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THIRDREALITY

THIRDREALITY Zigbee Motion Sensor, Pet Friendly, Compatible with Home Assistant, SmartThings, Aeotec, Homey, Hubitat or Echo Devices with Built-in Zigbee Hub

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$19.98
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Nov 3
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At a glance

Condition
New
Style
Motion Sensor
Model
3RMS16BZ
Dimensions
0.79"D x 1.06"W x 3.54"H
Weight
1.83 oz
Color
White
Power Source
Battery Powered
Works with
Echo (4th Gen), Echo Plus (1st Gen and 2nd Gen), Echo Studio, Eero 6, Eero Pro 6, Home Assistant, SmartThings 2015/2018, Aeotec, Homey, Hubitat, Homey Bridge, Homey Pro, Third reality Hub and Third Reality Smart Speaker

Features 5

  • ZIGBEE STANDARD COMPATIBLE MOTION SENSOR: A Zigbee Hub is required. Compatible with Zigbee hubs and Echo devices with built-in Zigbee hubs, including Echo (4th Gen), Echo Plus (1st & 2nd Gen), Echo Studio, Echo Show 8 (3rd Gen), Echo Show 10 (2nd & 3rd Gen), Echo Hub, Eero 6, Eero Pro 6, Home Assistant, SmartThings (2015/2018), Aeotec, Hubitat, Homey Bridge, Homey Pro, and Third Reality Hub Gen2 Plus.
  • CREATE ROUTINES: Using the Alexa app, create your own routines that are triggered when motion is detected. Customize Alexa messages like Welcome Home or Motion Detected in Living Room when motion is detected.
  • SMART LIGHT CONTROL: If you have a smart light or smart plug connected to the Alexa service, you can create a routine in the Alexa app that will enable it to automatically turn on when motion is detected (and off when no motion is detected for a period of time that you specify).
  • 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. Only for indoor use.

Description

Enhance your home security and automate your space with our motion sensors, which detect movement up to 20 feet away and can run for up to two years on just 2 AAA batteries. Place them anywhere and easily integrate them into your smart home system to control other devices via routines. Using the Alexa app, create your own routines that are triggered when motion is detected. Using the Smart Bridge MZ1(Sold separately) and the 3R-Installer App, you can customize the cooldown time to suit your preferences. Once something triggers the motion sensor, it sends a notification through the App on your phone. Capable of detecting motion up to 30 feet (9 meters) away. 2 AAA batteries can last for 2 years in typical usage. With THIRDREALITY Smart Plug and Smart Switch, you can create routine like this, "When you come back home and the motion sensor is detected, the switch and fan will turn on automatically. " That's so cool! You also can create other Routines, like if no motion detected, turn off the switch and fan. Wireless Motion Sensor Starter Kit with Zigbee Hub Starter Kit with Matter Bridge Protocol Zigbee 3.0 Standard, Zigbee Hub Required Protocol Zigbee 3.0 Standard, Smart Zigbee Hub Included Protocol Matter Certifty, Smart Bridge Included Suitable Devices Home Assistant(ZHA/Z2M), Aeotec, Homey, Hubitat and Echo Devices with Zigbee Hub Suitable Devices Echo Devices no Zigbee Hub Built-in Suitable Devices Google Home, Apple Home, SmartThings, hubitat,etc.Smart Speaker Required Pairing Mode Add a new device based on the adaptation hub Pairing Mode Follow the ThirdReality App to add the hub and motion sensor. Pairing Mode The motion sensor is prepairing with smart bridge , just scan to add the bridge. Third Reality is dedicated to developing easy-to-use smart home technology, allowing more users to easily manage and automate home devices without specialized skills. Our products emphasize simple installation and user-friendly interfaces.

Specs 19

Brand THIRDREALITY
Color White
Power Source Battery Powered
Item Weight 1.83 ounces
Maximum Range 30 feet
Mounting Type Wall Mount
Battery Description Alkaline
Battery Average Life 2 years

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

Just ok with Alexa. Amazing with Hubitat and Home Assistant.
Style: Motion Sensor
I bought 8 of these when they were $10 each. Needed a way to combine all my zigbee and wifi products (appx 60 devices). Initially hooked them up to Alexa, which worked fine, but I needed more customization. I wanted to try all the options out there. I bought a conbee II stick, a sonoff zigbee stick, a cheap, used chromebox (flashed HA OS onto it), and a Hubitat. Long story short, I like the combo of the Chromebox and Hubitat without the zigbee sticks. After a lot of work, all my Merkury (Tuya wifi lights and LED strips) and zigbee lights and sensors work harmoniously. They are mostly controlled by these Third Reality motion sensors. It's awesome how I can walk through my home and have the lights follow me to whichever room I go. Then, within a few minutes, the lights will dim, and eventually turn off when I'm not in the room. I no longer have to worry about the kids leavings all the lights on in the house, at full blast, all day. They know they can just walk into a room and things will turn on, then turn off on their own after a couple minutes of no motion. I personally don't think the sensors are slow, but they're not completely instant. However, very satisfactory IMO. It mostly depends on the placement of the sensor. I tested the placement of each sensor for a few weeks before deciding on final placement. Sometimes they "see" too far off into the distance, which can be 10+ feet. However, in one room, I have to enter the darkness for ~1 second before the lights turn on. It's not the sensor's fault; it's due to placement. We just know we can't dash into the room - we need to watch that first step for one small second, which I'm fine with. I can easily place another sensor right outside the room, but then it would be turning on excessively. I spent a month tinkering, for hours a day, to ensure perfection. My lights are set to dim after 2 minutes of no motion, then turn off after 5 minutes of no motion. When we're sitting at the dining room table (within 5 feet of the sensor), it will (generally) not recognize smaller/regular eating and drinking motions, thus making the lights dim. However, the timer will reset if I get out of my chair. So, these sensors are not good enough to be a true occupancy sensor, which can detect super small movements. But with my kids the sensor is reset enough, with all the moving around and getting up, to keep the lights on. However, it's not going to sense you if you're just sitting there quietly eating. Anyway, I really like them and I want some more to make the sensing more precise. I want to combine automations so they they react only when multiple sensors are triggered. However, I don't want to spend $20 on each one, or even $17. They're worth it if you only need a few. But for the amount I want, I need the $10 deal! I want to thank Youtube and all the awesome home automation channels that showed me how to do all of this. It was definitely a big time commitment. Lots of frustration, but lots of fun and very satisfying to see my final product. ... show more
Reviewed in the United States on December 21, 2022 by Miguel L.
Simple
Style: Motion Sensor
My needs for a motion sensor were limited. I had been using the person detection in my Echo but it was not sensitive enough - this device was a good replacement with a longer range and better sensitivity. Setup was a matter of a few minutes: Alexa discovered the new device immediately and I renamed it and inserted it into the existing automation routine and it worked first time. That took care of some upstairs safety lighting so I'm probably going to buy another for safety lighting downstairs -- guess I should have bought the two-pack in the first place... A bit of advice: you don't really need to and should probably avoid using the Thirdreality app. To add the device to Alexa routines it is far easier to use the OTHER option and add it directly as a Zigbee device as long as you have functional Zigbee hubs. Far simpler and one less company involved in your private affairs. Oh, and I did buy the second device... And a further bit of advice: it pays to make sure that the device pairs with the nearest Zigbee hub and not some random one as my second one did. When mine failed to work after a couple of weeks I discovered that it had paired itself with the hub in my Alexa speaker in the office, probably 30-feet, a floor and a couple of walls away rather than the one sitting all of ten feet away in the same room. I re-paired by placing the sensor literally next to the proper hub and all was well. ... show more
Reviewed in the United States on February 23, 2025 by J. McGaw
Works great with Home Assistant
Style: Motion Sensor
Consistent motion detection for my purposes (motion light for my basement stairs). Not truly pet immune, but that's not a big deal for me. Not weatherproof, so indoor or covered outdoor use only. The battery has lasted for several months so far and is still showing a 94% level. Easy to pair and stays online. Took a couple of tries to take a firmware update, but eventually updated fine. If you need a cheap, basic motion sensor, don't hesitate to pick this one up. ... show more
Reviewed in the United States on May 29, 2024 by Adri
Bait & switch! These did not need a HUB when I bought them!
Style: Motion Sensor
I bought these in 2022 (many of them) & they worked great with the exception that when the batteries died, I would have to reset them up all over again like they are brand new. Kind of a pain to deal with, but they worked for my hallway. However, what I’m really angry about now is that they DID NOT REQUIRE A HUB at all when I bought them!!! All of a sudden they quit working & now, in order to continue using them, I have to spend another $50-$100 for a hub. Why? They worked just fine WITHOUT A HUB! This company is just doing a money grab from their existing customers. I was still able to get it to connect to Alexa IF I put in the Alexa app that it is an “Other” motion sensor & NOT a ThirdReality detector, but the routine just won’t work anymore because they added a need for a HUB. This is BS! A company should NOT be able to render a product “unusable” unless you fork out more money to them 3 years AFTER you bought it! Do NOT buy from this company if u want their products to work years down the road. There is just no guarantee it will continue to work. They are running a scam here! I will NOT be buying a HUB to make them work. I WILL be buying a detector & Hub from a totally different company. I’m angry that I have to spend more money for this too work again, but I will NOT let this shady company get another penny from me. STAY AWAY from ThirdReality! ... show more
Reviewed in the United States on July 29, 2025 by Cynthiatxrn
GREAT NO-FRILLS SENSOR- 35 second recovery time!
Style: Motion Sensor
UPDATED BELOW I picked this up for $15.99 and so far so good. The sensor is about as small as it could possibly be and still fit two AAA batteries inside. It paired right away via Zigbee with my Hubitat C-5 hub and no other configuration was required (but see the little quirk below in the update). It does not have a tamper sensor. The only data returned by the sensor are motion and battery level. The coverage area is nice and wide and I was pleased to discover that the motion sensing recovery time is only about 35 seconds. Why does this matter? I currently have six Bosch motion/temp sensors in various places and one of them is right outside my front door. I happened to get those on some sort of weird flash sale for $30 each where they were normally about $90. For $30 they are just fine, but they are large, take 4AA batteries, and most significantly have a MINIMUM three-minute recovery time in between motion sensing events. I use one of the Bosch sensors to alert me when one of my two dogs has returned from whatever adventures they were having outside. They tend to do their own thing and one of them almost always comes back before the other one. If they return more than three minutes apart then it's not problem and I get two separate alerts for the two different dogs and can open the door twice. But if the second dog comes back during the three-minute window right after the first, the Bosch motion sensor won't pick up the new motion alert and the second dog will be forced to wait outside with no recognition from his owner. No big deal right? He just has to wait another three minutes. Well, no. If you are within the three-minute recovery period and the sensor is tripped again, it starts a NEW three-minute recovery period. Assuming the dog doesn't freeze to death and keeps moving at some point during that three-minute period, the sensor will just keep re-tripping and going into an endless loop of three-minute recovery periods until the dog finally freezes or dehydrates. Thus the dilemma. With the 35-second recovery period of this sensor, I have now reduced the potential mortality rate of my second dog to return home by a factor of five. Good progress. UPDATE: The first sensor continues to work great a month later. I bought two more via the two-pack deal. The first one paired up instantly with zero issues. The second one paired up fine but came up as (blank) for the device type (Hubitat C-5 hub) and very strangely showed "Signify NV" as the manufacturer instead of ThirdReality. I tried changing the device type manually to "Generic Zigbee motion sensor- no temp," which is what the other two sensors automatically configured as. The sensor would show up as a device in my Hubitat device list but would not report any data. I removed it, did a factory reset, re-added, repeated, and still had the same problem. Posted a question here to see if there was a firmware update. Before I gave up, I tried one last thing that I had zero expectation of working. I removed the device again from Hubitat, held down the reset button and did a factory reset, and then took the batteries out. While holding down the reset button, I put the batteries back in and did one more reset. I have no idea why or how, but this somehow fixed the issue. The sensor paired up no problem with Hubitat, configured as "Generic Zigbee motion sensor- no temp" and properly showed "ThirdReality" as the manufacturer. From there on out the sensor worked just fine. I can't explain it but if you have the same weird problem I did, try doing a couple factory resets and holding down the button while taking the batteries out and then putting them back in. LOL the mysteries of the universe. ... show more
Reviewed in the United States on December 12, 2023 by Doug Colt
Works great with Alexa, till it doesn't...
Style: Motion Sensor
I bought 2 of these to replace earlier Wyze products (don't ask!). Real simple tasks; one turns on a light as I go to the dark corner where my sock drawer is located, and the other turns on a light at night out on the porch. I connected them to Alexa using the company's smart hub. They both worked fine, exactly as expected, for a few weeks. Then, they stopped communicating. The sensors do detect motion, and you can check with the app. Alexa hears nothing, though. There is no record of detection since early December. I have uninstalled everything, sensors, hub, and the link to Alexa. Then I installed it all again, but Alexa does not want to take any notice. Obviously, I cannot say whether the problem lies with them or with Alexa, but the upshot is that I have no motion-detecting ability. ... show more
Reviewed in the United States on January 21, 2025 by Phil Buglass
Works well with Alexa when setup properly
Style: Motion Sensor
I wanted a better solution for motion activation than the one built into my Echos (Dot and 4th gen Echo). They work but only every half hour or so which is a drag. This product detects and sets motion every time, thus turning on (and off) a light switch I wanted to control through Alexa. There are some caveats. First, you must have a supported Echo with a built-in hub this device works with. The product page does show this correctly. Doesn’t work with Echo Dots, does work with the larger Echo (mine being 4th Gen). Next, forget the instructions that come with the unit where you are told you need to download the host application. It doesn't work, doesn't see or detect the Echo. Big waste of time. Just place the batteries in the unit and hit the tiny button inside to start paring. Then ask Alexa to detect devices. That's all it took for me. Then place the unit where you desire and setup a routine for a smart light, works every time. For the price, this unit can't be beat. ... show more
Reviewed in the United States on January 7, 2024 by Andrew D. Rodney
Positioning is important.
Style: Motion Sensor
I have 3 of these motion sensors and they all work well once you figure out the best placement for them. There is a brief delay before the associated actions happen but not a big deal. Mine worked out of the box with Alexa. I like the 30s timeout after it is triggered on so there are no repeated actions, however it would be nice to be able to manage this timeout per device. ... show more
Reviewed in the United States on September 6, 2026 by Reena Driggs
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