George Risk Industries GR1840 Oval Door Channel Magnet

Product Description

The George Risk Industries GR1840 is an oval door channel magnet designed for use in overhead door contact applications. This component serves as the magnetic actuator half of a door contact assembly, triggering the switch when the door closes and the magnet aligns with the sensor. It is sold individually and is installed by security technicians, alarm system integrators, and electricians working on access control or intrusion detection systems. The oval channel profile allows for recessed or surface mounting in door frames where standard rectangular profiles are not suitable.

The GR1840 is used in residential and commercial overhead door installations where door position monitoring is required. Typical applications include garage doors, roll-up doors, and sectional overhead doors connected to alarm panels, access control systems, or building automation systems. The oval channel form factor suits installations where the door material or frame geometry requires a non-standard magnet profile.

Key Features

• Oval channel form factor for compatibility with non-standard door frame profiles
• Designed for overhead door contact applications requiring magnetic actuation
• Sold individually, one magnet per unit
• Compact design suitable for recessed or surface-mount installation scenarios

Compatibility

Designed as an OEM-style replacement or new-installation magnet for overhead door contact assemblies requiring an oval channel magnet actuator.

Installation Notes

Installation is typically performed by licensed security or low-voltage technicians in accordance with local codes and NEC guidelines for low-voltage wiring. Disable power to the alarm or access control panel before servicing any door contact components. Mount the magnet on the door leaf so it aligns precisely with the corresponding switch when the door is in the fully closed position. Do not substitute the magnet with non-matched components, as misalignment or incorrect field strength can result in false alarms or failure to trigger.