... 2011--Industrial Energy Meter, digital Watt Meter(Wattmeter) Features: Power Supply80-260V AC/DC or 18-30V AC/DC(24V DC)Measure ParametersRMS ... TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay ... -13435730867(Peter Liao) 2011--Industrial Energy Meter, digital Watt Meter(Wattmeter)