Dickson PR100 Compact Pressure Data Logger, 0-100 PSI, 1 Second Sample Rate 0-100 PSI (PSI, ATM, Bar, mBar, InH2O, FtH2O, mmH2O, mmHG, InHg, Pascal, kP, MCA) Water resistant case 3 Year battery Pressure sensor includes built in diaphragm seal Delayed start