eufy Security Motion Sensor, Home Alarm System, 100° Coverage, 30 ft Detection Range, 2-Year Battery Life, Adjustable Sensitivity, HomeBase Required, Optional 24/7 Protection Service, Home Security
Condition: New
Buy Now, Pay Later
As low as
$6
/ mo
Learn more
- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
15 left in stock
Arrives
Saturday, Apr 18
Features
- Protection That Lasts: The included battery provides up to 2 years of power for round-the-clock security.
- Extensive Coverage: Detects motion within a 100 field of view up to 30 feet awaymore than enough to secure an entire room of your home. (NOTE: This motion sensor is not waterproof.)
- Adjustable Sensitivity: Tailor the sensitivity of the motion sensor so that it only alerts when humans are in rangerather than your playful pet dog or cat.
- App Alerts: Notifies you as soon as motion is detected, sending a message to your phone via the eufy Security app, no matter where you are.
- Optional 24/7 Protection Service: New optional 24/7 professional monitoring service is now available for 24/7 emergency police, fire and medical response when your alarm system is triggered.
Brand: eufy Security
Color: White
Power Source: Battery Powered
Item Weight: 0.15 Pounds
Maximum Range: 30 Feet
Power Source: Battery Powered
Maximum Range: 30 Feet
Mounting Type: Wall Mount
Battery Description: Lithium
Battery Average Life: 2 years
Compatible Devices: eufy Security HomeBase and all other eufy Security products
Number of Batteries: 1 Lithium Metal batteries required. (included)
Antenna Location: Walkway, Hallway, Staircase, Room
Smart Home Compatibility: Smart Home Compatible
Item Weight: 0.15 Pounds
Item Dimensions D x W x H: 0.79"D x 1.97"W x 3.15"H
Brand: eufy Security
Manufacturer: eufy security
Global Trade Identification Number: 82
UPC: 194644180782
Mfr Part Number: T8910021
Model Number: 359862
Color: White
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Apr 18
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
The eufy Security Motion Sensor has been a fantastic addition to my home security setup. From the moment I unboxed it, the experience has been smooth, intuitive, and surprisingly hassle-free. Setup was a breeze — it took just a few minutes to connect the sensor to my existing eufy HomeBase system via the app. The instructions were clear, and no special tools or wiring were required. Whether mounted with screws or adhesive, the device is compact and discreet, fitting effortlessly into the corner of a room. In terms of performance, the sensor is extremely reliable. It accurately detects motion across a wide field of view and a generous range, making it ideal for entryways, hallways, or larger living areas. It has never triggered a false alarm, even with pets moving around, which I truly appreciate. One of the standout features is the smart integration with the eufy Security ecosystem. I receive instant alerts on my phone whenever motion is detected, and the customizable modes in the app allow me to easily switch between Home, Away, and Disarmed settings based on my schedule.
...
show more
Reviewed in the United States on May 13, 2025 by ram
These work very well. They are excellent. Set up is easy as can be. You must have the Eufy hub for the audible alarm. The coverage are is more than sufficient. It does not pick up on small animals.
Reviewed in the United States on January 8, 2026 by AtoZ
Easy to mount. It's a necessary accessory to your EUFY security system.
Reviewed in the United States on December 31, 2025 by Judy Craig
Eufy Security Review I’ve put a lot of time into researching alarm systems. I used to work for an alarm system company and believe in home managed “smart” systems. Eufy caught my eye after a lot of great reviews on the doorbell. I decided to keep all my sensors and cameras within the same system to keep it easier to manage. After having it for 8 months now: I’ll go over the pros and cons of this system from my experience. My system includes: 2k Wireless Doorbell Cam, Door/window sensors, Motion sensors, Eufycam 2c (wireless) version, Eufy Cam 2, and a 2k Indoor Cam Pan and Tilt. I have been testing most cameras on the highest sensitivity Pros: 1. Won’t drain your wifi: We have relatively low bandwidth, a decent amount of smart devices, and Eufy works well most of the time! The range is good too I have one camera in the backyard away from the house and it streams well. 2. Local recording: Peace of mind knowing someone at the company or something isn’t watching you.. I hope, haha. 3. Installation and setup: Don’t know how it could be easier. 4. Interface is easy to use and setup to customize 5. Battery on dedicated Cameras - The version 2 camera really did last 6 months before I had to charge it, and I had high sensitivity most of the time. The 2C cameras are good, but not quite as advertised. The doorbell is the worst and I have to charge is about every 2-3 weeks. Cons: 1.) Motion detection - this is my biggest issue with the system as its part of most of the products use this hardware to trigger alerts or record. - Detection/reach is NOT 30 feet. I’ve measured on multiple cameras and it rarely picks up anything that far away. Usually starts recording at about 10-15 feet (so half?!). Not great. - People and dogs? Nope. It will often go off with cars, leafs blowing by, when a cloud moves and the suns sines through brighter than the second before, and more. This can be very frustrating, especially when you have it set to “human only” mode. WHAT HUMAN CAN MOVE 35 mph and is 12 feet long? Or what human is 3 inches big and brown…i.e a leaf? Haha. - Slow: If someone hurries up to your door or by the camera, it won’t pick it up. I get a lot of recording of back of heads as UPS folks are going away. -Sometimes misses obvious ones: A family member will walk by a camera 10 ft away in the middle of the day, or go to their car and nothing will have been triggered. Kinda scary. This is especially odd since I’ll get 3 triggers a day from a gust of wind, but not a person walking by… I don’t get it. 2.) False Alarms. This is mostly a product of the motion detection and mentioned above. The scariest in when you have the alarm set to “away” in the middle of the night. The heater turns on in the basement and a “motion detection” alarm goes off. You spring out of your bed… oh crap, someone is in the basement?? Grab a gun, wife runs to grab kids… your adrenaline is running high at 2am and… nothing (thankfully). Have that happen a few times with a camera, or motion sensor and then it becomes a boy who cried wolf situation. Scary when you actually need to be alarmed though you’ve built up a tolerance. But hey, now I’m getting good at “sweeping” an area much like a SWAT team I see in the movies? Haha 3.) Default evening motion detection is set to “all things”. So if cars go by, you’ll have to turn off notifications or else you’ll get a LOT, all night. 4.) Doorbell Battery life: if you want to monitor well, it dies quickly. Again, it picks things up late in my experience so I have to have it on high sensitivity or it misses obvious things. And yes, I’ve tried placing it in different spots. 5.) Image quality not as advertised- for “2k” on some of these cameras, it’s not like the advertisements where you can zoom in and clearly see a license plate or something haha. Faces are pretty good, but it’s not thaaaat great. Better than others for sure, but still not what you’d expect for what seems to be the highest def in the consumer wireless market. 6) Incomplete Security items: These are bonuses, but a fire-alarm, flood sensors, or other items that would make it complete. This includes monitoring service. Would be great to have IF you go away on vacation for a week. I’d pay for it. Lastly, I love that a certain competitor has a cell signal incase wifi goes out. 7) Indoor cam has its own security settings. Why is this separate? Just treat as another 2c, or version 2 camera. Conclusion: I had high hopes for this system. Other systems seems to be less compatible with google home, or charge money to use the cloud, or don’t locally record, etc…. It seems there is not a perfect complete system. This one is pretty good If I were to do it again I would just use the doorbell and maybe door/window sensors. I then would get the cameras and motion sensors from a different company and hope I can bridge it all to a google home or something.
...
show more
Reviewed in the United States on February 9, 2021 by Michelle White
This motion sensor is doing exactly what I wanted it to do. I set it up in my mailbox to let me know when the mail arrives. I had to put the sensitivity on the lowest setting to prevent hundreds of unwanted alerts Now it only alerts when the mailbox is opened. Thank you for a great product
Reviewed in the United States on January 5, 2026 by James
I'm impressed with these. I took a chance and mounted them outdoors to extend the detection range of my S340 cams. One is mounted under an eave and the other I wrapped in a clear sandwich bag with a rubber band and mounted it to a tree! Its been about 2 years and they both continue to work just fine with the original batteries. I have changed the sandwich bag a few times. They've survived heavy rains and winter snow. One down side to this application is that they will trip when a squirrel, rabbit or other small animal passes by.
...
show more
Reviewed in the United States on November 12, 2025 by TJR