--- product_id: 107179234 title: "eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380" brand: "eufy security" price: "€ 42.13" currency: EUR in_stock: true category: "Eufy Security" url: https://www.desertcart.be/products/107179234-eufy-security-entry-sensor-detects-opened-and-closed-doors-windows store_origin: BE region: Belgium --- # 100-decibel siren alert 2-year battery life Fits any door/window frame eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 **Brand:** eufy security **Price:** € 42.13 **Availability:** ✅ In Stock ## Summary > 🔐 Elevate your home security game—because peace of mind shouldn’t wait. ## Quick Answers - **What is this?** eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 by eufy security - **How much does it cost?** € 42.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/107179234-eufy-security-entry-sensor-detects-opened-and-closed-doors-windows) ## Best For - eufy security enthusiasts ## Why This Product - Trusted eufy security brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Powerful 100dB Siren:** Deters intruders immediately with a loud siren triggered on your HomeBase, customizable to your preference. - • **Instant Intrusion Alerts:** Receive real-time smartphone notifications the moment a door or window is opened beyond 1.5 inches. - • **Effortless DIY Installation:** Peel, stick, or screw on in minutes—no tools or tech expertise required to secure your home. - • **Unmatched Battery Endurance:** 800 days of uninterrupted security with a single CR123A battery—set it and forget it. - • **Seamless, Invisible Protection:** Compact design blends effortlessly on any door or window frame for discreet monitoring. ## Overview The eufy Security Entry Sensor offers reliable indoor protection by detecting opened doors or windows and instantly alerting you via smartphone. Featuring a long-lasting 2-year battery, a powerful 100-decibel siren, and a sleek, compact design, it integrates seamlessly with eufy HomeBase S280 or S380 hubs. Easy to install and manage through the intuitive eufy app, this sensor ensures your home stays secure with minimal effort. ## Description Product Description Input sensor Reliable door and window monitoring eufy Security. Smart protected. Smart safe. - Reliable monitoring for complete peace of mind - Created by the Anker Team - famous for fantastic quality and innovation T8900 intrusion sensor FAQ and assistance 1. Are batteries included? - Yes, one CR123A battery is included. 2. Can I connect my own router to the eufy Security Sensor? - No, only the eufy Security HomeBase can be used for the intrusion sensor. 3. Is it possible to use it outdoors? - No, the material is not weatherproof and intended for indoor use only. 4. How do I know the battery is getting weak? - If the battery is less than 10%, a notification will be sent. 5. How do I install the sensor in the entrance area? - Step: Peel off the tape and stick or screw the sensor to the selected door or window. - Step: Attach the magnetic part to the door area or window area with the inscription "Magnet". - Note: Please check that the distance between magnet and sensor is less than 3.5 cm. ## Features - 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.*Push notifications with thumbnail previews require thumbnail preview images to be temporarily stored in the cloud. - Easy Installation: Just peel off the mounting tape and stick or screw the sensor onto the door or window you want to monitor. - What’s Included: Entry Sensor, CR123A Battery, Magnet, 3 x Mounting Screws, Owner's Manual. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07JJD6CFV | | Battery Description | Lithium | | Best Sellers Rank | 7,849 in DIY & Tools ( See Top 100 in DIY & Tools ) 8 in Home Security Door & Window Sensors | | Brand | eufy Security | | Colour | White | | Compatible Devices | Smartphone | | Control Method | App | | Country of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (2,788) | | EU Spare Part Availability Duration | 2 Years | | Included Components | Entry Sensor | | Item Dimensions L x W x H | 7.4L x 2.8W x 2.2H centimetres | | Item Weight | 0.15 Pounds | | Manufacturer | Anker | | Model Number | AK-T89003D3 | | Mounting Type | Door Mount | | Number of Batteries | 1 AAA batteries required. (included) | | Part Number | AK-T89003D3 | | Power source | Battery Powered | | Sensor Technology | Contact Sensor | | Size | Entry sensor | | Smart Home Compatibility | Smart Home Compatible | | Sound Level | 100 Decibels | | UPC | 848061046427 | | Unit Count | 1.0 count | ## Product Details - **Brand:** eufy Security - **Colour:** White - **Compatible devices:** Smartphone - **Power source:** Battery Powered - **Product dimensions:** 7.4L x 2.8W x 2.2H centimetres ## Images ![eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - Image 1](https://m.media-amazon.com/images/I/5161rwtCsHL.jpg) ![eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - Image 2](https://m.media-amazon.com/images/I/61cGbK08MzL.jpg) ![eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - Image 3](https://m.media-amazon.com/images/I/71tCQ58jYJL.jpg) ![eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - Image 4](https://m.media-amazon.com/images/I/610R+3KHH1L.jpg) ![eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - Image 5](https://m.media-amazon.com/images/I/61-IOWnSb5L.jpg) ## Questions & Answers **Q: Does this sensor work with the Homebase 2 that comes with the eufycam 2?** A: Yes, it works with the Homebase 2. **Q: Can this be used in an alexa routine as a trigger? E.g. door opens then Alexa announces and turns on a light.** A: No I can’t seem to get this working using. I can create a routine in Alexa and manually run it, but the trigger from the sensor doesn’t fire it. Googling seems to be missing functionality in their product. Gutted. **Q: Can the sensor be turned off completely? I mean there are any buttons on the sensor itself to turn it completely off?** A: No, there are no buttons on the sensor to turn it off. You can take the battery out if you want to disable it.... but the idea is to set the on/off condition using the app. Different alert modes can have different on/off settings. **Q: I used to get instant notification if it was open. It now only gives me a notification after a set time? Can I have an instant notification?** A: The developers seem to mess with the app a lot. I used to get notifications when my door sensors opened and closed. Now I only get them when the door opens. Sometimes it nevers registers as having closed. Very annoying. ## Frequently Bought Together - eufy Security, Entry Sensor, Detects Opened and Closed Doors or Windows, Sends Alerts, Triggers Siren, 2-Year Battery Life, Indoor-use Only, Requires HomeBase S280 or HomeBase S380 - eufy Security Home Alarm System Motion Sensor, 100° Coverage, 30 ft Detection Range, 2-Year Battery Life, Adjustable Sensitivity (HomeBase Required) - eufy Security Siren, 105 dB Wireless Alarm, IP65 Weatherproof, Remote Alerts, 2-Year Battery Life, HomeBase Required, Compatible with HomeBase S380 and S280, App Control, Easy to Install --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/107179234-eufy-security-entry-sensor-detects-opened-and-closed-doors-windows](https://www.desertcart.be/products/107179234-eufy-security-entry-sensor-detects-opened-and-closed-doors-windows) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-04*