George Risk Industries Inc. 8427 4.7k Ohm Resistor Pack

Product Description

The GEORGE RISK INDUSTRIES INC. 8427 is a resistor pack designed for use with recessed contact security and alarm circuits. The pack includes two 4.7k ohm resistors configured for end-of-line or supervisory resistance applications common in low-voltage security installations. Licensed alarm technicians and security system installers rely on this type of resistor pack to maintain proper circuit supervision, ensuring that alarm panels can detect open or short fault conditions on protected zones. Each unit is sold individually and is compatible with standard recessed contact wiring configurations.

This resistor pack is suited for residential and light commercial security installations where recessed door or window contacts require end-of-line resistors to supervise the detection loop. It is typically installed directly at the contact point or within the wiring circuit to provide the panel with the correct resistance value for zone monitoring. Applications include intrusion detection systems, access control perimeter zones, and any supervised contact circuit requiring a 4.7k ohm termination.

Key Features

• Includes 2 x 4.7k ohm resistors per pack for end-of-line supervisory wiring
• Designed for use with recessed contact security and alarm circuits
• Supports proper fault detection by maintaining correct zone resistance values
• Compact form factor for installation at or near the contact location
• Sold as individual pack (quantity 1 per unit of measure)

Compatibility

Designed as an OEM-style resistor pack for use with recessed contact alarm and security circuits requiring 4.7k ohm end-of-line resistor termination.

Installation Notes

Installation should be performed by a licensed alarm or low-voltage technician in accordance with applicable local codes and NFPA 72 guidelines where relevant. De-energize and disarm the security panel before working on any zone wiring. Resistors should be connected in the circuit according to the panel manufacturer's end-of-line wiring diagram. Do not substitute resistors of a different value without confirming compatibility with the alarm control panel specifications.