The KWJ Pragmatics Fire Arson Detector Model 626 Trooper 2 is a dual sensor accelerant detector. Durable MOX sensors are paired and response balanced to eliminate nuisance water vapors and pyrolitic materials vapors which are common interferences to most commercially available single sensor instruments. With accelerant sensitivity down to 1 ppm, dual sensor Pragmatics arson instruments will find trace hydrocarbons in 85% of the samples tested. Extremely durable and requiring no calibration, the Model 626 Trooper 2 is in use by arson investigators, insurance claim representatives and First Responders around the world. Contact us to request full specifications and pricing.