The vibration meter is not a vibration pen; it's a meter. A meter that eliminates the confusion of vibration screening and provides reliable measurements you can trust to make critical go or no-go maintenance decisions. Overall vibration measurement (10 Hz to 1,000 Hz) for acceleration, velocity and displacement units of measurement for a wide variety of machines. Crest factor+ provides reliable bearing assessment using direct sensor tip measurements between 4,000 Hz and 20,000 Hz. Colored lighting system (green, red) and on-screen comments indicate how much pressure needs to be applied to take measurements. Temperature measurement with infrared temperature sensor increases diagnostic capabilities. On-board memory holds up to 3500 measurements. Audio output for listening to bearing tones directly. External accelerometer support for hard to reach locations. Flashlight for viewing measurement locations in dark areas. Large screen with high resolution for easy navigation and viewing. Low frequency range (overall measurement): 10 to 1,000 Hz. High frequency range (CF+ measurement): 4,000 to 20,000 Hz. Vibration limit: 50 g peak (100 g peak-peak). A/D converter: 16-bit. Signal to noise ratio: 80 dB. Sampling rate: Low frequency - 20000 Hz, High frequency - 80,000 Hz. Real time clock backup: coin battery. Battery type: AA (2)lithium iron disulfide. Battery life: 250 measurements. Measures 9-1/2" length by 2-51/64" width by 2-19/64" height.