... ,etc RS485/232 2011--DP5/6 Precision Sensor Controller and Calibrator,Multimeter for measurement & analysisFeatures: 1, Full 5/6 digit ... , range: -19999--99999, 6 digit (24 byte A/D calibrator), range:-199999- 999999. Data/ peak value holding function for option ... selectable4, Aux.power: +12V/40mA, 24V/30mA.5, Communication: standard RS232/RS485 interface, MODBUS RTU protocol, realize remote control by ...