--- product_id: 297270113 title: "EUFY T8900 Entry Sensor (White)" brand: "eufy security" price: "HK$26" currency: HKD in_stock: false reviews_count: 1 url: https://www.desertcart.hk/products/297270113-eufy-t8900-entry-sensor-white store_origin: HK region: Hong Kong --- # Smartphone app control 100dB siren alert 2-year battery life EUFY T8900 Entry Sensor (White) **Brand:** eufy security **Price:** HK$26 **Availability:** ❌ Out of Stock ## Summary > 🚪🔒 Secure your space, stay effortlessly connected. ## Quick Answers - **What is this?** EUFY T8900 Entry Sensor (White) by eufy security - **How much does it cost?** HK$26 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/297270113-eufy-t8900-entry-sensor-white) ## 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 - • **Effortless Installation:** Peel, stick, and secure with included mounting screws—no tools or hassle required for instant protection. - • **Instant Intruder Alerts:** A piercing 100-decibel siren coupled with real-time smartphone notifications keeps you one step ahead of break-ins. - • **Sleek, Minimalist Design:** Compact ASA composite sensor fits seamlessly on any door or window frame without disrupting your aesthetic. - • **Unmatched Battery Endurance:** Enjoy 730 days of uninterrupted security with a single CR123A battery—set it and forget it. - • **Trusted Manufacturer Warranty:** Backed by a 1-year warranty from Anker Innovations Ltd, ensuring peace of mind with every purchase. ## Overview The EUFY T8900 Entry Sensor is a compact, ASA composite contact sensor designed for doors and windows, featuring a 2-year battery life, a powerful 100-decibel siren, and seamless smartphone app integration. Easy to install with included mounting hardware, it offers reliable intrusion detection backed by a 1-year manufacturer warranty. ## Description 2-Year battery life: one battery provides 730 days of monitoring. For doors and windows: small and compact design fits onto any door or window frame. 100-Decibel siren: if a forced entry is detected, a siren as loud as a jackhammer (100-decibel) will be triggered on homebase and you’ll be notified instantly on your smartphone. Easy installation: just peel off the mounting tape and stick the sensor onto the door or window you want to monitor. ## Features - Material: cutting-edge ASA composite material - Package Contents: Entry Sensor; CR123A Battery; Magnet; 03 Mounting Screws; 01 Warranty Card; Owner's Manual - 1 year warranty provided by the manufacturer from date of purchase - Entry sensor protect your doors and windows from break-ins ## Technical Specifications | Specification | Value | |---------------|-------| | Voltage | 3 Volts | | Control Method | App | | Noise Level | 100 Decibels | | Mounting Type | Door Mount | | Sensor Technology | Contact Sensor | | UPC | 848061058666 | | Global Trade Identification Number | 00848061058666 | | Manufacturer | Anker Innovations Ltd | | Item model number | T8900 | | Product Dimensions | 7.4 x 2.8 x 2.2 cm; 68 g | | ASIN | B07GJJZZ3G | ## Product Details - **Colour:** White - **Brand:** eufy Security - **Power Source:** Battery Powered - **Compatible Devices:** Smartphone - **Number of Batteries:** 1 Lithium Ion batteries required. (included) ## Images ![EUFY T8900 Entry Sensor (White) - Image 1](https://m.media-amazon.com/images/I/5161rwtCsHL.jpg) ![EUFY T8900 Entry Sensor (White) - Image 2](https://m.media-amazon.com/images/I/61MvOb6Le2L.jpg) ![EUFY T8900 Entry Sensor (White) - Image 3](https://m.media-amazon.com/images/I/712Wx1pqmvL.jpg) ![EUFY T8900 Entry Sensor (White) - Image 4](https://m.media-amazon.com/images/I/61PyqNLdy+L.jpg) ![EUFY T8900 Entry Sensor (White) - Image 5](https://m.media-amazon.com/images/I/61fzKOXlOHL.jpg) ## Questions & Answers **Q: Notification if a door is left open? Is there a way to set a delay lets say 5 mins so if the door left open for 5 min or more, it notifies via alert?** A: Yes, after 5 mins and many other options. Please see the video. **Q: How many eufy security ***entry sensors** can be used per base station? how many cameras can i use simultaneously with said sensors?** A: One HomeBase can support up to 16 cameras and 16 entry sensor. **Q: Does the updated homebase 2 firmware expose these sensors to apple's homekit?** A: We are sorry that these sensors cannot support homekit. **Q: If power is lost and you have the plus monitoring service will you get notified of the power outage?** A: I am going to say no. It has to check in with them over the Internet and there could be numerous reasons that communications don't reach them. I would be surprised if it does actually check in regularly instead of just waiting to send an alarm alert. On my old alarm it has a battery backup and uses the landline phone to call in issues. So, if the power goes out it will use the battery backup to make a landline call and then the monitoring station will call me. Usually when the battery is low. I could be wrong but it's unlikely this configuration could support that notification. If you have a UPS that keeps your internet powered up then it, or the PC, can be configured to send an alert then it goes to battery. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good quality *by M***U on 11 December 2021* Sound quality is amazing ## Frequently Bought Together - 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 - eufy Security 5-Piece Home Alarm Kit, Home Security System, Keypad, Motion Sensor, 2 Entry Sensors, Home Alarm System, Control from The App, Links with eufyCam, Optional 24/7 Protection - 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 --- ## 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.hk/products/297270113-eufy-t8900-entry-sensor-white](https://www.desertcart.hk/products/297270113-eufy-t8900-entry-sensor-white) --- *Product available on Desertcart Hong Kong* *Store origin: HK* *Last updated: 2026-04-25*