About the product1. This product adopts piezoelectric effect of artificial polarized ceramic for design. 2. It is suitable for monitoring of all kinds of vibrating mechanical facility, specially the vibration measurement of rotating and reciprocating machinery. 3. The unit can measure acceleration, velocity and displacement, which is widely used in mechanical manufacture, electric power metallurgy and general aviation etc. field.Features1. LCD displays measurement result and conditions directly 2. Measure acceleration, velocity and displacement 3. Selective vibration characteristic 4. Use hi-sense of vibration sensor, measuring accurately 5. Equipped two probes (S and L) to adapt the different measurement requirement 6. Provide a magnetic probe to fit the condition uneasy hold on by hand 7. Low battery indication 8. Auto turn off function 9. LCD back light function 10. Maximum value hold function 11. Temperature unit Celsius Degree / Fahrenheit Degree selectionSpecification: General Operating Temperature 0 ~ 40 Degree Celsius Temperature Range -10-80 Celsius Degree Operating Humidity 30-90%RH Accuracy +-5%+-2digits Display Update Cycle 1 second LCD Display 3 1/2 Digits Display Standby Current <=15uA Operating Current <=25mA Power Supply 9V 6LR6I battery (included) Battery Life 20H Continuous Use Measurement Range of Acceleration 0.1~199.9 m/s2 Peak Measurement Range of Velocity 0.1~199.9mm/s rms Measurement Range of Displacement 0.001~1.999mm p-p 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) Size 145mm x 72mm x 35mm Weight 229g Package Weight One Package Weight 1.09kgs / 2.40lb One Package Size 28.7cm * 18.5cm * 8cm / 11.3inch * 7.28inch * 3.15inch Qty per Carton 10 Carton Weight 11.90kgs / 26.23lb Carton Size 50cm * 40cm * 30cm / 19.69inch * 15.75inch * 11.81inch Loading Container 20GP: 444 cartons * 10 pcs = 4440 pcs 40HQ: 1031 cartons * 10 pcs = 10310 pcs