---
product_id: 405998855
title: "smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream"
brand: "smars"
price: "£30.08"
currency: GBP
in_stock: false
reviews_count: 5
url: https://www.desertcart.co.uk/products/405998855-smars-plastic-wireless-door-window-open-alert-alarm-home-security
store_origin: GB
region: United Kingdom
---

# 110dB piercing siren Replaceable button cell battery No-drill adhesive install smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream

**Brand:** smars
**Price:** £30.08
**Availability:** ❌ Out of Stock

## Summary

> 🚪🔔 Stay one step ahead—secure your space with a siren that speaks volumes!

## Quick Answers

- **What is this?** smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream by smars
- **How much does it cost?** £30.08 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/405998855-smars-plastic-wireless-door-window-open-alert-alarm-home-security)

## Best For

- smars enthusiasts

## Why This Product

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

## Key Features

- • **Piercing 110dB Alarm:** Instantly alerts with a sharp siren that demands attention.
- • **Compact & Durable Design:** Sleek cream plastic housing resists heat, corrosion, dust, and insects.
- • **Effortless No-Drill Setup:** Stick it, secure it, protect instantly—no tools required.
- • **Replaceable Battery Power:** Keep protection uninterrupted with easy battery swaps.
- • **Bonus Warning Sticker Included:** Deters intruders before they even try—security starts with presence.

## Overview

The smars® Wireless Door Window Open Alert Alarm is a compact, cream-colored security device designed for easy adhesive installation without drilling. Featuring a powerful 110-decibel siren triggered by a magnetic contact sensor, it ensures immediate alerts when doors or windows open. Built with durable, corrosion-resistant plastic, it includes replaceable button cell batteries and a warning sticker to enhance home or office security.

## Description

New and high quality .Environmental economy, high temperature resistant, corrosion resistant. Convenience in installation. Super environmental suitability and stability. Dustproof and insect prevention .Easily mounted by adhesive. Type to window or door. Magnetic sensor switch detects entry protecting your home or office whether you are in or out. Warning door / window sticker is supplied free in package Specifications Main frame size 2.44" x 1.18" x 0.79".Magnetic box size 2.17" x 0.43" x 0.43".Power supply 3 x 1.5V LR44 button cells (included).Button Chime, off, alarm. Sensor type Alarm, Alarm type Sound. Material Plastic-Color White

Review: Very nice product, I have installed at sliding door. Alarm is very loud. Good performance and very easy to install
Review: Useless..it's a poor quality product..the on and off switch stopped working just in a week after sticking it to the door...i don't recommend this to anyone..

## Features

- Easy installation: no need of drill, just stick to door/window by using adhesive
- Sharp ear piercing sound: inbuilt siren give sharp siren sound as soon as door/window gets opened
- Replaceable battery: once battery is weak just replace them by opening cover

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08LP1DL24 |
| ASIN  | B08LP1DL24 |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery description | Alkaline |
| Color | cream |
| Control method | Touch |
| Customer Reviews | 3.6 3.6 out of 5 stars (468) |
| Customer reviews | 3.6 3.6 out of 5 stars (468) |
| Date First Available | 27 August 2021 |
| Date First Available  | 27 August 2021 |
| Item Weight | 40 g |
| Item model number | Alarm-variation01 |
| Item model number  | Alarm-variation01 |
| Manufacturer | msrs sales |
| Manufacturer  | msrs sales |
| Material | Plastic |
| Mounting type | Door Mount |
| Noise level | 110 Decibels |
| Number Of Pieces | 2 |
| Product Dimensions | 10 x 10 x 10 cm; 40 g |
| Product Dimensions  | 10 x 10 x 10 cm; 40 g |
| Sensor technology | Contact Sensor |
| UPC | 808218478051 |
| Voltage | 1.5 Volts |
| tech_spec_battery_description_toys | Alkaline |

## Product Details

- **Brand:** smars
- **Colour:** cream
- **Compatible devices:** Home Security System
- **Power source:** Battery Powered
- **Product dimensions:** 30L x 20W x 62H millimeters

## Images

![smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream - Image 1](https://m.media-amazon.com/images/I/31IUrQnYiFL.jpg)
![smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream - Image 2](https://m.media-amazon.com/images/I/4187ojQ2LAL.jpg)
![smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream - Image 3](https://m.media-amazon.com/images/I/41JbZkGRZgL.jpg)
![smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream - Image 4](https://m.media-amazon.com/images/I/41UkZWAq3gL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***L on 8 November 2023*

Very nice product, I have installed at sliding door. Alarm is very loud. Good performance and very easy to install

### ⭐ Review
*by A***R on 26 August 2025*

Useless..it's a poor quality product..the on and off switch stopped working just in a week after sticking it to the door...i don't recommend this to anyone..

### ⭐⭐⭐ Review
*by R***L on 26 January 2023*

Not working properly

## Frequently Bought Together

- smars ® Plastic Wireless Door Window Open Alert Alarm Home Security System Siren | cream
- Blackt Electrotech (BT51D) 120dB 4in1 Wireless Door and Window Alarm Sensor for Home and Property 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.co.uk/products/405998855-smars-plastic-wireless-door-window-open-alert-alarm-home-security](https://www.desertcart.co.uk/products/405998855-smars-plastic-wireless-door-window-open-alert-alarm-home-security)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-18*