Seco Larm SM-407-5TQ/W Magnetic Contact – White, Gold Terminals

Description

Product Overview

The Seco-Larm SM-407-5TQ/W magnetic contact combines a sleek recessed‑mount form factor with robust construction to meet the exacting demands of industrial and commercial applications. Crafted from high‑impact ABS plastic, the housing resists cracking, chipping, and chemical exposure, ensuring a long service life even in harsh environments. Gold‑plated screw terminals provide superior conductivity and corrosion resistance, while the 0.37‑inch press‑fit design allows for seamless integration into narrow frame openings without compromising performance. The device features a 0.75‑inch magnetic gap that reliably detects the presence or absence of a magnet, triggering a switch action that can be used to monitor doors, windows, and other movable panels. With its compact dimensions of 1.12 × 0.43 × 0.37 inches and a weight of just 4.8 ounces, this contact is ideal for space‑constrained installations where precision and reliability are paramount.

Usage

Designed for a wide range of applications, the SM-407-5TQ/W excels in scenarios where space is at a premium and dependable operation is essential. It is commonly employed to protect sliding doors and windows in commercial buildings, retail storefronts, and industrial facilities, providing real‑time status monitoring that integrates with building automation and security systems. The recessed‑mount design enables the contact to be installed directly into door frames or window jambs, eliminating the need for bulky external housings and preserving aesthetic continuity. Its reliable magnetic sensing capability makes it suitable for use in HVAC duct monitoring, equipment access panels, and safety interlock systems where a quick response to opening events is critical. The product’s gold‑plated terminals simplify wiring connections, allowing electricians to secure screw‑terminal terminations quickly and with confidence, reducing installation time and minimizing the risk of loose connections.

Why Choose Us

When selecting a magnetic contact for demanding applications, Seco‑Larm stands out for its commitment to quality, precision engineering, and customer support. Each unit undergoes rigorous testing to verify magnetic gap accuracy, contact bounce resistance, and environmental durability, ensuring that the product performs consistently across temperature extremes and exposure to moisture or dust. The use of gold‑plated terminals not only enhances electrical performance but also reflects our dedication to long‑term reliability, reducing the need for frequent maintenance or replacement. Our manufacturing processes adhere to ISO‑9001 standards, and every batch is traceable, providing confidence in product consistency and compliance. In addition, Seco‑Larm offers responsive technical assistance and a comprehensive warranty, giving customers peace of mind that any issues will be addressed promptly and professionally.

Key Features

• Compact recessed‑mount design fits into tight frame spaces without sacrificing performance.
• High‑impact ABS housing resists cracks, chemicals, and temperature fluctuations for lasting durability.
• Gold‑plated screw terminals ensure superior conductivity and corrosion resistance, simplifying installation.
• Precise 0.75‑inch magnetic gap provides reliable detection for doors, windows, and panels.
• Dedicated customer support and warranty give confidence in long‑term operation and service.

FAQ

What size magnet should be used with this contact?

A standard neodymium magnet with a surface area of approximately 0.5 × 0.5 inches and a pull force of 5–10 lbs works well, but any magnet that fits within the 0.75‑inch gap and provides sufficient magnetic field strength will operate correctly.

Can this contact be used in outdoor environments?

Yes. The ABS housing is rated for outdoor use and can withstand exposure to rain, dust, and temperature ranges from –20 °C to +85 °C, making it suitable for exterior door and window applications.

How do I wire the screw terminals?

Strip the wire ends to about 0.2 inches, insert them into the appropriate terminal slots, and tighten the screws securely. The gold‑plated contacts ensure a low‑resistance connection, and the terminals are clearly labeled for easy identification.

Is the contact compatible with existing alarm systems?

Absolutely. The SM-407-5TQ/W provides a standard dry‑contact closure that can be integrated with most alarm panels, building management systems, and PLCs without the need for additional interface modules.

What is the expected lifespan of the magnetic contact?

When installed according to the manufacturer’s guidelines and operated within the specified environmental limits, the contact is expected to function reliably for 10 years or more, thanks to its robust materials and protective design.