const int relPin3 = 3;
const int relPin4 = 4;
const int relPin5 = 5;
const int relPin6 = 6;
const int relPin7 = 7;
const int relPin8 = 8;
const int relPin9 = 9;
const int relPin10 = 10;

void setup() {
    pinMode(relPin3, OUTPUT);
    pinMode(relPin4, OUTPUT);
    pinMode(relPin5, OUTPUT);
    pinMode(relPin6, OUTPUT);
    pinMode(relPin7, OUTPUT);
    pinMode(relPin8, OUTPUT);
    pinMode(relPin9, OUTPUT);
    pinMode(relPin10, OUTPUT);
}

void loop() {
    digitalWrite(relPin3, HIGH);
    digitalWrite(relPin4, HIGH);
    digitalWrite(relPin5, HIGH);
    digitalWrite(relPin6, HIGH);
    digitalWrite(relPin7, HIGH);
    digitalWrite(relPin8, HIGH);
    digitalWrite(relPin9, HIGH);
    digitalWrite(relPin10, HIGH);

    delay(1000);

    digitalWrite(relPin3, LOW);
    digitalWrite(relPin4, LOW);
    digitalWrite(relPin5, LOW);
    digitalWrite(relPin6, LOW);
    digitalWrite(relPin7, LOW);
    digitalWrite(relPin8, LOW);
    digitalWrite(relPin9, LOW);
    digitalWrite(relPin10, LOW);

    delay(3000);
}