MCOH (OCB-424R) Heavy-Duty Metallic Overhead Door Magnetic Contact with Bracket

The MCOH (OCB-424R) is a commercial-grade, heavy-duty metallic magnetic contact switch designed for securing roll-up doors, overhead garage doors, gates, and industrial shutters in wired intrusion alarm setups. Housed in a rugged aluminum enclosure with an L-shaped mounting bracket, it withstands vehicle roll-overs, vibration, and harsh environmental conditions.

Operating on a Normally Closed (NC) loop configuration—where the circuit remains closed when the magnet is positioned next to the switch assembly and opens upon separation—the OCB-424R features an adjustable operating gap (2''/50 mm) and a flexible stainless steel armored cable. This ensures reliable perimeter monitoring for warehouses, distribution centers, commercial garages, and industrial facilities.

Key System Features & Functionality

• Heavy-Duty Aluminum Housing: Cast-aluminum alloy body protects internal reed contacts against heavy vehicle traffic and mechanical impacts.

• Wide Operating Gap (50 mm /2''): Tolerates door misalignment, track movement, and wind vibration without triggering false alarms.

• Stainless Steel Armored Cable Lead: Includes a flexible armored conduit shielding wire leads against physical tampering, abrasion, and cutting.

• Normally Closed (NC) Operation: Opens the security circuit immediately when the overhead or roll-up door is raised.

• Heavy-Duty L-Bracket Mount: Pre-drilled L-bracket allows secure floor or track mounting for roll-up doors and sliding industrial gates.