--- product_id: 79451408 title: "Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4)" brand: "noopel" price: "S$48" currency: SGD in_stock: true category: "Noopel" url: https://www.desertcart.sg/products/79451408-door-window-alarm-4-pack-noopel-home-security-ultra-slim store_origin: SG region: Singapore --- # Ultra-slim 1.5in sensor 120dB piercing alarm Batteries included, low power alert Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4) **Brand:** noopel **Price:** S$48 **Availability:** ✅ In Stock ## Summary > 🚪🔒 Secure your space with silent style and loud protection! ## Quick Answers - **What is this?** Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4) by noopel - **How much does it cost?** S$48 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/79451408-door-window-alarm-4-pack-noopel-home-security-ultra-slim) ## Best For - noopel enthusiasts ## Why This Product - Trusted noopel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless DIY Setup:** No wiring or screws—just peel, stick, and secure your home in minutes. - • **Instant Intruder Alert:** 120dB alarm blasts loud enough to stop any unwanted entry in its tracks. - • **Sleek & Discreet Design:** Ultra-slim magnetic sensor fits seamlessly on doors and windows without ruining your aesthetic. - • **Smart Battery Management:** Includes 3 LR44 batteries with low battery indicator so you’re never caught off guard. - • **Versatile Safety Solution:** Perfect for homes, offices, garages, and even keeping kids safe from wandering off. ## Overview The Noopel Door Window Alarm 4 Pack offers a powerful 120dB wireless magnetic sensor system designed for ultra-slim, easy installation with included batteries. Ideal for home and office security, it instantly alerts you to unauthorized entry with a piercing alarm and LED indicator. Its adhesive mount and low battery alert make it a hassle-free, versatile solution to protect your loved ones and property. ## Description Product description Noopel Window and Door entry Alarm provides a simple-to-use, cost-effective security solution to protect you and your family against home invasions thanks to the 120-decibel alarms, loud enough to make a would-be intruder think twice about entering through your doors or windows. Also Perfect for preventing your children from opening doors they shouldn’t. There is no need for expensive alarm systems, our high quality alarm adapts to different environments. It is perfect for windows, doors, office, balconies, stairs and more. You can even use it to keep a sleepwalker inside and prevent any accidents. To protect your loved ones, security is one of the best surprises so buy one for every door and window today and show them you care.Prior to purchase, please verify that the door or window frame provides sufficient space to accommodate the magnetic sensor, with a minimum width of 0.5 inches. Safety Warning Not suitable for children under 3 years. For use under adult supervision. ## Features - The door alarm emits a 120 dB sound, and the LED light activates when a door or window is opened more than 1 cm. This Noopel alarm system for home security is designed to quickly deter intruders and alert residents. - Prevent children going out the house without notice.Also ideal entry warning for your home, office, apartment, garage and so on. - Ultra-thin door and window alarm with 2 adjustable settings (off/on).3xLR44 batteries included. - Easy installation, No wiring needed! No screws needed! Just affix the provided stickers to various parts of the house, such as doors, windows, cabinets, drawers and gates. (Note: Keep the installation area clean and ensure that the sensor is installed within 1 cm from the arrow side of the burglar alarm.) - Ultra-sensitive also Low battery indicator to check battery life.This is a PERFECT AFFORDABLE compliment for your home security. Prior to purchase, please verify that the door or window frame provides sufficient space to accommodate the magnetic sensor, with a minimum width of 0.5 inches. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07G7WVWZ1 | | Battery Description | battery_type_LR44 | | Best Sellers Rank | 3,616 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Home Security Door & Window Sensors | | Brand | Noopel | | Colour | Silver | | Compatible Devices | Home Security System | | Control Method | Touch | | Country of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (2,021) | | Item Dimensions L x W x H | 38L x 10W x 74H millimetres | | Item Weight | 32 Grams | | Manufacturer | Noopel | | Model Number | MCJBQ820 | | Mounting Type | Adhesive Mount | | Number of Batteries | 3 LR44 batteries required. (included) | | Number of Items | 4 | | Number of Packs | 4 | | Part Number | XUJJ20201111HJQ | | Power source | Battery Powered | | Sensor Technology | Contact Sensor | | Size | 1.5 x 0.4 x 2.9 inches | | Sound Level | 120 Decibels | | UPC | 666354348979 | | Unit Count | 4.0 count | ## Product Details - **Brand:** Noopel - **Colour:** Silver - **Compatible devices:** Home Security System - **Power source:** Battery Powered - **Product dimensions:** 38L x 10W x 74H millimetres ## Images ![Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4) - Image 1](https://m.media-amazon.com/images/I/616ssM1e9pL.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Questions & Answers **Q: Does it work with sliding doors?** A: I would say yes - the sensor and magnetic contact are separate - when sticking on try without removing the adhesive backing on either the magnet or sensor to get the correct position - when you have mark lightly with a pencil and then apply - mine work great and still give me a shock (with the noise) when i forget to flick the switch off. Hope it works well for you **Q: When i installed the alarm on my door, i switched it on and it is continously making the alarm sound?? What do i do to stop it?** A: Hi Ashley, possible because the gap between the alarm and little strip is larger than 10mm. if so, the only way to stop it is to switch off. **Q: Do both sections have to be at the same level as my door has a trim/lip which is 1.5cm higher** A: They have to be level and in line I glued a piece of wood on frame to line up works great **Q: Battery life since august 21 I have changed the batteries 3 times .The alarm has never been triggered, except when installed** A: I can only say that my alarms are all working OK and the batteries i have never changed since arriving about 4 months ago. Do you check they are working on a weekly period. If you have a spare 1 then leave set up in your home side by side. And check to see what's going on... ## Frequently Bought Together - Door Window Alarm 4 Pack Noopel Home Security Ultra-Slim Wireless Magnetic Sensor Burglar Anti-theft 120DB Alarm with Batteries included - DIY EASY to Install (4) - PATLOCK French Door, Patio and Conservatory Security Lock for Double Doors Fitted with 2 Internal Horizontal Handles - Ring Battery Video Doorbell (2024 release) | DIY Wireless Video Doorbell Camera I Head-To-Toe View, HD Video | Easy to install (5 min) | With Built-in Battery I 30-day free trial of Ring Home --- ## 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.sg/products/79451408-door-window-alarm-4-pack-noopel-home-security-ultra-slim](https://www.desertcart.sg/products/79451408-door-window-alarm-4-pack-noopel-home-security-ultra-slim) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-10*