... 3 alarm,8 segments output control DW series Single phase Electric Meter(vol/ampere/power/frequency/power factor) Features: 1) Input: 0 ... of products, including 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 ...