GMI PS200 Description PS200 Series detects all possible combinations of LEL, O2, CO, H2S, including single gas detection. In addition to displaying all gas readings simultaneously, the user can also initiate a manualbump test anytime The PS200 accessory pack includes the following as standard: USB Charging/Comms Clip, Universal Power Plug, User CDROM, Quick Operating Instructions.… Continue reading GMI PS200 Portable 4 Gas Monitor for LEL O2 CO H2S