Integral Semiconductor Sensor (Range 0 – 10,000 ppm), providing fast response leak detectionPPM , LEL and volume flammable gas ranges for leak detection, general safety monitoring and barholingAudible and visual ‘Geiger’ alarm indication on ppm rangeIntegral pump with pressure sensor for flow fail detection with sample path protected by hydrophobic filterRugged polypropylene case, sealed to IP54 rating, suitable for outdoor use