... 20mA output 4)AC/DC current DP4 Digital Ammeter/Voltmeter/Ohmmeter series are intelligent digital power meter, designed as high quality and ... Quality,Strong Anti-JammingAdvanced SMT technology and Modular StructureCan select Relay alarm output: High, Low limit alarm(Option)Can select ... four digits, 7 segments LEDModular Output :Relay High Limit Alarm,220VAC/0.8A,NO: Relay High Limit Alarm,220VAC/0.8A,NO ...