MadgeTech PR2000-100- psig Pressure Data Logger with LCD, 0-100 psig Pressure Range Large, backlit LCD display, front keypad with lock feature Standard 1/4" NPT fitting, high speed download Real-time operation, user-selectable measurement units, minimum/maximum and average statistics Programmable start/stop time, convenient status indicators, user replaceable batteries Not Included Required Accessory: IFC200 (includes software)