... Modular output: Alarm, RS485 DP4-RMS Digital Ammeter/Voltmeter series are intelligent digital power meter, designed as high quality and ... port(Option)High & Low Alarm value, measured value and signal output value can be set flexibly.The user ... ammeter, voltmeter, current meter, voltage meter, power meter, pannel meter, ohmmeter, high-impendence ohmmeter DP4-RMS Intelligent Digital DC/AC Ammeter ...