... LCD display BX170 portable single gas detector can make continuous detection to ... It has good sensitivity and reproducibility. The detector adopts embedded MCU controller, easy to operate. ... ;Explosive proof housingGas Detected:combustible gas(CH4,C3H8,H2)and toxic gas, oxygen, Other rare toxic gas ... like NO,PH3,NH3,NO2,HCN,SO2 PH3,NH3,NO2,SO2 LCD CO Portable gas detector ...