Fortress Interlocks has introduced a range of key interlock modules for its eGard system that combines the functionality of trapped key interlocking with practically any combination of gate switch and/or control modules in one flexible unit. It simply clips together and is easily installed. Modules now include mechanical locks, electrical (solenoid) locks, safety switches, indicators and buttons, emergency stops, and a selection of actuators suitable for both hinged and sliding doors. eGard can connect to PLCs and mimic panels, or can be used on an AS-i network. There are over 4,000 billion combinations of modules possible, and the internal network is self configuring, for ease of installation and reconfiguring. Engineered for Category 4 applications, eGard is manufactured from corrosion-resistant glass reinforced PBT and has stainless steel parts for long life.