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DW8 series single phase coulometer

TOKY DW8 series single phase coulometer with follow Features: 
1) To measure true effective value (for AC signal); 
2) To measure voltage, current, power factor, active power, reactive power, appearant power and Kwh;

3) Two relay alarm output, alarm value set freely;

4) Some model with 4-20mA analog current output;

5) Some model with RS485 communication function.