---
product_id: 451884856
title: "Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack)"
brand: "aoauto"
price: "HK$137"
currency: HKD
in_stock: true
reviews_count: 9
category: "Aoauto"
url: https://www.desertcart.hk/products/451884856-magnetic-reed-switch-wired-door-window-contact-sensor-micro-normally
store_origin: HK
region: Hong Kong
---

# 16-23mm transmitting distance 10W rated power Includes screws & 3M tape Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack)

**Brand:** aoauto
**Price:** HK$137
**Availability:** ✅ In Stock

## Summary

> 🔒 Elevate your smart security game with invisible precision!

## Quick Answers

- **What is this?** Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack) by aoauto
- **How much does it cost?** HK$137 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/451884856-magnetic-reed-switch-wired-door-window-contact-sensor-micro-normally)

## Best For

- aoauto enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Ultra-small 23x14x6mm size fits discreetly on any door or window frame.
- • **Effortless Installation:** Comes with 4 adhesive tapes and 8 screws for quick, no-fuss mounting.
- • **Precision Detection Range:** Magnet triggers switch within 16-23mm for accurate, tamper-proof sensing.
- • **Seamless Security Activation:** Normally Open design ensures your system only triggers when it matters.
- • **Reliable Low-Voltage Compatibility:** Supports up to 100V and 0.5A, perfect for alarms, LEDs, relays, and GPS devices.

## Overview

The AOAUTO Magnetic Reed Switch is a micro-sized, normally open contact sensor designed for door and window security. Rated at 10W and supporting up to 100V and 0.5A, it offers a reliable 16-23mm activation range. Included mounting accessories make installation effortless, making it ideal for integration with alarms, LEDs, relays, and GPS low-voltage devices.

## Description

desertcart.com: Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack) : Industrial & Scientific

Review: Work well with included magnets. NORMALLY OFF, magnet turns them on. - Work well with the included magnets. These are NORMALLY OPEN (off) without the magnet. They turn ON (closed) when the magnet is nearby. Operating distance roughly 1/2" when the switch and magnet are parallel.
Review: Perfect - as advertised and they work perfectly. - Not much to add to already submitted reviews. They all worked as advertised. I installed using the adhesive double sided tape. One year later, they are still exactly where I stuck them on my windows.

## Features

- Contact Type：Normally Open（Please look at the working mode in the second picture to see if it is the switch you need.）
- Rated Power: 10W, Max Voltage: 100V, Max Current:0.5A
- Product Sizes: 23*14*6mm (L * W * H)；Mounting Hole Size：3mm
- Transmitting Distance: 16-23mm
- Accessories: Equipped with 4 pieces of 3M double-sided adhesive tape and 8 screws, convenient for you to install. Suitable for alarm,LED,Relay,GPS low voltage devices...etc. Ideal for door, window security

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09ZTP1S4Q |
| Actuator Type | Magnet |
| Best Sellers Rank | #212,476 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #59 in Reed Switches |
| Brand | AOAUTO |
| Circuit Type | 1-way |
| Color | Black |
| Compatible Devices | Alarm, LED, Relay, GPS low voltage devices |
| Connectivity Protocol | Gps |
| Connector Type | Screws |
| Contact Material | Plastic |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | passive |
| Current Rating | 500 Milliamps |
| Date First Available | May 9, 2022 |
| International Protection Rating | IP54 |
| Item Weight | 0.317 ounces |
| Item dimensions L x W x H | 0.91 inches |
| Item model number | GPS-23L |
| Manufacturer | AOAUTO |
| Mounting Type | Door Mount |
| Number of Items | 2 |
| Number of Positions | 1 |
| Operating Voltage | 5 Volts |
| Operation Mode | ON-NONE-ON |
| Terminal | Screw |
| UPC | 780279473629 |
| Wattage | 10 watts |

## Product Details

- **Brand:** AOAUTO
- **Connector Type:** Screws
- **Contact Type:** Normally Open
- **Current Rating:** 500 Milliamps
- **Item dimensions L x W x H:** 0.91 inches
- **Material:** Copper
- **Operating Voltage:** 5 Volts
- **Operation Mode:** ON-NONE-ON
- **Switch Type:** Reed Switch
- **Terminal:** Screw

## Images

![Magnetic Reed Switch,Wired Door Window Contact Sensor,Micro Normally Open NO Alarm Reed Switch,10W 100v 0.5A Magnetic Reed Switch to DC 5V 12V 24V Light(2-Pack) - Image 1](https://m.media-amazon.com/images/I/71Ru-maeENL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Work well with included magnets. NORMALLY OFF, magnet turns them on.
*by G***R on August 11, 2025*

Work well with the included magnets. These are NORMALLY OPEN (off) without the magnet. They turn ON (closed) when the magnet is nearby. Operating distance roughly 1/2" when the switch and magnet are parallel.

### ⭐⭐⭐⭐⭐ Perfect - as advertised and they work perfectly.
*by S***I on February 15, 2025*

Not much to add to already submitted reviews. They all worked as advertised. I installed using the adhesive double sided tape. One year later, they are still exactly where I stuck them on my windows.

### ⭐⭐⭐⭐⭐ As advertised
*by J***N on November 3, 2025*

As advertised

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.hk/products/451884856-magnetic-reed-switch-wired-door-window-contact-sensor-micro-normally](https://www.desertcart.hk/products/451884856-magnetic-reed-switch-wired-door-window-contact-sensor-micro-normally)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-10*