STI KIT-6403 Remote Horn Unit for Exit Stopper Series
Overview
The KIT-6403 is a remote horn unit designed to extend audible notification capabilities across exit control and emergency egress systems built on the STI Exit Stopper Series platform. Operating at 9VDC, it provides centralized or distributed alarm feedback for multi-door access control deployments where a single horn sounder must serve multiple strike or lock points. Install this when your exit stopper series infrastructure requires remote audio signaling without rewiring the main strike enclosure.
Compatibility
The KIT-6403 integrates with STI Exit Stopper Series electric locks and strikes. It is compatible with 9VDC powered access control systems using HID credential readers and compatible wiegand or proprietary reader protocols supported by the exit stopper platform. Verify your reader type and voltage source before ordering — this unit is specific to 9VDC installations and the Exit Stopper Series line.
Installation Notes
This unit operates on 9VDC — confirm your power supply and control module deliver stable 9VDC before wiring. The remote horn is mounted away from the strike or lock enclosure, reducing false alarm audibility concerns at the main access point while maintaining clear warning tones throughout the protected area. Wiring runs from the exit stopper control module to the horn unit; use twisted-pair or shielded cable if runs exceed 50 feet to avoid voltage drop and EMI interference. Follow STI's terminal pinout diagram when connecting; reversed polarity will prevent activation.
