Designed for hazardous industries where fast fire detection is critical and nuisance alarms are not an option! The Micropack FDS303 is an explosion-proof multi-spectrum IR flame detector. The device delivers superior performance, responding to hydrocarbon liquid fuel and gas fires at long distances. The FDS303 has been tested by Factory Mutual to detect a hydrocarbon fuel pan fire at 60 m (~ 200 feet) in 5 seconds.