Mileseey Handheld LCD Multifunctional gas detector 4 in 1 toxic harmful gas H2S/CO/O2/ EX gax Analyzer High Precision Detector
Default Gas Detector is CO/O2/flammable gas/H2S.
Other gas can be customized,please contact with us to before order(price is different).
Works well. Tried CO with automobile. Quickly alarmed.