... -22.000mA, -10.000V-+10.000V; 0.01Hz-10.00KHz. TK series digital Signal Generator Meter (V mV mA Hz) Features ... Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, Solid State Relay, Proximity Sensor, ,Pressure sensor ,load cell sensor, KNE KSC ...