$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.

$239.00
SE
BOSEAN BH-90M-HCN Hydrogen Cyanide Gas Detector
0-50ppm
Range 0-50ppm, resolution 0.1/0. 01ppm, unit ppm, suitable for gas hydrogen cyanide, alarm point can be manually set, gas detection is carried out by natural diffusion, with good sensitivity and repeability.

$239.00
SE
BOSEAN BH-90M-CL2 Chlorine Gas Detector
0-20ppm
Range 0-20ppm, resolution 0.1ppm, unit ppm, suitable for gas chlorine, the alarm point can be set manually, the default alarm point of different gases is different, the response time T90 < 60s.

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