---
product_id: 215605131
title: "MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open,"
brand: "takhrwod"
price: "5.96 OMR"
currency: OMR
in_stock: true
category: "Takhrwod"
url: https://www.desertcart.com.om/products/215605131-mc-31b-magnetic-reed-switch-door-sensor-surface-mount-magnetic
store_origin: OM
region: Oman
---

# Fireproof ABS housing for durable, safe use Surface mount with included screws for easy install Dual NC/NO modes for versatile security MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open,

**Brand:** takhrwod
**Price:** 5.96 OMR
**Availability:** ✅ In Stock

## Summary

> 🛡️ Lock in safety with the MC-31B — your door’s smartest silent guardian!

## Quick Answers

- **What is this?** MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, by takhrwod
- **How much does it cost?** 5.96 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/215605131-mc-31b-magnetic-reed-switch-door-sensor-surface-mount-magnetic)

## Best For

- takhrwod enthusiasts

## Why This Product

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

## Key Features

- • **Robust Fireproof ABS Build:** Engineered with heat-resistant, fireproof ABS material to ensure long-lasting reliability in any environment.
- • **Compact & Lightweight Design:** Ultra-lightweight at just 0.27g, it fits discreetly without compromising performance.
- • **Versatile Dual-Mode Detection:** Supports both Normally Open and Normally Closed configurations to perfectly match your security setup.
- • **Effortless Surface Mount Installation:** Comes with screws and a sleek design for quick, no-fuss mounting on doors or windows.
- • **Seamless Integration with Alarm Systems:** Compatible with most wired home security and smart alarm systems for instant peace of mind.

## Overview

The MC-31B Magnetic Reed Switch Door Sensor by TAKHRWOD offers reliable, dual-mode (NC/NO) magnetic detection for home and commercial security systems. Crafted from fireproof ABS, it ensures durability and safety while its surface mount design with included screws guarantees easy installation. Compatible with wired alarm systems, this compact sensor delivers consistent performance to protect doors, windows, and access points with IP65-rated resilience.

## Description

desertcart.com: TAKHRWOD MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, : Industrial & Scientific

## Features

- Reliable Magnetic Reed Switch Performance This MC-31B magnetic reed switch provides stable and accurate detection for doors and windows. The magnetic switch ensures consistent signal transmission for home security and alarm systems.
- NC / NO Flexible Configuration Supports both normally closed (NC) and reed switch normally open (NO) modes. The magnetic door switch allows flexible installation based on your alarm system requirements.
- Durable Fireproof ABS Material Made of high-quality fireproof ABS, this reed switch is designed for long-term use. Strong, heat-resistant, and suitable for both residential and commercial environments.
- Ideal for Security Alarm Systems This magnetic door switch is widely used in burglar alarm systems, smart home setups, and access control systems. Perfect for wooden doors, windows, cabinets, and gates.
- Easy Surface Mount Installation Surface mount design with included screws for quick installation. Package includes 2 sets magnetic reed switch and 8 screws for secure mounting.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B086GYJLML |
| Best Sellers Rank | #46,039 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Reed Switches |
| Brand Name | TAKHRWOD |
| Circuit Type | 2-way |
| Color | black |
| Compatible Devices | Alarm Systems |
| Connectivity Protocol | X-10 |
| Connector Type | Screw Fixation |
| Contact Material | Plastic |
| Contact Type | Normally Open and Normally Closed |
| Control Method | App |
| Current Rating | 500 milliamps |
| Customer Reviews | 4.3 4.3 out of 5 stars (746) |
| International Protection Rating | IP65 |
| Item Weight | 0.27 g |
| Manufacturer | TAKHRWOD |
| Material Type | Plastic |
| Model | 31B |
| Mounting Type | Door Mount |
| Number of Items | 2 |
| Number of Positions | 1 |
| Operating Voltage | 12 volts |
| Operation Mode | ON-OFF |
| Part Number | B3 |
| Switch Type | Spst-no/Nc |
| Terminal | Screw |
| UPC | 779172986510 |
| Unit Count | 2 Count |
| Wattage | 10 watts |

## Product Details

- **Brand:** TAKHRWOD
- **Circuit Type:** 2-way
- **Connector Type:** Screw Fixation
- **Contact Type:** Normally Open and Normally Closed
- **Current Rating:** 500 milliamps
- **Material:** Plastic
- **Operating Voltage:** 12 volts
- **Operation Mode:** ON-OFF
- **Switch Type:** Spst-no/Nc
- **Terminal:** Screw

## Images

![MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, - Image 1](https://m.media-amazon.com/images/I/51-rYaop8UL.jpg)
![MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, - Image 2](https://m.media-amazon.com/images/I/318vbeiJsFL.jpg)
![MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, - Image 3](https://m.media-amazon.com/images/I/51HIiGnw5uL.jpg)
![MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, - Image 4](https://m.media-amazon.com/images/I/51F9QUgWR8L.jpg)
![MC-31B Magnetic Reed Switch Door Sensor, Surface Mount Magnetic Door Switch NC NO Normally Open Closed, Wired Magnetic Switch for Home Security Alarm System, Reed Switch Normally Open, - Image 5](https://m.media-amazon.com/images/I/41DDUsXkdhL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What is the magnetic gap (distance) at which these will close contacts?**
A: The switch I have will work up to 1 inch away.  This is measured with both pieces flat on a table and moving them apart until the reed switch stops seeing the magnet.

**Q: Will these work to turn on/off LED light strips?**
A: They should.All depends how you would set them up.The switch is normally used on doors and windows.

**Q: What wire is recommended for use with this? Looking to wire up a light in my small toolbox.**
A: 18 AWG Wire

**Q: can i use this for 110v?**
A: Not directly. You will need a relay that reduces the power going to the magnet. My experience is that even with 12v power supply, if the power is more that 500ma, this switch will fail. They work great, just not rated to take much current.

## Frequently Bought Together

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-08-24*