, Screw × 2, Wireless Motion Sensor |
| Item Package Quantity | 1 |
| Item Weight | 51.8 g |
| Item model number | 3RMS16BZ |
| Manufacturer | Third Reality, Inc |
| Part Number | 3RMS16BZ |
| Plug profile | Wall Mount |
| Power Source | Battery Powered |
| Product Dimensions | 2.7 x 9 x 2 cm; 51.88 g |
| Style | Motion Sensor |
| Temperature Range | 2E+1 Degrees Celsius |
P**O
Really good little motion sensor with long battery life
This is a very good little motion sensor Im using with Home Assistant to switch on and off a light in the downstairs bathroom. It connected to my Zigbee hub instantly and has worked flawlessly since I installed it. Simple, small and long battery life (obviously depending on how often its triggered).
L**I
Best Zigbee Motion Sensors I have used to date
Why did you choose this product over others?: This is the best Zigbee motion sensor I have used to date. The 2 AAA batteries, ensure that it has a strong connection to the zigbee router. It will stay powered for a long time due to these batteries. I have had multiple issues in the exact locations these motion sensors are in when using the sensors with coin batteries, but now These have not lost connection and have been very reliable. Super easy to install. The only dislike is the design, as they are quite Long, but that is needed for the AAA batteries so it is a trade off.
C**2
Works with Home assistant.
Great little motion sensor. Very responsive and paired immediately with ZHA. It's basic enough, though and doesn't report luminance, only motion. It runs on 2 AAA batteries. I've been experiencing issues with Aqara motion sensors, including the original one and the P1, so I'm on the hunt for a reliable motion sensor. I'm trying out the Candeo one at the moment. At 15 euros, you can't go wrong with the candeo.
R**V
Fails to stay online fo any length of time
Works great for a short time, then becomes unresponsive. Keeps disconnecting from echo 4 Zigbee hub. Constantly resetting it
G**D
works well
easy setup and does just what its supposed to do. Got this in the b/Friday deal but still good price. Long detection distance got it set up in the hallway and picks up motion straight away from opening front door which is about 18ft. Great automations with other devices i.e. lights works instantly (am using with Zigbee) Defo recommend will be looking at more from these guys.
R**B
A nice unit...
It works with HA, it's nicely made, it paired smoothly... but it seems shorter range than my old SONOFF one. That said, it's much better made than the old one, it uses AAA batteries rather than lithium ones and I really like it. It's just a shame it seems shorter ranged! I'm getting maybe 5-6m from it, whereas my old one did a good reliable 10m.
A**R
Great if you get it for sensible price of £12
Can't fault it after a few weeks use. Does the job.
M**.
Paired quickly and unobtrusive
Integrated really quickly with Home Assistant/ZIGBEE2MQTT. Hidden away nice and easily as its quite slim (but is tall) Never had an issue with drop-outs or disconnects.. Responsive... Recommended..
M**L
parfait avec zigbee2mqtt sous domoticz
イ**ー
反応も良く、センサーとして役立っています 商品説明の通り、ジグビーハブかECHOスピーカーが必要です
N**K
This motion sensor does what it’s supposed to and does it well. I run it using Zigbee2MQTT on Home Assistant, and it integrates seamlessly. The detection is quick, the cooldown is around 30 seconds, and automation triggers are instant. It uses AAA batteries, which I really appreciate—easy to replace and longer-lasting than coin cells. I love Third Reality products and have many of them in my setup, and this one continues that streak of reliability and value. Solid field of view, dependable performance, and a great fit for any smart home.
K**S
Spent multiple hours going through forums to identify a solution, but unfortunately not motion sensors are not connecting with Alexa
P**S
These sensors worked as suppose to no issues at all.
Trustpilot
1 week ago
1 month ago