STI TL644 Thumb Lock

STI TL644 Electronic Thumb Lock

Overview

The STI TL644 is a 9VDC-powered electronic thumb lock designed for access control systems requiring compact strike functionality. The thumb lock mechanism provides tactile, ergonomic operation while maintaining electronic control through standard access control panels and credential readers. Typical deployment: commercial doorways and institutional facilities where space is tight and straightforward electronic strike control is the priority — not a full electric strike assembly, just the locking mechanism itself.

Compatibility

The TL644 integrates into access control systems powered by 9VDC architecture. Compatible with standard electronic lock controllers, relay outputs, and credential reader systems used in commercial security integrator deployments. Suitable for door-mounted installations in environments requiring programmable access management through standard access control protocols and wiring.

Installation Notes

Operates on 9VDC power — confirm your access control panel or power supply can deliver this voltage to the device. Mounting requires standard door-frame preparation; exact torque and wiring specifications should be verified against your system's installation guide and the TL644 integration documentation from your access control vendor. Ensure proper gauge wiring for 9VDC lines to avoid voltage drop over extended runs.