... meter ampere meter 1) Range +/-19999, zero adjustment 2) 0.2%FS accuracy, RS485 ampere meter 3) CE, ISO certification 4 1/2 digital voltage meter ... function, users can read different value on PC, including measuring value, alarm hysteresis, transform rate, decimal point setting, ... AADP4-AV/DV/DA/AADP4-PAV/AVDP4-PDA/AA Measuring ModeDual intergral A/D convertInput CircuitSingle terminal inputDecimal ...