Honeywell Silent Knight SK-4XZM Zone Relay Module

Product Description

The HONEYWELL SILENT KNIGHT SK-4XZM is a zone relay module designed for use in fire alarm and life safety control systems. It provides a supervised relay output that can be used to trigger ancillary devices or control auxiliary equipment in response to alarm or supervisory conditions. Licensed fire alarm technicians and system integrators are the primary installers of this module. The SK-4XZM is sold as a single unit and is classified as a fire control accessory.

The SK-4XZM is suited for commercial and institutional fire alarm applications where zone-level relay control is required. Typical installations include panel-connected configurations where the module extends system output capability to devices such as door holders, HVAC shutdown relays, elevator recall circuits, or other controlled loads that must respond to fire alarm events.

Key Features

• Supervised zone relay output for fire alarm system integration
• Supports ancillary device control including HVAC shutdown and door holder release
• Single-unit packaging for straightforward field installation
• Classified as a fire control accessory for panel expansion applications

Compatibility

Designed as an OEM-style relay module for use with compatible Silent Knight fire alarm control panels and systems. Consult system documentation to confirm panel compatibility before installation.

Installation Notes

Installation must be performed by a licensed fire alarm technician in accordance with NFPA 72 and all applicable local codes. De-energize and lockout the fire alarm control panel before making any wiring connections to this module. Follow the panel manufacturer's wiring diagrams and module addressing procedures as specified in the system documentation. Do not restore power until all connections have been verified and inspected.