... for qualified products in production line DR series Digital Resistance Meter with auto judgement(0.01-100 Ohm) The principle ... software.5, RS232 OR RS485 Modbus RTU protocol,connectable with various equipment,computer or PLC directly.6, Dimemsions: ... measurement field, such as machinery, electrical cabinet, power sub-station, industrial automation, etc.. Additonally,OEM service,Design service offer, ...