---
product_id: 51638108
title: "Knight Plastics Heavy Duty Roller Shutter/Garage Door Alarm Contact."
brand: "knight fire and security"
price: "€ 37.25"
currency: EUR
in_stock: true
reviews_count: 8
category: "Knight Fire And Security"
url: https://www.desertcart.ie/products/51638108-knight-plastics-heavy-duty-roller-shutter-garage-door-alarm-contact
store_origin: IE
region: Ireland
---

# Knight Plastics Heavy Duty Roller Shutter/Garage Door Alarm Contact.

**Brand:** knight fire and security
**Price:** € 37.25
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Knight Plastics Heavy Duty Roller Shutter/Garage Door Alarm Contact. by knight fire and security
- **How much does it cost?** € 37.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/51638108-knight-plastics-heavy-duty-roller-shutter-garage-door-alarm-contact)

## Best For

- knight fire and security enthusiasts

## Why This Product

- Trusted knight fire and security brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

These heavy duty contacts are designed to be fitted to garage doors or roller shutter doors. They are manufactured to be of a robust heavy construction for use in a garage type environment. The contact has an integral flexible armoured cable sleeve which protects the cable connected to the contact. The cable should be connected to your alarm system through a 6 way junction box (sold separately, view our other items). Grade 2 contacts with an operating gap of 50mm, Material: Aluminium, Cable protection: Approx 18 inch / 450mm armoured sleeve, Pre wired sealed construction, IP rating: IP67, Dimensions: 150mm x 40mm x 15mm. These are normally closed contacts (when door is closed circuit is closed) and therefore work with all the leading brands of burglar alarm panels: ADE, Accenta, Optima, Gardtec, Risco etc.

Review: It's of solid construction. - I like the fact it's of solid construction. I would have liked the part that fits on the roller door, to have been smaller. Not so wide. I may have to cut it down.
Review: Sensor - Good product 👍

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B006WOACLU |
| Best Sellers Rank | 73,498 in DIY & Tools ( See Top 100 in DIY & Tools ) 68 in Home Security Door & Window Sensors |
| Brand | Knight Fire and Security |
| Brand Name | Knight Fire and Security |
| Compatible Devices | For wired burglar alarm |
| Compatible devices | For wired burglar alarm |
| Country of Origin | United Kingdom |
| Customer Reviews | 3.8 out of 5 stars 42 Reviews |
| Includes Remote | No |
| Remote control included? | No |

## Product Details

- **Brand:** Knight Fire and Security
- **Remote control included?:** No
- **Manufacturer:** Knight Plastics

## Images

![Knight Plastics Heavy Duty Roller Shutter/Garage Door Alarm Contact. - Image 1](https://m.media-amazon.com/images/I/31u4mIjO82L.jpg)

## Questions & Answers

**Q: Will this door contact work with scantronic 9448 alarm panel?**
A: I’m sure my system is a scantronic 9448 and this works very well. Also has the tamper wires built in

**Q: How does the magnet fit to the roller shutter? Does it screw into one of the horizontal slats?**
A: Two ways to fit depending on the type of door  
1-coach bolt through the door with the magnet upright leaving a small gap between contact and magnet 
2 bolt flat to the lip some shutters have at the bottom but remember to move the contact to suit 
If this is a grade 3 contact tolerances matter to the MM in alignment

**Q: Will this work from a 12 volt transformer and power a twelve volt buzzer**
A: It will - But if the buzzer circuit draws more than a few milliamps the reed contact in the unit may deteriorate over time because of electrical arcing. A small capacitor across the contact may help prevent this arcing.

**Q: Hi I need a normaly open contact switch will this one do the job thanks Peter**
A: These are normally closed contacts meaning that when the door is closed the circuit is closed, when the door opens the circuit opens. Hope that clarifies the operation of them.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It's of solid construction.
*by H***N on 26 August 2020*

I like the fact it's of solid construction. I would have liked the part that fits on the roller door, to have been smaller. Not so wide. I may have to cut it down.

### ⭐⭐⭐⭐ Sensor
*by A***E on 1 May 2023*

Good product 👍

### ⭐⭐⭐⭐ Wiring is compatible with most alarms
*by B***L on 30 May 2019*

Work fine with my roller shutter door and easy to fit very happy

## Frequently Bought Together

- Knight Plastics Heavy Duty Roller Shutter/Garage Door Alarm Contact.
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**Shop now:** [https://www.desertcart.ie/products/51638108-knight-plastics-heavy-duty-roller-shutter-garage-door-alarm-contact](https://www.desertcart.ie/products/51638108-knight-plastics-heavy-duty-roller-shutter-garage-door-alarm-contact)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-27*