Product Features: 1. Visually displays measurement value and state 2. Acceleration, velocity and displacement measurement 3. Different vibration frequency selection 4. High sensitivity probe for accurate measurement 5. Provides long and short probe head ,each one is suitable for different situation measurement. 6. Equipped with AC signal output interface 7. Low power indication function 8. Auto power-off function 9. LCD backlight 10. Simple to use, the structure is compact, portable for 11. carrying along with measurement        Specifications& 65306;                Measuring mode      piezoceramic accelerometer              Acceleration measurement range      0.1~199.9m/s2              Speed measuring range      0.1~199.9m/s              Displacement measurement range      0.001~1.999mm              Acceleration measurement frequency      10HZ~1KHZ(LO) 1KHZ~15KHZ(HI)              Speed measuring frequency      10HZ~1KHZ              Displacement measuring frequency      10HZ~1KHZ              observational error      ±5%H±2digits              AC Output      AC output Peak (display full range)              MAX      ---              temperature measurement      ---              unit conversion      ---              packing specification                    Power Supply      9VDC battery              Net Weight      147g              Product size      184*67*30mm              Packing      Color box              Standard carton capacity      40PCS              Standard carton size      52.0*40.0*49.0cm              Standard carton gross weight      12.5KG