... -10.00KHz. TK series digital Signal Generator Meter (V mV mA Hz) Features: 1, Digital output: 0.000-100.00mV,0 ... in industrial site test, computer remote control system in factory,laboratory;3, Sensor power 24V/100mA available if needed.4, RS232 ... : 086-13217608016 TK series Digital Signal Generator Meter (V mV mA Hz)