---
product_id: 59779087
title: "Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4"
brand: "hendun"
price: "€ 41.20"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/59779087-wireless-home-security-burglar-alarm-magnetic-sensor-door-window-alarm
store_origin: FI
region: Finland
---

# 110dB super loud alarm 3x LR44 batteries included, long-lasting Self-adhesive, tool-free installation Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4

**Brand:** hendun
**Price:** € 41.20
**Availability:** ✅ In Stock

## Summary

> 🚪🔔 Secure your space, protect your peace of mind!

## Quick Answers

- **What is this?** Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4 by hendun
- **How much does it cost?** € 41.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/59779087-wireless-home-security-burglar-alarm-magnetic-sensor-door-window-alarm)

## Best For

- hendun enthusiasts

## Why This Product

- Trusted hendun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Peel-and-stick design means no tools, no hassle—secure any door or window in minutes.
- • **Compact & Discreet:** Small, sleek square design fits seamlessly on doors, windows, pool gates, and more.
- • **Long-Lasting Power:** Includes 3 LR44 batteries with low battery indicator for uninterrupted protection.
- • **Instant Intruder Alert:** 110dB alarm that instantly deters unwanted guests and alerts neighbors.
- • **Versatile Safety Modes:** Switch between chime for kids/guests and full alarm for security.

## Overview

This Wireless Home Security Burglar Alarm features a piercing 110dB sound to deter intruders and alert neighbors. Equipped with a magnetic contact sensor, it offers dual modes: a chime for monitoring kids or guests, and a loud alarm for security breaches. The compact, self-adhesive design allows quick installation on doors, windows, pool gates, and more. Powered by 3 included LR44 alkaline batteries with a low battery indicator, it ensures reliable, long-lasting protection.

## Description

Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4

## Features

- Loud 110dB-enough to scare the intruder or notify neighbors.Prevent Robbery.
- CHIME MODE - is ideal to prompt you when child, guests or dementia patients are opening the door.
- ALARM ACTIVATED - when the parts are separated, recombined stops.
- EASILY INSTALLATED - in pool doors/refrigerator/drawer/freezers/interior door for kids safety. battery can last longer.
- RELIABLE AND GREAT VALUE - 3xLR44 batteries included, also Low battery indicator.Value for money home security products. If you have any questions, please feel free to contact us. We are always here.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery Description | Alkaline |
| Number of Batteries | 3 LR44 batteries required. (included) |
| Voltage | 4.5 Volts |
| Control Method | Touch |
| Noise Level | 110 dB |
| Mounting Type | self-adhesive |
| Sensor Technology | Contact Sensor |
| UPC | 664248632432 |
| Manufacturer | Changzhou Hengdun Electronic Technology Co Ltd |
| Part Number | SF19 |
| Item Weight | 1.25 ounces |
| Product Dimensions | 1.97 x 1.57 x 0.59 inches |
| Item model number | SF19 |
| Batteries | 3 LR44 batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Size | small |
| Shape | Square |
| Installation Method | Self-Adhesive |
| Item Package Quantity | 1 |
| Switch Style | Slide switch |
| Special Features | Easy to Install |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Description Pile | Alkaline |

## Product Details

- **Color:** White
- **Brand:** HENDUN
- **Power Source:** Battery Powered
- **Compatible Devices:** Home Security System
- **Product Dimensions:** 1.97"L x 1.57"W x 0.59"H

## Images

![Wireless Home Security burglar alarm, Magnetic Sensor Door Window Alarm, Super Loud 110dB, Pool Door Alarm for Kids Pack of 4 - Image 1](https://m.media-amazon.com/images/I/71k4MKWbGZL.jpg)

## Questions & Answers

**Q: Can someone please explain how to use the chime or doorbell mode? No matter what I do I can’t get them to set right.**
A: The description may not be very clear. But it's really switchable. Let me give you more details.
Push the switch in the OFF position (down), open the batteries box, take out the battery, reload the batteries, and cover the batteries cover. PUT THE MAGNET CLOSE TO THE HOST. 
Push the switch to ON position (up), then you will hear the first sound  (default mode), which is alarm mode. 
Within 3 seconds, when you push the switch from OFF  to ON, you will hear the second sound-continuous alarm mode;
Within 3 seconds, when you push the switch from OFF  to ON,  you will hear the third sound-reminding closing mode; 
Within 3 seconds, when you push the switch from OFF  to ON, you will hear the fourth sound-the doorbell mode.
At this time, separate the small magnet, will emit a doorbell sound.
After the mode has been set, if the switch is switched on to OFF again, the sound mode will be restored to the default alarm mode. In order to change the sound mode, it needs to be reset according to the above method.

**Q: Are these packaged separate?**
A: Yes, there are four separate packages.

**Q: Our freezer door was left open again. would this work to let us know it was left open. can i turn it off when i need to get into the freezer?**
A: If you turn it off to open the freezer and don’t turn it back on it won’t help remind you to close it. 
If you choose to keep it on it will make a sound (dependent on the setting you have it on) until the door is shut again.

**Q: can we get new batteries after it stop working?**
A: Thank you for your question. 
When the product arrives, three AG13(LR44)  batteries are combined. It's not a special battery. this is it, https://www.amazon.com//dp/B07Q16ZPFC .
When you need to replace the batteries, you only need to put in three separate batteries.
 I hope the above can help you.

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-09*