Features: Measuring range:Acceleration:0.1~199.9m/s2; peak Velocity:0.1~199.9m/s Displacement:0.001~1.999 mm (P-P) LCD backlight display measurement result and conditions directly. Ambient temperature reading Degrees / Fahrenheit unit selectable. Measure acceleration, velocity, displacement. Uses Hi-sense of vibration sensor for accurate measurement. Equipped with two probes (S & L) to meet different measuring requirements. Provides a magnetic probe to fit the conditions on which it is uneasy to be held by hand. Low battery indication & Auto power off Max. value readout Specifications: Measuring range:Acceleration:0.1~199.9m/s2; peak Velocity:0.1~199.9m/s Displacement:0.001~1.999 mm (P-P) Accuracy: 5% +2digits Measuring frequency of acceleration: 10Hz~1KHz (LO); 1KHz~15KHz (HI) Measuring frequency of velocity/displacement: 10Hz~1KHz (LO) LCD display: 3 1/2 digits display General Characteristics: Operation temperature/humidity: 0~40 Degrees, 30~90%RH Power supply: 1*9V/6F22 battery(not included) Product Size: 15 * 6.5 * 3.5cm / 6 * 2.7 * 1.4in Product Weight: 165g / 5.8oz Package Size: 25.5 * 17.5 * 5cm / 10 * 6.8 * 2.0in Package Weight: 516g / 1.13lb Package List: 1 * Digital Vibrometer 1 * Detector Probe(L) 1 * Detector Probe(S, equipped on the main unit) 1 * Magnetic 1 * English Manual