unsigned long interval=1000; // the time we need to wait
unsigned long interval1=2000;
unsigned long previousMillis=0; // millis() returns an unsigned long.
unsigned long previousMillis1=0;
 
bool ledState = false; // state variable for the LED
bool ledState1 = false;
 
void setup() {
  Serial.begin(9600);
 pinMode(15, OUTPUT);
 digitalWrite(15, ledState);
 pinMode(2, OUTPUT);
 digitalWrite(2, ledState1);
}
 
void loop() {
 unsigned long currentMillis = millis(); // grab current time
 
 // check if "interval" time has passed (1000 milliseconds)
 if ((unsigned long)(currentMillis - previousMillis) >= interval) {   
   ledState = !ledState; // "toggles" the state
   digitalWrite(15, ledState); // sets the LED based on ledState
   
   // save the "current" time
   previousMillis = millis(); 
   Serial.print("Kondisi Lampu 1 = ");
   Serial.println(ledState);  
 }

 if ((unsigned long)(currentMillis - previousMillis1) >= interval1) {   
   ledState1 = !ledState1; // "toggles" the state
   digitalWrite(2, ledState1); // sets the LED based on ledState
   
   // save the "current" time
   previousMillis1 = millis();
   Serial.print("Kondisi Lampu 2 = ");
   Serial.println(ledState1);
 }
}