OCB-57R

OCB-57R: Heavy-Duty Wired Metal Roller Door Magnetic Contact

In residential, commercial, and industrial intrusion alarm systems, securing overhead garage doors, rolling shutters, and heavy warehouse gates requires rugged magnetic contacts capable of withstanding physical stress and wide alignment tolerances. The OCB-57R is a professional surface-mount wired roller door contact engineered specifically for overhead rolling door applications.

Rugged Metal Housing & Wide Operating Gap

Constructed with a heavy-duty silver aluminum alloy housing and flexible armored stainless steel cable protection, the OCB-57R protects internal wiring against mechanical abrasion, vehicle impact, and outdoor environmental wear. The sensor features an extended operating gap (operating distance of 50 mm to 70 mm), allowing reliable operation even on large overhead doors subject to wind movement, sagging, or alignment shifting.

Normally Closed (NC) Contact Logic & Universal Compatibility

The detector utilizes a high-reliability reed switch mechanism configured as a Normally Closed (NC) loop output when the magnet is in close proximity to the switch. When the roller door opens, the magnet separates from the sensor switch, breaking the circuit and triggering an immediate intrusion alarm on the connected control panel. It connects seamlessly to conventional intruder alarm systems, access control units, and perimeter automation modules.