---
product_id: 404703428
title: "QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws"
brand: "qwork"
price: "141 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/404703428-qwork-mc-31-wired-surface-mounted-nc-magnetic-door-window
store_origin: PL
region: Poland
---

# Actuation Distance: 8mm±18mm NC Type: Normally Closed IP65: Weather Resistant QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack of 5 with 20 Screws

**Brand:** qwork
**Price:** 141 zł
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in Safety, Unlock Peace of Mind!

## Quick Answers

- **What is this?** QWORK MC-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?** 141 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/404703428-qwork-mc-31-wired-surface-mounted-nc-magnetic-door-window)

## 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

- • **👥 Pack of 5:** Perfect for multiple entry points, enhancing your security network.
- • **🌧️ Built to Last:** IP65 rated for durability against the elements.
- • **🔒 Secure Your Space:** Ensure peace of mind with reliable door and window security.
- • **🔧 Easy Installation:** Comes with 20 screws for hassle-free setup.
- • **📏 Precision Engineering:** Designed for optimal actuation distance, keeping your home safe.

## Overview

The QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch is a reliable security solution designed for doors, windows, and cabinets. This pack of 5 sensors, complete with 20 screws, features a normally closed contact type, ensuring that your spaces remain secure when the magnet is in proximity. With an actuation distance of 8mm±18mm and an IP65 weather resistance rating, these sensors are built for durability and precision, making them an ideal choice for enhancing your home security.

## Description

QWORK MC-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),pack of 5 with 20 screws.
- 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 |
|---------------|-------|
| Operation Mode | ON-OFF |
| Contact Type | Normally Closed |
| Connector Type | screws |
| Brand | QWORK |
| Terminal | Screw |
| Actuator Type | Magnetic |
| Contact Material | Plastic |
| International Protection Rating | IP65 |
| Number of Positions | 2 |
| Specification Met | CE |
| Lower Temperature Rating | 1 Degrees Celsius |
| Controller Type | Ring |
| Control Method | Touch |
| Connectivity Protocol | X-10 |
| Colour | White |
| Net Quantity | 5.0 count |
| Manufacturer | QWORK |
| Country of Origin | USA |
| Item model number | WD3811 |
| Package Dimensions | 13.89 x 11.51 x 1.6 cm; 0.28 g |
| ASIN | B08FT91C1G |

## Product Details

- **Operation Mode:** ON-OFF
- **Contact Type:** Normally Closed
- **Connector Type:** screws
- **Brand:** QWORK
- **Terminal:** Screw

## Images

![QWORK MC-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)
![QWORK MC-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)
![QWORK MC-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)
![QWORK MC-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)
![QWORK MC-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 Poland*
*Store origin: PL*
*Last updated: 2026-03-19*