Feature: 1. Simple to use, the structure is compact, portable for carrying along with measurement. 2. Digital display LCD large screen, visually display measurement value and state. 3. It can measure acceleration, speed and displacement, and choose different vibration frequency characteristics. 4. Highly sensitive probe, accurate measurement, equipped with AC signal output interface. 5. With low battery indicator function, automatic shutdown function, LCD backlight function. Specification: Item Type: Vibration Meter Material: ABS Color: As shown in the picture Acceleration Measurement Range: 0.1~199.9m/s peak Speed Measurement Range: 0.1~199.9s effective value Displacement Measurement Range: 0.001~1.999mm peak Measurement Error: 5%2digits (ie 2 words) LCD Display: 3 and a half digits display Acceleration Measurement Frequency Range: 10Hz~1KHz 1KHz~15KHz Speed Measurement Frequency Range: 10Hz~1KHz Frequency Range of Displacement Measurement: 10Hz~1KHz Display Data Replacement Cycle: 1 second Power Supply: 1 x 9V alkaline battery (not included) Data Output: AC output 2V peak (display full range) Load: 10k or high-impedance headphones can be connected Quiescent Current: 20A Working Current: 25mA Automatic Shutdown Function: Automatic shutdown within one minute of no operation LCD Backlight Function: Turn off after 7 seconds of no-operation Operating Temperature Range: 0~40 Working Humidity Range: 30%~90%RH How to Use Get the product, open the power cover of the back cover, install the battery, close the back cover, lightly press MEAS/ON to turn on, long press MEAS/ON to measure immediately, long press MEAS/ON, release the button The data can be displayed. LO/HI is the switch of high and low frequency, it can also be calibrated to zero, and the unit of A/V/D can be switched. The product is simple to operate and compact. . Package List: 1 x Vibration Meter(Battery Not Included)1 x Instruction Manual1 x Long Probe1 x Short Probe (installed on the host)1 x Packing Box