Brand：
$257.00
SE
BOSEAN BH-60-O3 Fixed Ozone Detector with Display + Alarm 0~20ppm
electrochemistryozone
$327.00
SE
BOSEAN K-G60 (CH2O) Industrial Formaldehyde Gas Alarm Detector
Formaldehyde CH2O0~20ppm
Fixed, measure combustible gas (CH2O), range 0-20PPM, multi-parameter LCD digital display, full software calibrate, semiconductor nano-process, infrared remote control remote operation, up to 8 meters.
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