... ,level 4/5/6 digit display. Digital RPM Tacho meter/ Techometer (FA) Usage: Applications with control equipments for ... etc. Or power frequency(AC 0- 600V),range 0.01Hz--100KHz, resolution: 0.01Hz. Display digit & modes: 4 digit ... (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, ...