... 100KHz), accuracy: 0.01Hz. Applicable to equipment for control of frequency, tacho, line-speed, level, etc; The instrument ... has several parameters setting function, easy to operate.2, For other specialize teser for ... Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, ...