Panel Tachometer, Minimum RPM 1 RPM, Maximum RPM 9,999 RPM, RPM Accuracy 0.4 Percent of Reading, RPM Resolution 0.001 RPM, Number of Digits 4, DIN Size 1/8, Cutout Height 1 3/4 in, Cutout Width 3 5/8 in, Output Current 5 A, Output Voltage 5V DC, Calibration Certificate Type Not Applicable, Input Voltage 120/240V AC, Digital Display Screen Type LED, Manufacturer Warranty Length 1 yr, Includes Stainless Steel Ball Bearing