








🚪🔒 Secure your space, stay connected, and never miss a beat!
The Eufy Door Alarm Entry Sensor T89000D4 offers a powerful 100-decibel siren and up to 800 days of battery life, ensuring long-lasting, reliable security. Designed for easy installation on any door or window, it integrates seamlessly with the Eufy Security HomeBase and sends instant alerts to your smartphone, making it the smart choice for proactive home protection.






| ASIN | B07GJJZZ3G |
| ASIN | B07GJJZZ3G |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
| Battery description | Lithium |
| Best Sellers Rank | #13,043 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Home Security Door & Window Sensors |
| Color | white |
| Control method | App |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,867) |
| Customer reviews | 4.5 4.5 out of 5 stars (1,867) |
| Date First Available | 2 May 2019 |
| Date First Available | 2 May 2019 |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 00848061058666 |
| Included components | Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner's Manual, Happy Card. |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 68 g |
| Item model number | T8900 |
| Item model number | T8900 |
| Item weight | 68 g |
| Manufacturer | Eufy |
| Manufacturer | Eufy |
| Mounting type | Door Mount, Window Mount |
| Noise level | 100 Decibels |
| Number of batteries | 1 Lithium Ion batteries required. (included) |
| Part number | AK-848061058666 |
| Product Dimensions | 7.4 x 2.8 x 2.2 cm; 68.04 g |
| Product Dimensions | 7.4 x 2.8 x 2.2 cm; 68.04 g |
| Sensor technology | Contact Sensor |
| Size | motion sensor |
| Style | Sensor |
| UPC | 848061058666 |
| Wattage | 7.5 watts |
| tech_spec_battery_description_toys | Lithium |
K**D
ممتاز
R**E
The Eufy ecosystem is very good, I’ve had it for five years now. Just needed more entry sensors which was easy to synchronize or connect to the WiFi and the system and it works well. The adhesive is good, it sticks properly to the surface of my window really good. I would recommend the entire Eufy ecosystem if you want a reliable security system for your home. Remember you can set up the entire system yourself. It’s that easy.
M**N
An all-round great product, set up was easy, and they are super reliable. I just took them out of the box, loaded the included batteries into them, and placed them on my door and door trim, and it worked like a charm. The adhesive strip on the back of them allows you to readjust the sensor and magnet a few times without losing any strength, so you can find the best spot to place them, making sure the gap between them is less than 4cm. When testing, I armed the security system and opened the door as if I were an intruder, and the alarms started blaring instantly. I also got a notification on my phone as soon as it happened. No regrets adding this to my security system
A**B
Handy, easy to install and add to the app, lots of options for notifications so they don’t annoy you. Would repurchase and recommend
N**N
Lots of potential. Hardware is very well designed. Software feels like it’s still under development. 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.
I**N
Another quality Eufy security device. These install easy and work perfect. The response time in my home is 1-2 seconds max. I use one on my main door as an arm and disarm spot and it provides that subscritpion hardware feel in a very smart DIY system. 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.
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