Provide quality control for measuring various mechanical vibrations and run time and device maintenance 3. Automatic switching area, temperature measurement, automatic shutdown, backlight 4. Transmits vibrations to electrical signals to analyze the input signal and indicate acceleration, speed, vibration displacement 5. Mechanical, metallurgical Specifications: Acceleration Range: 0.1199.9 m / s2 Speed Range: 0.1199.9 m / s Movement Range: 0.001-1.999 m. Acceleration Frequency Range: 10 Hz1 kz(LO); 1 kHz15 kHz(HI) Frequency Speed: 10 Hz1 kHz Travel Range: 1 kHz. Accuracy: 1 kHz. 5% Hz 2 digits POWER:9V battery (not included) Product Net weight: 137g Product size: 150x70x30mm Working temperature: 040 degrees Celsius Package included: 1x Vibrometer 1x Split Probe 3x Probe Package included: 1x Vibrometer 1x Vibrometer Split Probe 3x Probe 1x Vibrometer 1x Vibrometer Split Probe 3x Probe