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eufy Security Entry Sensor, Detects Opened and Closed Doors or Windows, Door Monitoring, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor Use Only, Requires HomeBase, 24/7 Monitoring Optional
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Color | white |
Brand | eufy Security |
Power Source | Battery Powered |
Compatible Devices | Smartphone |
Product Dimensions | 1.1"L x 0.87"W x 2.91"H |
About this item
- 2-year Battery Life: One battery provides 800 days of monitoring.
- For Doors And Windows: Compact and versatile design fits onto any door or window frame. Requires eufy Security HomeBase.
- 100-decibel Siren: Enable or disable siren protection, which triggers a 100-decibel siren on HomeBase, and sends an alert to your smartphone when forced entry is detected.
- 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.
- What's Included: Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner's Manual.
Frequently bought together
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From the brand
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At eufy Security, privacy and protection are our top priorities. Both are integral to our daily operations, and to implementing measures that ensure your data is always safe.
From your newborn crying for mom, to your victory dance after a game, your personal moments are yours. We are committed to products and services that keep your data private and secure.
That’s just the start of our commitment to protect you, your family, and your privacy.
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Product Description
What's in the box
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Product guides and documents
Product information
Product Dimensions | 2.91 x 1.1 x 0.87 inches |
---|---|
Item Weight | 2.4 ounces |
ASIN | B07GJJZZ3G |
Item model number | T8900 |
Batteries | 1 Lithium Ion batteries required. (included) |
Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #90 in Home Security Systems |
Is Discontinued By Manufacturer | No |
Date First Available | August 15, 2018 |
Manufacturer | eufy |
Country of Origin | China |
Warranty & Support
Feedback
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the quality, value, and performance of the alarm. For example, they mention it works well, is easy to set up, and does not require a monthly fee. That said, some complain about the battery life and notifications.
AI-generated from the text of customer reviews
Customers like the performance of the door sensor. They say it works well, is reliable, and easy to set up. Some customers also mention that it's a great and unnecessary way to monitor a door or window. Overall, customers are satisfied with the performance and quality of the product.
"...base, they were added to the controller app, they have been working perfectly thus far...." Read more
"These work great with the Eufy security system. They are small sized and easy to install with the included adhesive strips...." Read more
"...This lets me know when either door opens and I've got it set up to set off an alarm at my main unit so I can hear it anywhere upstairs in the main..." Read more
"...low bandwidth, a decent amount of smart devices, and Eufy works well most of the time!..." Read more
Customers find the installation process of the alarm to be easy. They mention that the door and motion sensors are easy to integrate with the Homebase, and the installation via sticky tape was quick. The sensor works great, pairs easily with the homebase, is easy to attach to any door frame, and comes pre-programmed. Customers also say that the setup is easy, and it connects right away in the app to their homebase unit. Overall, most are happy with the value of the product.
"...We’ve recently purchased many eufy security products. These sensors pair easily to my eufy homebase 2 and read the door’s open-close status..." Read more
"...They are small sized and easy to install with the included adhesive strips. Syncing to the home base was simple and fast." Read more
"...3. Installation and setup: Don’t know how it could be easier.4. Interface is easy to use and setup to customize5...." Read more
"Just as advertised. Came pre-programmed." Read more
Customers like the quality of the alarm. Some say it's a great product, easy to set up, and does not disappoint. They also appreciate the great notifications and support team. Overall, customers are happy with their purchase and recommend it to others.
"This cameras are super awesome! No complaints so far" Read more
"...Great product and works exceptionally well. Easy to set up and customer service was very helpful...." Read more
"Nice, well made entry sensor!! the only thing that could make it better is if eufy made a waterproof version so I could use one on my mailbox 😂..." Read more
"Awesome, simple, easy to set up." Read more
Customers like the value of the sensor. They say it's a great sensor for the price, and it doesn't require a monthly fee.
"...Eufy is one of the few camera security systems that does NOT require a monthly fee." Read more
"...Who knew security and support could be so reliable AND affordable?! 💕..." Read more
"...Too expensive" Read more
"...with all the products in their line-up, best of all there's NO recurring monthly fees to use the system!..." Read more
Customers are mixed about the notifications. Some find the notifications very quick and convenient, while others say they are very delayed and take some fine-tuning. They also mention that the product picks things up late and there is sometimes a slight delay before the chime sounds.
"...Syncing to the home base was simple and fast." Read more
"...to start recording, a 100db siren to go off inside and camera sirens to go off outside, audible chirps when doors\windows open and close, and set up..." Read more
"...Again, it picks things up late in my experience so I have to have it on high sensitivity or it misses obvious things...." Read more
"...The entry sensor triggers the home base alert to let me know when the front door is open, and I can set up the camera to start recording as well...." Read more
Customers are dissatisfied with the battery life of the alarm system. They mention that it stopped working and required them to reboot the hub every day. Some customers also report issues with the software and the keypad, saying that it doesn't work right.
"...However, Because of the software, they seem pretty useless...." Read more
"...Alexa even allows a routine to be set-up but unfortunately it didn't work...." Read more
"...4. Interface is easy to use and setup to customize5. Battery on dedicated Cameras - The version 2 camera really did last 6 months before I..." Read more
"...The two I just bought, however, did not work. In the Eufy app, I clicked on “Why does my device have a different case?”..." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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We’ve recently purchased many eufy security products. These sensors pair easily to my eufy homebase 2 and read the door’s open-close status reliability. However, Because of the software, they seem pretty useless.
Right now, I can “arm” my eufy security system and an alarm will sound when the door is opened. That’s good. But the app requires many taps to arm/disarm the system and there’s currently no integration with other systems like HomeKit or August.
I expect one big button to arm/disarm all my smart home security devices.
Adding integrations to arm/disarm the system or Siri Shortcuts would be a big improvement!
Additionally, the sensor has no chime feature with the homebase making it useless unless the system is “Armed”. It would be very useful to hear a pleasant chime from the homebase or the eufy video doorbell chime when my young kids open the door unsupervised.
Ultimately, it’s a neat add-on to my eufy cameras, but features seem a bit raw or missing. I’m hopeful eufy will continue development.
Update: Anker emailed me about my review and apologized for the experience. As part of the apology they sent a cool little battery bank. I’m glad they care and are paying attention. I hope this means they’re adding my requested software changes. Unfortunately for Anker, my review doesn’t change until they change how this product integrates with the rest of the system.
More updates: Anker/eufy has continued to pursue total satisfaction. I must say I’m impressed. If they’re product development work’s nearly as hard as their customer service, they’ll be adding my requested changes in no time. Along with this update I must mention an announcement by eufy at CES 2020. Eufy is releasing a new keypad with home/away buttons thereby satisfying one of my major complaints with this system as an alarm. I am increasing my rating from 3 stars to 5 stars out of optimism for future updates as well as outstanding customer service.
Update 7/8/2020
The requested door chime feature has been added. Now a pleasant chime is made by the hombase2 when a door is opened.
They still lack in integration even among their own products. If I arm the alarm system, (camera, motion, and door sensors paired to the homebase2) other devices like the floodlight cam outside are unaffected and do not switch into an “away” mode without additional action in the app.
Recommendation to Eufy: improve the magnet housing assembly by making it a little wider and sturdier along with a larger screw that is capable of holding it down securely.
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.
Top reviews from other countries
The considerations here will be related to install location. You have to have the little magnet no more than 4cm from the sensor so you need to make sure your mounting points are close enough together. Do you have thick door trim or a large gap between the door and a solid mounting point? Weird textures or recessed sidelight glass? Consider where you'll put the pieces before you order and especially before you stick or screw them in. 4cm is a good distance and should work for most people.
These make a great addition to my Eufy smart DIY security system.
Easy installation
It works
Have a lot of Eufy products very impressed
Can view status at a glance from Eufy home screen Great addition to system
Reviewed in Canada on February 29, 2024
Can view status at a glance from Eufy home screen Great addition to system