CES Landtec SEM 500 TVA / OVA Surface Emission Monitor, used instrument came from local government installation, comes with portable unit with shoulder strap, AC charger, Probe gun with remote monitor, probe extension, gas valve, SEM 500 software disk, misc cables and SEM 500 Tool kit all housed in a foam lined Pelican 1600 Case, battery is currently under charge but no guarantee on battery life and like all high end instruments this should be calibrations prior to use. We dont guarantee accuracy