Model: VM6370 Application: used for measuring periodic motion, to check the imbalance and deflecting of moving machinery. Is pecifically designed for present measuring various mechanical vibration. So as to provde the data for the quality control, run time and equipment upkeep. It use the high-performance acceleration meter, realize the repetitiveness and accurate measurement. It has the function of displaying "Velocity, Acceleration, Displacement" in same time. SPECIFICATIONS Display: 4 digit LCD backlit Measurement Range: Velocity : 0.01-400.0 mm/s 0.000-16.00 inch/s true RMS Acceleration : 0.1-400.0 m/s2 0.3-1312 ft/s2 0.0-40g equivalent peak Displacement : 0.001-4.000mm 0.04-160.0 mil equivalent peak-peak Frequency Range for Measuring:10Hz. to 10kHz. Accuracy: 5% of reading + 2 digits Metric/ Imperial conversion Analogue Output: AC output 0~2.0V peak full scale (load resistance: above 10k) With Max. value hold and low battery indication PC interface: RS232C or Bluetooth interface ( Cable and software is not included) Power supply: 2x1.5v AA size (UM-3) batteries Power off : Manual off at any time or auto power off is enabled by user Operating conditions: Temperature : 0-50 ℃ Humidity : below 95% RH Dimensions: 124x62x30mm/4.9x2.4x1.2 inch Weight: 120g (not including batteries) Accessories included : Powerful rare earth magnet 1 pc. 　　　　　　　　Accelerometer 1 pc. 　　　　　　　　Stinger probe (Cone) 1 pc. 　　　　　　　　Stinger probe (Ball) 1 pc. Carrying case 1 pc. Operation manual 1 pc. Optional accessories: Headphones for use as electronic stethoscope Cable and software for RS232C