---
product_id: 156011769
title: "MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair"
brand: "bnyzwot"
price: "€ 24.62"
currency: EUR
in_stock: true
reviews_count: 8
category: "Bnyzwot"
url: https://www.desertcart.pt/products/156011769-mc-38-surface-mount-wired-nc-door-sensor-alarm-magnetic
store_origin: PT
region: Portugal
---

# 0.5A Current 100V Power NC Operation MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair

**Brand:** bnyzwot
**Price:** € 24.62
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in Safety with Style!

## Quick Answers

- **What is this?** MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair by bnyzwot
- **How much does it cost?** € 24.62 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/156011769-mc-38-surface-mount-wired-nc-door-sensor-alarm-magnetic)

## Best For

- bnyzwot enthusiasts

## Why This Product

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

## Key Features

- • **📏 Compact Design:** Measuring just 27 x 14 x 7.8mm, it fits seamlessly into any setup.
- • **🔒 Secure Your Space:** Experience peace of mind with our Normally Closed magnetic door switch.
- • **🔧 Easy Installation:** Includes all necessary parts for a hassle-free setup.
- • **⚡ Reliable Performance:** Handles up to 0.5A current, ensuring consistent operation.
- • **🔌 Versatile Voltage Range:** Compatible with DC 0-100V for diverse applications.

## Overview

The MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch is a reliable and compact security solution. With a Normally Closed operation mode, it ensures that your doors are secure when closed. This package includes 20 switches, each capable of handling up to 0.5A current and operating at voltages up to 100V. Its sleek white design and easy installation make it a perfect fit for any environment.

## Description

1.Self-Adhesive Mount, Screw Surface Mount contact, ABS Housing. Long wire lead that can side mounted. 2.Switch Type: NC means Normally Closed:When the magnet together, the circuit is conductive( light on ); when the magnet separate, the circuit is not conductive ( light off ). 3.Work as an anti-theft alarm, ideal for wood door and window. Nc: when the magnet is near, the circuit is on; When the magnet moves away and the circuit is Off. No: When the magnet is near, the circuit is off, When the magnet moves away and the circuit is ON.

Review: Great for the price - The only problem that I have found is some of the tape was uncovered in shipping and does not work. But I am screwing them in so it does not matter to me
Review: worked great and was much cheaper then Nexx - I purchased this set because it was a great price and I didn't feel like paying $20 for just one magnet sensor for my Nexx wifi garage opener. I got this item in today. I quickly cut the old wire that went to the nexx sensor. Twisted the wires together, added a little solder. Then I finished the job up with some heat shrink wrap. Works like a cramp now! I didn't need all 10 sensors but I figured if the original nexx sensor went out. Then over time this one would probably give out too, so with an extra 9 on hand. I no longer have to worry about it.

## Features

- Product Name: Magnetic Door Switch ;Model: MC-38;Package Content: 20 x Magnetic Door Switch, Some Install Parts;Normally closed: the magnet is close to conducting, and the magnet is open when leaving
- Contact Type: NC (Normally Closed) ;Actuation Distance: 18mm ± 6mm;
- Max. Current: 0.5A ;Max. Power: 10W; Working Voltage: DC0-100V
- Each Size(Approx): 27 x 14 x 7.8mm / 1.06-inch x 0.55-inch x 0.31-inch (L*W*H) ;Mounting Hole Diameter: 4mm/0.16-inch
- Cable Length(Each): 26cm / 10.24-inch Material: ABS (Housing) Wire Type: 1007UL#24AWG Color: White Net Weight: 120g

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07VMYG7GF |
| Actuator Type | Hinge Lever |
| Best Sellers Rank | #284,066 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #68 in Reed Switches |
| Brand | BNYZWOT |
| Brand Name | BNYZWOT |
| Circuit Type | 1-way |
| Color | White |
| Compatible Devices | Alarm Systems |
| Connectivity Protocol | X-10 |
| Connector Type | Screws |
| Contact Material | Plastic |
| Contact Type | Normally Closed |
| Control Method | App |
| Control Type | binary |
| Current Rating | 0.5 Amps |
| Customer Reviews | 4.3 out of 5 stars 140 Reviews |
| International Protection Rating | IP00 |
| Item Weight | 0.01 Ounces |
| Manufacturer | BNYZWOT |
| Material Type | Acrylonitrile Butadiene Styrene |
| Model | A35 |
| Mounting Type | Door,Surface |
| Number of Items | 10 |
| Number of Positions | 2 |
| Operating Voltage | 100 Volts |
| Operation Mode | NC |
| Part Number | A35 |
| Smart Home Compatibility | Not Smart Home Compatible |
| Switch Type | Normally Closed |
| Terminal | Screw |
| UPC | 793513724050 |
| Unit Count | 10.0 Count |
| Wattage | 10 watts |

## Images

![MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair - Image 1](https://m.media-amazon.com/images/I/61UlS3aBmnL.jpg)
![MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair - Image 2](https://m.media-amazon.com/images/I/51DugsJAMDL.jpg)
![MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair - Image 3](https://m.media-amazon.com/images/I/51eTqCGQ0+L.jpg)
![MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair - Image 4](https://m.media-amazon.com/images/I/51deX+TUhkL.jpg)
![MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair - Image 5](https://m.media-amazon.com/images/I/61DnSzrwMSL.jpg)

## Questions & Answers

**Q: Can i run these in series? say i link 5, and these are normally closed, i should be able to tell if there’s at least one of the 5 open right?**
A: Yes, as any normally closed contact you can run them in series and if at least one opens it will open the whole circuit.

**Q: Could I use these to energize some led lighting inside cabinet drawers**
A: If the door magnet is to be energized, the voltage is controlled at dc0v-24v. The key point is: the load current is 100ma max.

**Q: On the non-wired magnet piece, is the magnet plate placed on the face and top, or just the face?**
A: Just the face. These are supper weak and have to be perfectly aligned to work. I would not recommend.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for the price
*by T***M on March 6, 2020*

The only problem that I have found is some of the tape was uncovered in shipping and does not work. But I am screwing them in so it does not matter to me

### ⭐⭐⭐⭐⭐ worked great and was much cheaper then Nexx
*by T***B on October 24, 2019*

I purchased this set because it was a great price and I didn't feel like paying $20 for just one magnet sensor for my Nexx wifi garage opener. I got this item in today. I quickly cut the old wire that went to the nexx sensor. Twisted the wires together, added a little solder. Then I finished the job up with some heat shrink wrap. Works like a cramp now! I didn't need all 10 sensors but I figured if the original nexx sensor went out. Then over time this one would probably give out too, so with an extra 9 on hand. I no longer have to worry about it.

### ⭐⭐⭐⭐ THESE ARE N.O. SWITCHES
*by P***C on November 2, 2025*

THESE ARE N.O. SWITCHES. These are labeled N.C. but are actually N.O. switches which is exactly what I needed. I took a chance because the description describes a N.O. switch. When the magnet is close, the switch will close. When you move the magnet away, the switch will open. Pretty common for a "fail safe" circuit for alarms. Seems like gpod quality and they do work. I would have given them a 5 star rating if the description was correct.

## Frequently Bought Together

- BNYZWOT MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 10 Pair
- VictorsHome Magnetic Reed Switch NC NO COM Surface Mount Wired Door Window Contact Sensor with Adhesive Paper for Home Security and Burglar Alarm Systems MC-38 5pcs

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-08*