George Risk Industries 6644 Magnetic Contact Resistor

Product Description

The George Risk Industries 6644 is a magnetic contact resistor with two leads, designed for use in security and access control wiring systems. This component provides resistive termination within a magnetic contact circuit, allowing supervised alarm loops to detect both open and short-circuit fault conditions. It is typically installed inline with or across the contacts of a magnetic door or window sensor. Electricians and security system technicians install this part as part of zone supervision in residential and commercial alarm systems.

The 6644 is suited for supervised loop applications in residential and commercial security installations. It is used alongside standard magnetic door contacts, window contacts, and similar normally-open or normally-closed sensors where end-of-line or in-line resistance is required by the control panel or monitoring system. Installers will typically use this component when a panel or zone specification calls for supervised wiring with resistive fault detection.

Key Features

• Two-lead resistor format for direct inline or parallel wiring in supervised contact circuits
• Compact form factor suited for installation inside door or window contact housings
• Designed for use in security alarm zone supervision applications
• Sold as individual unit for precise replacement or new installation use

Compatibility

Designed as an OEM-style component for supervised magnetic contact circuits in residential and commercial security alarm systems.

Installation Notes

Installation is typically performed by a licensed electrician or certified security system technician. De-energize the alarm panel zone before connecting or replacing this component. Follow applicable NEC guidelines and the control panel manufacturer wiring requirements for supervised loop resistance values. Avoid cutting lead wires shorter than necessary to maintain a reliable solder or crimp connection.