STI STI-1130NR Stopper II with Horn and Clear Spacer

Overview

The STI-1130NR is a Stopper II® push-button assembly combining a mechanical horn actuator with a clear polycarbonate spacer and no label option. This is a standardized access control interface device used in commercial entry-control systems where operators need tactile feedback and audible indication during door release or alarm acknowledgment. The no-label variant leaves the button face unmarked, allowing on-site labeling or integration into custom control panel layouts.

Compatibility

The STI-1130NR integrates with STI Stopper II® series control panel mounting systems and access control strike assemblies that accept standard Stopper II mechanical interfaces. Verify compatibility with your specific door strike, buzzer relay, or alarm control circuit before ordering — dimensional fit and electrical contact configuration must match your panel layout and wiring scheme.

Installation Notes

Mount the assembly into a compatible STI control panel cutout using the provided mechanical fasteners. The clear spacer accommodates mounting on flat or recessed surfaces. Ensure the horn actuator lever moves freely and fully engages the electrical contact when pressed. Wire the internal switch contacts to your door strike solenoid or alarm relay circuit per your access control system's wiring diagram. Test full mechanical travel and electrical continuity before final panel assembly. The no-label design requires manual marking or labeling if visual indication is needed for end users.