---
product_id: 413410785
title: "QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws"
brand: "qwork"
price: "Bs.408"
currency: BOB
in_stock: true
url: https://www.desertcart.bo/products/413410785-qworkmc-31-wired-surface-mounted-nc-magnetic-door-window-contact
store_origin: BO
region: Bolivia
---

# Actuation Distance: 8mm±18mm NC Type: Normally Closed Dimensions: 64*12*12mm QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws

**Brand:** qwork
**Price:** Bs.408
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in Safety, Unlock Peace of Mind!

## Quick Answers

- **What is this?** QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws by qwork
- **How much does it cost?** Bs.408 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/413410785-qworkmc-31-wired-surface-mounted-nc-magnetic-door-window-contact)

## Best For

- qwork enthusiasts

## Why This Product

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

## Key Features

- • **💡 Smart Design:** Sleek white finish blends seamlessly with any decor.
- • **🔒 Secure Your Space:** Protect your home with reliable magnetic door/window sensors.
- • **🔧 Easy Installation:** Includes 20 screws for hassle-free setup—get secured in no time!
- • **📏 Precision Engineering:** Actuation distance of 8mm±18mm for optimal performance.
- • **⚙️ Versatile Applications:** Perfect for doors, windows, and cabinets—your security, your way.

## Overview

The QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch is a reliable security solution designed for various applications, including doors, windows, and cabinets. This pack of 5 sensors comes with 20 screws for easy installation, ensuring your spaces are protected with a sleek and unobtrusive design.

## Description

QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws

## Features

- Product Information: Product name: Surface-mounted Magnetic Door Switch, Type: MC-31, Color: White, Material: Plastic
- Specification: Contact Type: NC, Hole Dia.: 5.8mm, Actuation Distance: 8mm±18mm
- Sizes: 64*12.*12mm and 64*20*12mm（L * W * H）
- NC Type: NC means normally closed. If the magnet is closed to this switch, the signal is conductive, otherwise, if the magnet is far away from this switch, the signal is disconnected.
- Applications: It is suitable for magnetic windows, doors, cabinets etc. Ideal for door, window security.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | QWORK |
| Part number | WD3811 |
| Item Weight | 0.28 g |
| Package Dimensions | 13.89 x 11.51 x 1.6 cm; 0.28 g |
| Item model number | WD3811 |
| Material | Plastic |
| Switch Type | 1-way |
| Plug Profile | Surface Mount |
| Switch Style | Magnetic Reed Switch |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Operation mode:** ON-OFF
- **Contact type:** Normally Closed
- **Connector type:** Screws
- **Brand:** QWORK
- **Switch type:** Magnetic Reed Switch

## Images

![QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws - Image 1](https://m.media-amazon.com/images/I/61qIPlQMfwL.jpg)
![QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws - Image 2](https://m.media-amazon.com/images/I/616i2l0lUGL.jpg)
![QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws - Image 3](https://m.media-amazon.com/images/I/614vFt4m25L.jpg)
![QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws - Image 4](https://m.media-amazon.com/images/I/61GftIIm3bL.jpg)
![QWORKMC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws - Image 5](https://m.media-amazon.com/images/I/61pJVoxSalL.jpg)

## Questions & Answers

**Q: how long is the leader wires?**
A: The leads are about 6 inches long.

**Q: Type of reed switch? Voltage/Current specs needed**
A: The reed switch type is NC. No voltage/current required.

**Q: Does this have an end of line (eol) resistor internally?**
A: It is a simple reed switch with no resistor.

**Q: Do these work with ADT**
A: They shot

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-03-12*