Features: Vibration Meter/Datalogger - saves data on an SD card in Excel ® format for easy transfer to a PC for analysis Remote vibration sensor with magnetic adapter on 47.2"(1.2m) cable Wide frequency range of 10Hz to 1kHz Basic accuracy of ±(5% + 2 digits); Meets ISO2954 RMS, Peak Value or Max Hold measurement modes Adjustable data sampling rate: 1 to 3600 seconds Datalogger date/time stamps and stores readings on an SD card in Excel ® format for easy transfer to a PC Offset adjustment used for zero function to make relative measurements Large backlit LCD Stores 99 readings manually and 20M readings via 2G SD card Record/Recall MIN, MAX readings Data Hold plus Auto power off with disable function Built-in PC interface Spec Sheets Extech SDL800 Data Sheet Specifications Acceleration 656ft/s2, 200m/s2, 20.39g Velocity 7.87in/s, 200mm/s, 19.99cm/s Displacement 0.078in, 2mm (peak-to-peak) Resolution 1ft/s2, 0.1m/s2, 0.01g; 0.01in/s, 0.1mm/s, 0.01cm/s, 0.001in, 0.001mm Basic accuracy ±(5%+2 digits) Memory 20,000K data records using 2G SD card Dimensions 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm) Weight 21.1oz (599g)