STI KIT-H07503 Thumb Lock Assembly Kit

Overview

The STI KIT-H07503 is a thumb-actuated lock assembly designed for retrofit and new-build access control installations. Operating at 9VDC, the kit integrates into electronic door strike systems where HID credential readers trigger the unlock mechanism. This is the right choice when you need a manual thumb-operated backup or primary locking interface on a standard door strike, and your system runs on 9V power sourced from a typical access control panel or power supply.

Compatibility

The KIT-H07503 is built for integration with HID-based access control systems and standard 9VDC door strike installations. It works with access control panels and power supplies that deliver unregulated or regulated 9VDC to the strike circuit. Verify your existing strike voltage and wiring configuration before ordering — mismatched voltage will prevent lock operation.

Installation Notes

Installation requires standard door preparation: frame drilling, strike mortise routing, and integration into the existing 9VDC strike control wire. Ensure the access control panel or power supply provides adequate current capacity for the lock solenoid (typical thumb locks draw 300–500mA on 9VDC). Confirm the strike mounting orientation matches your door swing direction and frame type (aluminum or wood). No special tools beyond standard locksmith/integration hand tools are required, but familiarity with door frame geometry and access control wiring is assumed.