---
product_id: 545637686
title: "Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS)"
brand: "tecknet"
price: "¥7187"
currency: JPY
in_stock: true
reviews_count: 13
category: "Tecknet"
url: https://www.desertcart.jp/products/545637686-door-alarm-sensor-window-alarms-sensors-2-in-1-alarm
store_origin: JP
region: Japan
---

# 2cm sensor gap trigger 100dB loud siren Batteries included, 36-month warranty Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS)

**Brand:** tecknet
**Price:** ¥7187
**Availability:** ✅ In Stock

## Summary

> 🚪🔔 Secure your space, silence your worries!

## Quick Answers

- **What is this?** Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS) by tecknet
- **How much does it cost?** ¥7187 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/545637686-door-alarm-sensor-window-alarms-sensors-2-in-1-alarm)

## Best For

- tecknet enthusiasts

## Why This Product

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

## Key Features

- • **Instant 100dB Siren Alert:** Deters intruders with a piercing alarm that activates immediately when doors or windows open beyond 2cm.
- • **Compact & Portable Security:** Miniature size fits discreetly and travels easily—take peace of mind wherever you go.
- • **Effortless Wireless Installation:** Stick-on design means no tools or wiring—secure your home in minutes, anywhere from doors to cabinets.
- • **Customizable 3-Level Volume Control:** Adjust the alarm or chime volume to suit your environment—perfect for apartments, offices, or shops.
- • **Versatile 2-in-1 Alarm & Chime Modes:** Choose between a loud alarm for security or a gentle chime as a reminder, plus an off mode for silent monitoring.

## Overview

The TECKNET Door Alarm Sensor is a wireless, easy-to-install security device featuring a powerful 100dB siren triggered by a 2cm gap, with 3 volume levels and modes (alarm, chime, off). Designed for versatile use on doors, windows, and more, it comes with included batteries and a 36-month warranty, making it a reliable, compact solution for home, office, or travel security.

## Description

This 3-piece door alarm offers versatile security features, including siren, chime, or silent mode, plus 3-level volume for customizable home protection.

Review: Great value for money - Great alarms, easy to install and great value for money. Alarm/chime volume is perfect and can be easily adjusted. Forgot I'd put them on the doors last night and nearly deafened myself this morning when trying to leave for work so they definitely work!
Review: Excellent value, works as intended - Excellent value. Comes ready to install, no faffing around with apps and batteries. I do recommend planning first how you’re going to place the parts on the window as I ended up having to put my sensor “sideways” rather than using the strip placement intended at the back. Very loud, plenty loud enough to put off any potential burglar.

## Features

- Quick Alarm & 3 Modes: The "Alarm" mode will immediately activate a continuous and super strong siren when the sensor and the alarm are separated by more than 2 cm until they are back together. In "Chime" mode, the door alarm will emit a brief audible alarm, serving as a gentle reminder. If you prefer silence, simply switch to the "Off" mode.
- 3-level volume control: The door alarms for your home can also be used as window alarms for security, pool alarms, shed alarms, garage alarms, or sliding door alarms. TECKNET door sensors with 3-level volume control are the perfect solution for apartments, mobile homes, offices, hotels, stores, and more.
- Easy to Install: Just use the attached stickers to gently install the burglar alarm on various parts of the house, such as doors, windows, cabinets, drawers, gates, etc.! (Note: Keep the installation area clean and ensure that the sensor is installed within 2 cm from the arrow side of the alarm.)
- Mini and Portable: With its mini design, this wireless ring alarm won't take up any extra space. You can easily carry it in any backpack when you go out. (If the alarm isn't working, check if it's in OFF mode or if the batteries need replacing.)
- 36 Months Warranty: If you encounter any problems in using the product, please feel free to contact our professional customer service team, enjoying TECKNET 36 Months Warranty (Registered Only)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BY8T29SJ |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Battery description | Alkaline battery |
| Best Sellers Rank | 3,013 in DIY & Tools ( See Top 100 in DIY & Tools ) 2 in Home Security Door & Window Sensors |
| Control method | Touch |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,675) |
| Date First Available | 13 Mar. 2023 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 150 g |
| Item model number | TK-WA801 |
| Manufacturer | TECKNET |
| Mounting type | Door Mount |
| Noise level | 100 Decibels |
| Product Dimensions | 9.8 x 3.5 x 1 cm; 150 g |
| Sensor technology | Contact Sensor |
| Style | White 3 PCS |

## Product Details

- **Brand:** TECKNET
- **Colour:** White
- **Compatible devices:** Smartphone, tablet
- **Power source:** Battery Powered
- **Product dimensions:** 9.8L x 3.5W x 1H centimetres

## Images

![Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS) - Image 1](https://m.media-amazon.com/images/I/614gVDIi6BL.jpg)

## Questions & Answers

**Q: Is it easy to install this door alarm sensor?**
A: Absolutely! Just position the sensor within 0.5 inches from the arrow side of the alarm and securely attach it using the double-sided adhesive. Prior to installation, make sure to clean the designated area as dust can impact the adhesive's stickiness.

**Q: Is the sound of this door and window alarm loud enough to attract attention?**
A: Absolutely! The 100-decibel alarm sound is very loud, and as soon as it goes off, it grabs my attention and prompts me to take swift action.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great value for money
*by N***. on 20 January 2026*

Great alarms, easy to install and great value for money. Alarm/chime volume is perfect and can be easily adjusted. Forgot I'd put them on the doors last night and nearly deafened myself this morning when trying to leave for work so they definitely work!

### ⭐⭐⭐⭐⭐ Excellent value, works as intended
*by A***K on 30 December 2025*

Excellent value. Comes ready to install, no faffing around with apps and batteries. I do recommend planning first how you’re going to place the parts on the window as I ended up having to put my sensor “sideways” rather than using the strip placement intended at the back. Very loud, plenty loud enough to put off any potential burglar.

### ⭐⭐⭐⭐⭐ Great!
*by R***N on 20 June 2025*

After noticing damage to my door someone’s done trying to break into my flat last night, I ordered this. Very easy to set up and as it’s adhesive, no damage will be done to the door which is great to know as I rent. You can turn it off which is great so you know you can have full control over when it is on. It’s more than loud enough to alert you and to scare off anyone if they were to break in even on the lowest setting which is what I have mine on in this video. It comes in a pack of 3 which is nice incase one breaks or the adhesive strips lose their stickiness. Whether you’re in a flat like me or a house and want to feel that extra bit of security for whatever reason, these seem like a good and cheap choice.

## Frequently Bought Together

- TECKNET Door Alarm Sensor, Window Alarms Sensors, 2-in-1 Alarm & Chime, 3-level Volume Control, Door Sensor for Home Security, Wireless Burglar Alarms for House, Shop, Office, Garage (3 PCS)
- Energizer LR44 Batteries (12 Pack) - A76 Battery Type - 3 Year Shelf Life - Zero Mercury, Alkaline Power [Amazon Exclusive]

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-03*