Seco-Larm SM-4105-LQ/W 3/4" Steel Door Recessed-Mount Magnetic Contact Switch, White
SKU
SM-4105-LQ/W
Model No
SM-4105-LQ/W
$4.58
Seco-Larm SM-4105-LQ/W 3/4" Steel Door Recessed-Mount Magnetic Contact Switch, White is available to buy in increments of 10
Product Highlights
- Used for steel framed doors and windows where space is limited or to avoid unsightly installations
- Strong one-piece construction
- 18" (46cm) wire leads
- High-impact ABS plastic
- Switch and magnet have ribs for securing in holes

Speak to an expert
The SM-4105-LQ/W from Seco-Larm is a ¾ steel door recessed N.C magnetic contact with quick-connect terminals. 1" Gap. 18" leads. UL, CUL Listed. White. Sold in Multiples of 10. (price is for 1 pc.).
Seco-Larm SM-4105-LQ/W Magnetic Contact Switch Features
- Designed for Steel Doors: Ideal for steel framed doors and windows where space constraints exist, providing a clean and unobtrusive installation.
- Durable Construction: Made from strong one-piece material ensuring longevity and reliability even in demanding environments.
- Extended Wire Leads: Features 18" (46cm) wire leads allowing for easier installation and flexibility in positioning.
- High-Impact Material: Constructed from high-impact ABS plastic to withstand wear and tear over time.
- Secure Installation: Both the switch and magnet have ribs for secure locking in the mounting holes, ensuring a stable and permanent installation.
- Advanced Contact Technology: Equipped with an SPST contact reed switch, iridium-plated to handle higher power with a longer expected lifespan due to its high melting point and hardness.
- Optimized for Closed Loops: Specifically designed for use in closed loop circuits, making it a reliable choice for security systems.
- Generous Gap: Maintains a 1" (25mm) gap, accommodating a variety of installation scenarios.
Seco-Larm SM-4105-LQ/W Detailed Specifications
| Model | SM-4105-LQ/W |
| Type | Recessed-Mount Magnetic Contact Switch |
| Material | Steel and High-Impact ABS Plastic |
| Application | Steel Doors and Windows |
| Wiring | 18" Wire Leads |
| Contact Type | SPST Reed Switch |
| Power Handling | Iridium-Plated for High Melting Point |
| Gap | 1" (25mm) |
| Certifications | UL, CUL Listed |
| Packaging | Sold in Multiples of 10 (price is for 1 pc.) |
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