---
product_id: 371678443
title: "Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket"
brand: "gagalor"
price: "₨16238"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/371678443-heavy-duty-wired-alarm-magnetic-garage-door-contact-switch-sensor
store_origin: LK
region: Sri Lanka
---

# NC contact for secure OFF switch Adjustable bracket for perfect fit Zinc alloy metal housing for durability Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket

**Brand:** gagalor
**Price:** ₨16238
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock in your home’s safety with heavy-duty precision!

## Quick Answers

- **What is this?** Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket by gagalor
- **How much does it cost?** ₨16238 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/371678443-heavy-duty-wired-alarm-magnetic-garage-door-contact-switch-sensor)

## Best For

- gagalor enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Premium zinc alloy housing resists wear and tear, built for heavy-duty daily use.
- • **Plug & Protect:** Wired with a 380mm armored cable for reliable, tamper-resistant connectivity.
- • **Wide Operation Gap:** ≥50mm gap tolerance means flexible installation without compromising sensitivity.
- • **Rock-Solid Security:** NC contact type ensures your alarm triggers the moment the magnet moves away—no false alarms, just peace of mind.
- • **Custom Fit, Zero Hassle:** Adjustable bracket lets you mount it perfectly on any roller shutter or garage door with ease.

## Overview

The GAGALOR Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor features a robust zinc alloy housing and an adjustable bracket for easy mounting on roller shutter and garage doors. It operates with a normally closed (NC) contact that switches off when the magnet moves away, ensuring reliable alarm activation. Designed for surface mounting with a ≥50mm operation gap, it includes a 380mm armored cable for secure wired connection, supporting up to 28V DC and 0.2A current for heavy-duty home security applications.

## Description

Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket

## Features

- Suitable for roller shutter doors, garage doors. Metal zinc alloy housing
- For home burglar alarm system, important kits of home security.
- With adjustable bracket , easy for mounting.
- Surface mounted on the ground with ≥ 50 mm operation gap
- NC contact type , switch OFF when magnet away

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZBT28L8 |
| Best Sellers Rank | #152,183 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #44 in Garage Door Sensors |
| Customer Reviews | 4.5 4.5 out of 5 stars (186) |
| Date First Available | October 20, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10.2 ounces |
| Item model number | MC-55ZL |
| Manufacturer | GAGALOR |
| Product Dimensions | 4.17 x 1.97 x 0.79 inches |

## Images

![Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket - Image 1](https://m.media-amazon.com/images/I/51p2LAcp0JL.jpg)
![Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket - Image 2](https://m.media-amazon.com/images/I/51ZFpgYDKlL.jpg)
![Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket - Image 3](https://m.media-amazon.com/images/I/51mok3lC8rL.jpg)
![Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket - Image 4](https://m.media-amazon.com/images/I/61BGWi6udYL.jpg)
![Heavy Duty Wired Alarm Magnetic Garage Door Contact Switch Sensor NC with Adjustable Bracket - Image 5](https://m.media-amazon.com/images/I/5196ZY3A5-L.jpg)

## Questions & Answers

**Q: Can this be used on a 24V Hvac system? To shut the system off when the garage door is open?**
A: Voltage would be okay, but you’d be better to use this switch to trigger an SSR as I’m not sure of the current demand of the HVAC system.

**Q: Can this be used directly in a 110v circuit with a LED (9w) lamp?**
A: Dry closure contacts can be used in combination with a switching relay to accommodate high voltage applications.

**Q: How does this work to advise you the garage door is open?**
A: The circuit is closed when the door is closed.  When the door is open, the alarm will trip.

**Q: 12v circuit in series with switch sensor and  a 12v solenoid (60ma) load.  Why is the switch closed permantly when activated by magnetic?**
A: It sounds like you are attempting to use this magnetic switch to control an output device, as per the solenoid. The switch would be designed to be used as an input interrupting device to trigger an open circuit on an alarm system. Even though only 60ma draw, it may be too much for the switch to let go of the contacts under draw. Two things you can try. An alarm system would use a 4.7K ohm resistor at the end of the line of a single circuit across the + and - terminals. This would draw down any lingering power in the circuit and possibly release the contact. If you have done that and it is not fixing the error, you could try running the magnetic switch to a small trigger relay, and have the relay switch the solenoid. If you are still unsuccessful, a mechanical limit switch in place of the magnetic trigger switch would be necessary and should solve your issue.

## Frequently Bought Together

- Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC with Adjustable Bracket
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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-06*