... analyze the CH4 and CO2 BX569A Portable biogas Detectors with pump BX569A portable biogas Detectors with pump, adopting NDIR detecting principle, ... it easily-Advanced long-life NDIR gas sensor-Audio, video and vibration alarm-Low voltage alert-Important setting used ... high-strength plastics with skidproof rubber,-The housing is hi-strength,feel very nice.Specifications: Target gas:CH4 and ...