#include <PZEM004Tv30.h>
#define relay 18

PZEM004Tv30 pzem(&Serial);


float voltage, current, power, frequency, pf;

 void setup()

{


Serial.begin(9600);

pinMode(18,OUTPUT);

digitalWrite(18, HIGH);

 }


void loop()

{


voltage = pzem.voltage();

current = pzem.current();

frequency = pzem.frequency();

power = pzem.power();

pf = pzem.pf();


Serial.print("Voltage = " +String(voltage)+" Volts");

Serial.print("\t Current = "+String(current)+" Amps");

Serial.print("\t Frequency = "+String(frequency)+" Hz");

Serial.print("\t Power = "+String(power)+" Watts");

Serial.println("\t Power Factor = "+String(pf)+"");

delay(1000);


}