Rotarex CLS Fire Suppression System The Rotarex FireDETEC Compact Line Suppression (CLS) system is designed to protect mobile and transportable equipment, such as buses and coaches, by detecting and suppressing fires inside the confines of vehicle engine compartments. The system, which is easy and flexible to install, features a continuous linear sensor tube that reliably detects and releases a choice of extinguishing agents using automatic pneumatic technology. The vehicle driver is also given an automatic warning signal to help protect valuable equipment and allow any passengers on board to safely evacuate. The FireDETEC CLS system is one of the most compact systems on the market. It has the capability to protect engine compartments up to 4m³. using just four litres of agent, available as an environmentally friendly foam concentrate or a biodegradable liquid-based water mist that contains glycol-free antifreeze. The system is also available with a choice of detection systems, pneumatic sensor tubing or electronic detection.