---
product_id: 117355036
title: "Seco-Larm SM-4201-LQ Enforcer Track-Mount Overhead Door Magnetic Contact Switch"
brand: "seco-larm"
price: "17353 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/117355036-seco-larm-sm-4201-lq-enforcer-track-mount-overhead-door
store_origin: HU
region: Hungary
---

# Fits door channels up to 3 inches Reliable closed loop circuit compatibility Durable aluminum housing with armored cable Seco-Larm SM-4201-LQ Enforcer Track-Mount Overhead Door Magnetic Contact Switch

**Brand:** seco-larm
**Price:** 17353 Ft
**Availability:** ✅ In Stock

## Summary

> 🔐 Secure your space with precision and style — don’t get left behind!

## Quick Answers

- **What is this?** Seco-Larm SM-4201-LQ Enforcer Track-Mount Overhead Door Magnetic Contact Switch by seco-larm
- **How much does it cost?** 17353 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/117355036-seco-larm-sm-4201-lq-enforcer-track-mount-overhead-door)

## Best For

- seco-larm enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Rugged aluminum housing paired with 36-inch armored cable guarantees long-term durability and protection.
- • **Plug & Play Security:** Fast, easy installation means you’re securing your space without the wait or fuss.
- • **Precision Monitoring:** Accurately detects open/closed status of overhead doors with a wide gap tolerance for versatile use.
- • **Universal Fit, Zero Hassle:** Adjustable design fits most overhead door channels up to 3 inches wide, ensuring seamless integration.
- • **Seamless System Integration:** Designed for closed loop circuits, making it perfect for professional-grade security setups.

## Overview

The Seco-Larm sensor offers a robust, adjustable solution for monitoring overhead door status. Its durable aluminum housing and armored cable ensure longevity, while compatibility with closed loop circuits and easy installation make it ideal for professional security systems.

## Description

Seco-Larm SM-4201-LQ Enforcer Track-Mount Overhead Door Magnetic Contact Switch

## Features

- Designed to monitor open/closed status of an overhead door with a wide gap
- Adjustable design to fit most door-channel widths (up to 3 inches)
- Durable aluminum housing with 36-inch wire leads enclosed in armored cable
- For closed loop circuits
- Fast, easy installation

## Product Details

- **Operation Mode:** automatic
- **Current Rating:** 1 Amps
- **Operating Voltage:** 10 Volts (DC)
- **Contact Type:** Normally Open
- **Connector Type:** Wire Leads
- **Brand:** Seco-Larm
- **Terminal:** Through Hole
- **Material:** Aluminum, ferrite
- **Mounting Type:** Track-Mount
- **Contact Material:** Iridium

## Images

![Seco-Larm SM-4201-LQ Enforcer Track-Mount Overhead Door Magnetic Contact Switch - Image 1](https://m.media-amazon.com/images/I/519jYYOGDXL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is there a way to get a longer cable for the wires?**
A: The wires can be extended with standard alarm wire.

**Q: can I use this for a 120 volt circuit, or is this low voltage only?**
A: Low voltage, 24 ga. Wires. If you use a transformer like a doorbell transformer, it probably will work as it will be 17 vAC for that. I used it for a shut off of my garage heater so it shuts the heat off if the door opens until it lowers again.

**Q: How can I wire this to turn on a light when the garage door is open (magnet away from switch)? Use a bus bar & relay?**
A: This is just a 2 wire sensor... so yeah, you'd definitely need a relay for the light. Then a way to trigger the relay when certain conditions are met. You could easily do that using a MIMO (multi input multi output) device and some kind of automation software. I'm using this with a Z-wave MIMO - the Zooz 700 is a solid one too if you're into that. But if you're looking to do this kind of stuff, i would recommend just using automation software like Home Assistant or something like that.

**Q: What is the lowest DC voltage that this switch will operate at?**
A: We asked the manufacturer and they replied: "That is a passive magnetic contact.  So when the magnet comes near the switch it flips state. So it can do real low voltage."

## Frequently Bought Together

- Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, for Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included
- Zooz Z-Wave Long Range Relay ZEN17 800LR for Awnings, Garage Doors, Sprinklers, and More | 2 x NO-C-NC Relays (20A, 10A) | Hub Required (Compatible with Z-Box, Home Assistant, and Hubitat)
- WESUA Magnetic Switch Alarm Sensor Overhead Garage Door Contacts with L Bracket

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**Shop now:** [https://www.desertcart.hu/products/117355036-seco-larm-sm-4201-lq-enforcer-track-mount-overhead-door](https://www.desertcart.hu/products/117355036-seco-larm-sm-4201-lq-enforcer-track-mount-overhead-door)

---

*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-05*