$434.00
SE
KORNO MOT500-H2-Y Hydrogen Detector 0-500ppm
H20~500ppmDiffusion, flow, pump suction optional
H2, range 0~500ppm, resolution 0.1ppm, Linearity ≤ +/- 1%, detection accuracy ≤ +/- 3%

$397.00
SE
KORNO GT-903-H2-Y Hydrogen Detector, Range 0-500PPM
H20~500ppmpump suction
Pump suction sampling, detection of H2 concentration, range of 0-500PPM, Electrochemical sensor principle, with storage, data export, Temperature Humidity detection and other functions.

If you don't know how to choose "Gas detector", please consult customer service.