Records data on an SD card in Excel® format. Accepts interchangeable transducers with ranges of 30, 150, 300psi (transducers sold separately). Meter automatically senses plug-in transducer"s range and calibration. Displays 10 types of pressure units. Offset adjustment used for zero function to make relative measurements. Adjustable data sampling rate: 1 second to 8hrs:59min:59sec. Stores 99 readings manually and 20M readings via 2G SD card. Large backlit dual LCD display. Record/Recall MIN, MAX, Data Hold, Auto Power Off. Built-in PC interface. Complete with 6 x AA batteries, SD card, and hard carrying case (transducers sold separately)