---

void setup() {
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  
  Serial.begin(9600);
  Serial.println("=== Тест реле ACTIVE HIGH ===");
}

void loop() {
  Serial.println("Все реле ВКЛ (HIGH)");
  digitalWrite(7, HIGH);
  digitalWrite(8, HIGH);
  digitalWrite(9, HIGH);
  digitalWrite(10, HIGH);
  delay(1200);
  
  Serial.println("Все реле ВЫКЛ (LOW)");
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  delay(1200);
}