DD06B-ESP32 Relay 10A 4CH-Test

// the setup function runs once when you press reset or power the board
void setup() {
  pinMode(25, OUTPUT);  //relay1
  pinMode(32, OUTPUT);  //relay2
  pinMode(26, OUTPUT);  //relay3
  pinMode(33, OUTPUT); //relay4
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(25, HIGH);
  digitalWrite(32, HIGH);
  digitalWrite(26, HIGH);
  digitalWrite(33, HIGH);
  delay(1000);  // wait for a second
  digitalWrite(25, LOW);
  digitalWrite(32, LOW);
  digitalWrite(26, LOW);
  digitalWrite(33, LOW);
  delay(1000);  // wait for a second
}