Check the listing for details. FORTRESS SAFETY INTERLOCK, TGARD SERIES,THFSMELQ5, W/ LATCHING FUNCTION. Condition: Used. Listed at 200.00 USD. The Fortress Safety Interlock, TGARD Series, THFSMELQ5, with Latching Function is a high-quality industrial automation and motion control device designed for business and industrial settings. This interlock is specifically designed to provide safety and security in automated systems, ensuring that machinery operates only when it is safe to do so. The latching function adds an extra layer of security by preventing unintended operation, making it a crucial component for ensuring the safety of personnel and property in industrial environments.