George Risk Industries 220-36 Overhead Door Contact

Product Description

The George Risk Industries 220-36 is an overhead door contact assembly with an integrated magnet, designed to detect the open or closed position of overhead and large sectional doors in security and access control systems. The unit pairs a surface-mount contact switch with a corresponding magnet to create a reliable magnetic reed circuit. When the door closes, the magnet aligns with the contact and holds the circuit in its normal state; opening the door breaks that alignment and triggers the connected alarm or control panel. This type of device is a standard component in commercial and industrial intrusion detection systems and is installed by licensed security technicians or electricians.

The 220-36 is suited for overhead doors found in commercial warehouses, loading docks, garages, and light industrial facilities. Its design accommodates the wider gap tolerances common with large rolling or sectional doors, where standard door contacts would not provide reliable actuation. It integrates into hardwired security panels and access control systems as a zone input device.

Key Features

• Integrated magnet included for complete contact-and-magnet assembly out of the box
• Engineered for overhead and large sectional door applications with wider actuation gap tolerance
• Magnetic reed switch operation provides solid-state reliability with no moving mechanical parts
• Compatible with standard hardwired security and access control panel zone inputs
• Single-unit quantity packaging for straightforward replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-installation contact for hardwired overhead door security zones in commercial and industrial intrusion detection systems.

Installation Notes

Installation is typically performed by a licensed security technician or low-voltage electrician. De-energize the security panel zone and follow the panel manufacturer lockout procedure before wiring the contact leads. Mount the contact body to the fixed door frame and the magnet to the moving door surface, aligning the two components within the manufacturer-specified gap tolerance. Local codes and NEC low-voltage wiring requirements apply to all field wiring.