STI KIT-19038 Tamper Detection Bit for Electronic Strikes
Overview
The STI KIT-19038 is a mechanical tamper-detection accessory designed to retrofit compatible electronic strike assemblies. This bit adds intrusion-detection capability to door control systems, triggering contact closure when unauthorized physical manipulation of the strike is detected. Operating at 9VDC, the KIT-19038 integrates directly with access control panels and HID-compatible credential readers to log and alert on tamper events in real time. If your facility requires comprehensive door security audit trails — tracking not just who accessed a door, but whether anyone attempted to force or bypass the strike — this accessory closes that visibility gap.
Key Features
- Tamper Detection via Mechanical Arm: Physical intrusion attempts (forced entry attempts, strike manipulation) trigger a normally open or normally closed contact that reports back to your access control system. This gives you evidence-grade logging of bypass attempts, not just successful entries.
- 9VDC Operation: Draws power from the existing strike circuit — no additional power supply or wiring infrastructure required. Reduces installation complexity and cost in retrofit scenarios where you're adding tamper monitoring to existing strike deployments.
- HID Credential System Integration: Works with HID-compatible access control panels, allowing tamper events to be logged in the same audit trail as badge swipes and PIN entries. Centralizes security event data in one system rather than requiring separate monitoring.
- Four Strike Model Compatibility: KIT-19038 is certified for STI strike models KIT-81, KIT-82, KIT-84, and KIT-86. Verify your installed strike SKU before ordering — incompatible strikes will not accept the tamper bit mechanical interface.
- Direct Strike Assembly Mounting: Uses existing strike fastening points — no drilling, no modifications to the strike housing required. Installation time typically under 15 minutes per door, making retrofit projects faster than full strike replacement.
- Normally Open/Normally Closed Contact Options: Supports both NC (alarm on tamper) and NO (normal operation disrupted on tamper) logic configurations. Choose the contact mode that fits your facility's security posture and alarm response protocol.
Integration & Compatibility
The KIT-19038 tamper bit mounts to the compatible strike assembly using existing fastening points — no additional drilling or frame modification. When installed, the mechanical arm responds to physical intrusion, closing or opening a contact that feeds directly to your access control panel. The 9VDC circuit already supplying the strike provides power to the tamper bit; no separate power supply is needed. Before installation, confirm your strike model is one of the four supported SKUs (KIT-81, KIT-82, KIT-84, KIT-86) by checking your system documentation or the label on the installed strike. Incompatible models will not mechanically accept the bit. During commissioning, test the tamper contact closure using a multimeter with the strike powered down to verify proper contact operation before system activation. Integration with HID-based access control systems allows tamper events to populate the same audit log as standard entry events, providing unified facility security reporting.
What's in the Box
- 1x KIT-19038 tamper bit assembly
Frequently Asked Questions
Q: Will the KIT-19038 work with my current strike, or do I need to replace it?
A: The KIT-19038 is designed to retrofit only STI strike models KIT-81, KIT-82, KIT-84, and KIT-86. Check your installed strike model number on the strike label or your system documentation. If your strike is one of these four models, the tamper bit mounts directly using existing fastening points. If your strike is a different model, you would need to replace the strike with a compatible model first.
Q: Does the KIT-19038 require additional power wiring beyond the strike circuit?
A: No. The tamper bit operates at 9VDC and draws power from the same circuit already supplying your electronic strike. No additional power supply or separate wiring run is required, which simplifies retrofit installation.
Q: What happens when the tamper bit detects an intrusion attempt?
A: The mechanical arm triggers a contact closure (normally open or normally closed, depending on configuration) that signals your access control panel. Your panel can then log the event, trigger an alarm, send an alert, or execute another security response based on your programmed logic. This creates an audit trail of bypass attempts, not just successful entries.
Q: Can I test the tamper bit before commissioning the system?
A: Yes. After installation, power down the strike and use a multimeter to test the contact closure. Press or manipulate the mechanical arm and verify that the contact opens or closes as configured. This confirms proper mechanical and electrical operation before the system goes live.
Q: Is the KIT-19038 compatible with non-HID access control systems?
A: The KIT-19038 is designed for HID-compatible access control systems. If your facility uses a different credential or panel architecture, confirm with your system integrator or vendor that the tamper contact signal can be received and logged by your panel before ordering.
The KIT-19038 is a straightforward retrofit solution for adding tamper awareness to existing strike deployments. If you're running STI KIT-81, KIT-82, KIT-84, or KIT-86 strikes across a multi-door facility and your access control panel already supports HID credentials, the KIT-19038 closes a real security gap — you'll log forced-entry attempts, not just successful badge swipes.
Technical Highlights:
- 9VDC Power Draw: Operates off the existing strike circuit with no additional power infrastructure. In a 20-door retrofit scenario, this eliminates the need for new power runs or supplemental PSUs, cutting installation labor and cost significantly.
- Mechanical Contact Triggering: Physical manipulation of the strike triggers a contact closure that your access control panel receives and logs. Unlike passive monitoring, this is hardware-level tamper detection — no software polling required.
- Four-Model Strike Compatibility: Works only with KIT-81, KIT-82, KIT-84, and KIT-86. Verify compatibility before order; mismatched strike models will not accept the tamper bit mechanical interface.
Deployment Considerations:
- Verify your installed strike model before ordering — incompatible models will waste time and require a strike replacement to proceed. Check the strike label or system documentation.
- The tamper bit responds to mechanical intrusion attempts (prying, forcing), not electronic bypass or credential spoofing. Use it alongside credential encryption and panel audit logging for defense in depth.
The KIT-19038 makes sense for retail, warehouse, or enterprise deployments where you need tamper visibility on controlled-access doors without replacing existing strike hardware. If your facility relies on STI strikes and HID-based access control, this is a cost-effective way to close the audit trail gap between successful entries and bypass attempts.
