---
product_id: 474175564
title: "5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm"
brand: "wesua"
price: "€ 25.37"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.es/products/474175564-5-pack-surface-mounted-nc-magnetic-door-contacts-switch-sensor
store_origin: ES
region: Spain
---

# Corded power 21x15x2 cm NC switch 5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm

**Brand:** wesua
**Price:** € 25.37
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in Safety, Unlock Peace of Mind!

## Quick Answers

- **What is this?** 5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm by wesua
- **How much does it cost?** € 25.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/474175564-5-pack-surface-mounted-nc-magnetic-door-contacts-switch-sensor)

## Best For

- wesua enthusiasts

## Why This Product

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

## Key Features

- • **🚨 Instant Alerts:** Get notified immediately when the magnet is disturbed—stay one step ahead.
- • **🔒 Secure Your Space:** Experience peace of mind with reliable NC magnetic contacts.
- • **🔧 Durable & Dependable:** Crafted from high-quality ABS plastic for long-lasting performance.
- • **📏 Sleek & Compact Design:** Perfectly fits any window or wooden door without compromising aesthetics.
- • **⚡ Hassle-Free Installation:** Surface-mounted for quick and easy setup—no batteries required!

## Overview

The WESUA 5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor is a compact and stylish security solution designed for windows and wooden doors. Made from durable ABS plastic, these normally closed sensors provide instant alerts when the magnet is disturbed, ensuring your home remains secure. With easy surface-mounted installation and no need for batteries, this system is perfect for any burglar alarm setup.

## Description

WESUA5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm

## Features

- Small size, nice looking, ideal for window or wooden door
- Screws installation make it more firm
- ABS normally closed door contact switch, alarm when the magnet part away
- Application: door / window entry burglar alarm system
- NC magnetic contact switch sensor

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | WESUA |
| Part number | MCS-31 |
| Item Weight | 118 g |
| Product Dimensions | 21 x 15 x 2 cm; 118 g |
| Item model number | MCS-31 |
| Color | white |
| Material | ABS plastic |
| Power source type | Corded Electric |
| Installation Method | Surface-Mounted |
| Included components | Switch |
| Batteries Required? | No |

## Product Details

- **Brand:** WESUA
- **Color:** white
- **Compatible Devices:** Alarm System
- **Item dimensions L x W x H:** 8.27 x 5.91 x 0.79 inches
- **Power Source:** Battery Powered

## Images

![5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm - Image 1](https://m.media-amazon.com/images/I/41KgdnUC3JL.jpg)

## Questions & Answers

**Q: Are these assemblies really 8 x 5 inches?**
A: The magnets are about 2 1/2 inches long and 5/8 inches wide.  I think the dimensions you referred to are the size of the packing box.

**Q: Are these compatible with any brand window sensor? Eufy to be specific?**
A: I don't know about eufy,  but i would think so as these are simple magnet triggered sensors.  Low volt wires screw into base sensor and top sensor is simply a magnet.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Alarm magnets
  

*by G***Y on Reviewed in the United States on 29 November 2023*

Alarm magnets They work just perfect on my basement windows. Easy to install.

### ⭐⭐⭐⭐⭐ 







  
  
    Just what I needed!
  

*by B***H on Reviewed in the United States on 4 October 2022*

My Garage Butler garage door closer failed due to a bad magnetic door switch.  I stumbled across these Magnetic Switches on Amazon and bought them.  This was exactly what I needed and for the cost of the switches I was able to fix the Garage Butler and put it back into service.

### ⭐⭐⭐⭐ 







  
  
    These are huge sensors
  

*by S***R on Reviewed in the United States on 26 April 2023*

When purchasing these sensors, I failed to appreciate the size shown in one of the photographs.  These are easily three times larger than the window sensors they were meant to replace.Having a cover for the terminals is a nice feature, but I found them very difficult to remove.If you need something inconspicuous, this isn't what you are looking for.  However, if this isn't a problem for your use case and you want a nice large magnet that will prevent false alarms, this is a good choice.

## Frequently Bought Together

- WESUA 5 Pack Surface Mounted NC Magnetic Door Contacts Switch Sensor for Alarm
- Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC with Adjustable Bracket
- 10 Sets Pack of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed Switch Sensor with Double Side Tape

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**Shop now:** [https://www.desertcart.es/products/474175564-5-pack-surface-mounted-nc-magnetic-door-contacts-switch-sensor](https://www.desertcart.es/products/474175564-5-pack-surface-mounted-nc-magnetic-door-contacts-switch-sensor)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-20*