Features: It is a high-resolution multifunction intelligent frequency counter based on microprocessor. Frequency, period and equal-precision measurement. 3-step function selection, work state, unit and 8-digit LED display. Continuous and adjustable gate time. Low frequency and other precision measurement. Input attenuation, AC/DC coupling select. SKU: X1IN10123 Package Includes: 1 * VC3165 Frequency Counter