Features:1. Visually displays measurement value and state2. Acceleration, velocity and displacement measurement3. Different vibration frequency selection4. High sensitivity probe for accurate measurement5. Provides long and short probe head, each one is suitable for different situation measurement.6. Equipped with AC signal output interface7. Low power indication function and auto power-off function8. LCD backlight for easy reading.9. Simple to use, the structure is compact, portable for carrying along with measurementSpecification:Condition: 100% Brand NewBrand: SMART SENSORModel: AS63ATechnical parameter Technical specification Vibration pickup Piezoelectric ceramic accelerometer (shear-type) Measurement range of acceleration 0.1-199.9m/s peak Measurement range of velocity 0.1-199.9mm/s rms Measurement range of displacement 0.001-1.999mm p-p (Velocity and displacement range is limited by acceleration199.9m/s2) Measurement accuracy 10%+2digits Measurement frequency range of acceleration 10Hz-1KHz (LO) 1KHz-15KHz (HI) Measurement frequency range of velocity 10Hz-1KHz (LO) Measurement frequency range of displacement 10Hz-1KHz (LO) Displays update cycle 1 seconds LCD display 3 1/2 digits display Single output AC output 2 V peak (display full scale) Load impedance 10Kor more earphones can be connected Power supply 9V battery (not include) Static current 20A Operating current 25mA Auto power-off function Turns off automatically after 60 seconds LCD backlight function 7 seconds Operating temperature range 0-40 Operating humidity range 30-90%RH Low battery indication 6.9V0.2VWeight: Approx. 648g / 22.9ozSize: Approx. 17 * 6.5 * 3cm / 6.7 * 2.6 * 1.2in(probe is not included)Package List:1 * Vibration Meter2 * Probes