... monitor,Explosion proof,intrinsically safe,Corrosion resistant,4-20 mA or CAN bus output HK-7200AToxic Gas Detector OverviewThe Ex HK ... of hazardous gas leaks in ambient air and provides a 4~20mA output signal that can be connected to a controller,PLC, ... --- stable, sensitive,reliable, anti-poison, anti-interference.Fast response 4-20mA or CAN bus output12VDC battery backup Unique magnetic pen design ...