Authorized Seco-Larm Reseller

Seco-Larm SM-4201-L3Q Track-Mount Overhead Door Magnetic Contact, 3″ (76mm) Gap, Open/Closed loop (3 Wires)

Seco-LarmSKU: SM-4201-L3Q

Sale price$29.25
Usually ships within 3-5 business days
Buying in Bulk? Have Questions?
Call Us: 718-435-2800


  • 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
  • Contact Type: SPDT, iridium-plated to have a high melting point and Vickers hardness for higher power handling and longer expected life
  • For open/closed loop circuits
  • 3″ (76mm) Gap
  • IP65 Weatherproof
  • Mounting bracket included
  • Optional L-bracket (SM-8201-LWQ) available for door channels 2-1/2~4″ (62x102mm), dimensions: 3″x2″x1-1/4″ (76x51x32 mm)
  • Lifetime limited warranty



Loop Type Open/Closed Loop
Operation Gap 3″ (76mm)
Material – Case Aluminum
Material – Terminals 36″ (91cm) armored leads
Contacts Iridium-plated
Contact Rating 1.0A@10VDC (max), 10W (max)
Operating Temperature -15°~160°F (-25°~70°C)
Switch Cycles 50 Million (0.1mA@5VDC)
Switch Dimensions 3-1/8″x2-5/8″x1-13/16″ (79x66x46 mm)
Magnet Dimensions 3-1/4″x3-9/16″x1-3/4″ (82x90x44 mm)
Magnet Type Ferrite
IP Rating Weatherproof IP65

Why buy Certified?

Certified Alarm Distributors - Top USA Reseller Certified Alarm Distributors - Your team of experts Certified Alarm Distributors - Easy 30 day returns
Top USA Reseller
Trusted since 1976
Your Team of Experts
Pro Help when you need it
Easy 30 Day Returns
Satisfied or refunded

Secure Checkout With

American Express Apple Pay Diners Club Discover Meta Pay Google Pay Mastercard Shop Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

You may also like

Recently viewed