Multimeter 5 or 6 digit(24 byte A/D calibrator) Data/ ... RS485/232 2011--DP5/6 Precision Sensor Controller and Calibrator,Multimeter for measurement & analysisFeatures: 1, Full 5/6 digit display for ... .power: +12V/40mA, 24V/30mA.5, Communication: standard RS232/RS485 interface, MODBUS RTU protocol, realize remote control by direct connection with PC ...