void setup() {
  pinMode(2, INPUT); //phototransistor
  pinMode(3, INPUT); //other phototransistor
  pinMode(7, OUTPUT); //relay

}

void loop() {
  
  { 
  if (analogRead(3) >= 800 || analogRead(2) >= 800){
    digitalWrite(7, LOW);
  }
  else{
    digitalWrite(7, HIGH); 
  }
}
}