STI STI-1130-ES Stopper II with Siren and Clear Spacer
Overview
The STI-1130-ES is a Stopper II electromechanical door-holding device paired with an integral siren module and clear polycarbonate spacer, configured for Spanish-language environments. Rated for 28VDC operation, this unit integrates into access control systems where audible alarm and door-restraint functions must coordinate — typical in commercial buildings, industrial facilities, and secured entry points where alarm notification and physical lockdown occur simultaneously.
Compatibility
The STI-1130-ES operates on 28VDC power, matching standard access control panel outputs and distributed door-control modules. Verify your access control power supply delivers regulated 28VDC; the unit is not polarity-sensitive and includes reverse-voltage protection to 50VDC. Compatible with any access control system that provisions 28VDC switched output for solenoid or electromagnet control — common in legacy and modern panel designs from major manufacturers in North America and Latin America.
Installation Notes
The clear spacer accommodates standard door-frame mounting and allows visual inspection of the striker assembly. Mount horizontally on the door-top edge or vertical frame location depending on door swing and frame geometry — consult STI mounting templates for torque and alignment specs. The integrated siren operates on the same 28VDC circuit; ensure your control wiring includes a dedicated relay or solenoid output to energize both holding and alarm functions. Do not exceed 28VDC input under any condition; verify power-supply regulation before installation to prevent component overstress or erratic siren operation.
