STI STI-6602-CB Custom Blue Replacement Horn Kit

Overview

The STI-6602-CB is a custom blue replacement horn kit engineered for the STI-13000 Universal Stopper system. This accessory restores or upgrades audible alert capability in door control and access management installations where the integrated sounder has failed or requires color customization to match site-specific aesthetic or operational standards. It operates at 9VDC and integrates into existing STI networked infrastructure without protocol changes.

Compatibility

Designed exclusively for STI-13000 Universal Stopper systems. Verify your Stopper model number before ordering — this kit is specific to the 13000 series and will not retrofit earlier Stopper or Weather Stopper variants. Confirm the horn mounting interface and wiring harness match your installed base before installation.

Installation Notes

Replacement horn kits require power disconnect before removal of the failed unit. Verify 9VDC supply is stable and fused appropriately — a failing power rail can prematurely age replacement horns. Ensure wiring connections are clean and dry; oxidation at terminal points reduces reliability. If the original horn failed prematurely, diagnose the root cause (voltage sag, moisture ingress, or thermal stress from ambient temperature swings) before installing the replacement to avoid repeat failure.