... Digital Ammeter,Voltmet 1)Accuracy +-0.2%FS+1digit 2)AC/DC current or voltage 3)Modular output: Alarm, RS485 DP4-RMS ... Quality,Strong Anti-JammingAdvanced SMT technology and Modular StructureCan select Relay alarm output: High, Low limit alarm(Option)Can select 4 ... .8A,NO: Relay High Limit Alarm,220VAC/0.8A,NO: 4-20mA, 0-10mA signal ouptut:RS485, RS232 communicationAlarm type : High and ...