手机端控制继电器有很高延迟 有人遇到过吗

void setup() {

  // initialize digital pin 13 as an output.

  pinMode(5, OUTPUT);

  pinMode(4, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

  digitalWrite(5, HIGH);   // turn the LED on (HIGH is the voltage level)

  delay(1000);              // wait for a second

  digitalWrite(5, LOW);    // turn the LED off by making the voltage LOW

  delay(1000);              // wait for a second


  digitalWrite(4, HIGH);   

  delay(1000);

  digitalWrite(4, LOW);

  delay(1000); 

}