--- product_id: 277011789 title: "120 DB Loud Door and Window Open Alarm Sensor 3 Pack for Kids, Dementia Patients Safety, Burglar Anti-Theft Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe" brand: "flyoukki" price: "€ 42.27" currency: EUR in_stock: true reviews_count: 6 category: "Flyoukki" url: https://www.desertcart.be/products/277011789-120-db-loud-door-and-window-open-alarm-sensor-3 store_origin: BE region: Belgium --- # 750 ft wireless range 120 dB piercing alarm 6-12 months battery life 120 DB Loud Door and Window Open Alarm Sensor 3 Pack for Kids, Dementia Patients Safety, Burglar Anti-Theft Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe **Brand:** flyoukki **Price:** € 42.27 **Availability:** ✅ In Stock ## Summary > 🚨 Stay one step ahead—protect your space with a 120 dB warning roar! ## Quick Answers - **What is this?** 120 DB Loud Door and Window Open Alarm Sensor 3 Pack for Kids, Dementia Patients Safety, Burglar Anti-Theft Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe by flyoukki - **How much does it cost?** € 42.27 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/277011789-120-db-loud-door-and-window-open-alarm-sensor-3) ## Best For - flyoukki enthusiasts ## Why This Product - Trusted flyoukki brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek & Discreet:** Ultra-slim design fits seamlessly on doors, windows, cabinets, or offices. - • **Long-Lasting Power:** Batteries last up to a year with low-battery alerts—security without the hassle. - • **Unmatched Loudness:** 120 dB alarm audible over 750 feet—stop intruders in their tracks! - • **Complete Safety Kit:** Includes 3 alarms, anti-noise earplugs, and user manual for instant peace of mind. - • **Effortless Wireless Setup:** No wiring needed; install anywhere with included adhesive tape in minutes. ## Overview The Flyoukki 120 dB Loud Door and Window Open Alarm Sensor 3-Pack delivers powerful wireless security with an ultra-loud alarm audible up to 750 feet. Designed for easy, no-wiring installation using included adhesive tape, each sensor runs on 3 LR44 batteries lasting 6-12 months with low battery indicators. Its sleek, compact form factor fits discreetly on doors, windows, cabinets, or business entrances, making it ideal for protecting children, dementia patients, or preventing burglaries. The package includes 3 alarms, anti-noise earplugs, and a user manual, offering a comprehensive, low-maintenance security solution. ## Description Features: Loud Alarm & Earplugs: 120dB alarm setting alerts of unauthorized entry. A pair of anti-noise earplugs are included in the package to protect your ears when installing. Batteries Included: 3 LR44 batteries are included in each sensor which can be last for 6-12 months. The indicated light will flash when batteries are low. Double-sided Tape: Comes with double-sided tape to mount the alarm. The compact design allows for easily installation. Using Conditions: (1) Please make sure the surface of the door or window and the frame are smooth and clean. (2) The minimum activation distance of alarm is 0.6 inch (15mm), please check the window or door to make sure it is flush or it has a right angle to make the sensor and magnetic part close enough—under 0.6 inch(15mm). (3) Although the alarm serves as a good reminder for swimming pool doors. It is not UL-2017 compliant. So, in some states it cannot help you pass a pool inspection. (4) The alarm is not volume adjustable and it has no time delay function. NOTE: Although the alarm serves as a good reminder for swimming pool doors. It is not UL-2017 compliant. So in some states it cannot help you pass a pool inspection. MORE INFORMATION: PACKAGE INCLUDE: 3 * Alarms with tapes (Batteries included), 2 * Anti-noise Ear plugs, 1 * User manual BATTERY LIFE: Batteries lasting between 6-12 months make these low maintenance devices perfect to install and provide you with constant protection you want. SMALL & ULTRA SLIM: The sensor part is 2.9*1.5*0.37 inches even smaller than a credit card, and the magnetic part is 1.25*0.37*0.37 inches. DOUBLE-SIDED TAPES: Simply use the adhesive provided and tape it to wherever you need! Windows, doors, and entrances simple and straightforward with the alarm. Review: Not working - I bought 2 packs on this and it didn’t work. When you turn it on even there’s no sensor it’s making alarm. Review: Very loud. - Very loud, and straightforward, and compact. ## Features - LOUD ALARM: The 120 DB security alarm is perfect for signaling to you when there is an unwanted entry. Audible at over 750 feet it sounds loud so the person knows they should stop what they are doing. Great for prevention, protect your children’s rooms or stop anyone from sneaking out or in. - WIRELESS ALARM SENSOR: No wiring is necessary and 3 LR44 batteries are included in each device. Made to last 6 - 12 months these batteries in the alarms will be charged for extended periods of time. When it’s time to change, you’ll know. With the intuitive low battery indicator you can easily find out when you’ll have to change the batteries. - EASY TO INSTALL: The wireless security alarms can be installed anywhere with an opening. Simply use the adhesive provided and tape it to wherever you need! Windows, doors, and entrances simple and straightforward with the alarm. The minimum distance for the device to work is 8mm (0.3 inches), so when installing make sure to get both pieces of the alarm as close as possible. - SLEEK DESIGN FOR HOUSE- With an ultra slim build and sleek design these alarms can be put easily wherever you need them. Great for attaching to house doors, all types of apartments, and cabinet or office, put them where you see fit. They may be discreet and simple to install but don’t be deceived these alarms pack a punch, ready to deter any unwanted actions. - PACKAGE INCLUDED: 3 * Alarms with tapes (Batteries included), 2 * Anti-noise Ear plugs, 1 * User manual. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07RR7D2VK | | Audible Noise | 120 Decibels | | Battery Description | Alkaline | | Battery description | Alkaline | | Best Sellers Rank | #8,126 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Home Security Door & Window Sensors | | Brand | Flyoukki | | Color | White | | Colour | White | | Compatible Devices | Home Security System | | Compatible devices | Home Security System | | Control Method | Touch | | Customer Reviews | 4.3 out of 5 stars 3,130 Reviews | | Item Dimensions L x W x H | 38L x 9W x 74H millimeters | | Manufacturer | Flyoukki | | Maximum Range | 750 Feet | | Mfr Part Number | MSA-820 | | Model Number | MSA-820 | | Mounting Type | Door Mount | | Number of Batteries | 3 Nonstandard Battery batteries required. | | Number of Items | 3 | | Power Source | Battery Powered | | Power source | Battery Powered | | Product dimensions | 38L x 9W x 74H millimeters | | Sensor Technology | Contact Sensor | | UPC | 619317730816 061931773081 | ## Product Details - **Brand:** Flyoukki - **Colour:** White - **Compatible devices:** Home Security System - **Power source:** Battery Powered - **Product dimensions:** 38L x 9W x 74H millimeters ## Images ![120 DB Loud Door and Window Open Alarm Sensor 3 Pack for Kids, Dementia Patients Safety, Burglar Anti-Theft Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe - Image 1](https://m.media-amazon.com/images/I/51l1R38EJrL.jpg) ## Questions & Answers **Q: I am looking for an alarm that shrieks when the door is opened and stops when the door is shut. Is this it? Or is there such an alarm?** A: Yes, this is the alarm you are looking for. **Q: Can you set it for a certain amount of time before the alarm goes off? (IE the alarm goes off after doors been open 30 min)** A: No. It is simply a small device that has on/off switch. Works great and is very loud. **Q: I will be traveling with my husband who has early onset Alzheimer’s. Would this be good to use for the hotel? Does it leave a mark when removing?** A: They work good. Ive used them when traveling. They dont leave hardly a y noticible residue. If they do. A warm wet cloth will wipe it right up. Have to get some type of extra velcro or double sided tape. Becareful what type you buy as an alternate ahdesive or tape may leave more residue **Q: Can this be operated remotely ?** A: No. It has to be turned off manually, or it will turn off when the battery goes down.I had to manually turn it off. You have to be home to turn this item off. I returned this item because it can do damage to your ear drums. I will say I was given no problem with returning the item. I ordered the Bunker Hill Wireless system, and it works for me. ## Customer Reviews ### ⭐ Not working *by R***O on 4 December 2024* I bought 2 packs on this and it didn’t work. When you turn it on even there’s no sensor it’s making alarm. ### ⭐⭐⭐⭐⭐ Very loud. *by K***S on 12 July 2026* Very loud, and straightforward, and compact. ### ⭐⭐⭐⭐⭐ Loud. Effective. *by L***I on 8 April 2026* Much better than a previous set I purchased. These are very loud. I use them for security on our doors with our autistic son who like to run, the noise is so loud it startles him into shutting the door and he doesnt run anymore. Stopped checking the doors even after a couple tries and being startled. Very effective. ## Frequently Bought Together - 120 DB Loud Door and Window Open Alarm Sensor 3 Pack for Kids, Dementia Patients Safety, Burglar Anti-Theft Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe - 120 DB Loud Door and Window Open Alarm Sensor 5 Pack for Kids, Dementia Patients Safety, Wireless Security Alarms Keep Your Home, Pool, Cabinet, Business Safe --- ## 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/277011789-120-db-loud-door-and-window-open-alarm-sensor-3](https://www.desertcart.be/products/277011789-120-db-loud-door-and-window-open-alarm-sensor-3) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-10-30*