... alarms,4-20mA output. DH series Voltage and Ampere meter Features: 1) Two isolated Input: AC 0-600V ... Temperature Controller, Digital Adjustor, thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter, Timer ... Barbara Guo) 86-13435730867(Peter Liao). DH series Digital Voltage and Ampere meter