Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch
SKU
SM-4201-LQ
Model No
SM-4201-LQ
$19.50
Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch is available to buy in increments of 10
Product Highlights
- Used for overhead doors in both industrial and residential situations where a wide gap is present
- Adjustable to fit most door-channel widths
- Rugged aluminum housing
- 36" (91cm) wire leads enclosed in armored cable
- For closed loop circuits

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The SM-4201-LQ from Seco-Larm is a track-mount N.C overhead magnetic door contact known for its durable construction and versatile application. This switch features an adjustable design for various door-channel widths, making it ideal for both industrial and residential environments. With rugged aluminum housing and a 3" gap, it provides reliable operation and long-lasting performance.
Seco-Larm SM-4201-LQ Key Features
- Wide Application: Used for overhead doors in both industrial and residential situations where a wide gap is present, enhancing versatility.
- Adjustable Fit: Adjustable to fit most door-channel widths, allowing for easy installation across different door types.
- Durable Construction: Rugged aluminum housing ensures longevity and resistance to environmental wear.
- Armored Cable: 36? (91cm) wire leads enclosed in armored cable provide added protection against damage and wear.
- High-Performance Contact: Contact Type: SPST, iridium-plated for high melting point and Vickers hardness, ensuring durability and reliability in high-power applications.
- Closed Loop Circuit: Designed for use in closed loop circuits, making it suitable for various security setups.
- Wide Gap Coverage: 3? (76mm) gap allows for flexibility in installation without compromising safety.
- Easy Installation: Mounting bracket included, simplifying the installation process for users.
Seco-Larm SM-4201-LQ Detailed Specifications
| Feature | Details |
| Model | SM-4201-LQ |
| Type | Track-Mount N.C Magnetic Door Contact |
| Housing Material | Rugged Aluminum |
| Wire Leads Length | 36? (91cm) |
| Cable Type | Armored |
| Contact Type | SPST, Iridium-Plated |
| Gap Size | 3? (76mm) |
| Suitable For | Industrial & Residential Applications |
| Included Accessories | Mounting Bracket |
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