Check the listing for details. Compustar Firstech FT-ELOCK Engine Lock Relay Starter Kill Alarm Engine Disable. Condition: New. Listed at 4.99 USD. The Compustar Firstech FT-ELOCK Engine Lock Relay Starter Kill Alarm is an essential security feature for your vehicle. Designed to work seamlessly with your existing remote start and entry system, this engine lock relay ensures your car stays where you left it. With the added peace of mind of an engine disable function, you can walk away from your car with the confidence that your engine is secured. Firstech's dedication to quality and reliability is evident in the FT-ELOCK's build and performance. Compatible with a wide range of Compustar and Firstech remotes, this engine lock relay is a straightforward addition to your vehicle's security arsenal, providing both protection and convenience. Keep your car safe and sound with this robust engine lock relay starter kill alarm.