GRI 6644 Magnetic Contact Resistor with 2-Black/2-Blue Lead, 2-1K, 1/8W

Designed to simplify supervised contact installations, the George Risk Industries GRI 6644 magnetic contact resistor combines reliable end-of-line supervision with easy field deployment. This contact magnet accessory includes two 1K 1/8W carbon film resistors housed in a compact 50R brown case, and comes with two blue and two black 12-inch leads to eliminate on-site soldering and reduce labor time. The built-in resistors support both open and closed loop configurations, delivering consistent alarm supervision for access control, intrusion detection, and surveillance monitoring.

B2B installers and security integrators will appreciate the GRI 6644’s compatibility with common alarm control panels and its space-saving design that fits most door/window contact assemblies. By providing pre-configured EOL resistance, this accessory minimizes installation errors and helps maintain signal integrity for wired alarm and monitoring systems. Backed by George Risk Industries’ US manufacturing and limited lifetime warranty, it’s a durable choice for commercial and institutional projects. Ideal for door and window contacts, access control points, and retrofit jobs—order the GRI 6644 to speed installations and strengthen system supervision.

• Streamlines installation by eliminating field soldering—pre-wired 12" leads (two blue, two black) save time on site
• Provides supervised end-of-line (EOL) protection for reliable alarm and monitoring of doors/windows
• Dual 1K 1/8W carbon film resistors built-in for consistent circuit supervision and compatibility with most control panels
• Compact 50R brown case fits tight contact housings and preserves sensor aesthetics
• US-made with a limited lifetime warranty for long-term reliability in commercial security systems