George Risk Industries Inc. 200-48HD Overhead Door Contact

Product Description

The GEORGE RISK INDUSTRIES INC. 200-48HD is an overhead door contact designed for use in security and access control applications. This 4-lead contact assembly mounts to overhead door systems and provides a reliable switching signal to an alarm panel or control system when the door changes position. The 4-lead configuration supports supervision or dual-zone wiring, making it suitable for installations that require monitored circuit integrity. Security installers and low-voltage alarm technicians are the primary trades that work with this device.

This contact is intended for overhead door applications in commercial and light industrial environments, though it is also used in residential settings where overhead garage or warehouse doors require position monitoring. The unit is sold individually and is appropriate for new installations as well as replacement of existing overhead door contacts in security systems. Installers working on loading dock doors, commercial garage doors, or similar large-format overhead doors will find this contact suited to that application.

Key Features

• 4-lead wiring configuration supports supervised or dual-zone circuit installations
• Designed specifically for overhead door mounting applications
• Sold as a single unit for straightforward replacement or new installation
• Compatible with standard low-voltage alarm and access control panel wiring

Compatibility

Designed as an OEM-style replacement or new-installation overhead door contact for use with low-voltage security alarm and access control systems requiring a 4-lead door position sensor.

Installation Notes

Installation is typically performed by a licensed low-voltage or alarm systems technician. Before servicing or replacing the contact, de-energize the associated alarm panel zone and confirm the overhead door is secured in a fixed position before mounting. Follow local low-voltage wiring codes and the alarm panel manufacturer's wiring guidelines when terminating the 4-lead connections. Avoid routing signal wiring in the same conduit as high-voltage power conductors.