int Reiay_in1 = 5 ;
int LED1 = 4 ;
int Sw1 = 6 ;
void setup(){
Serial.begin(115200);
pinMode(Reiay_in1, OUTPUT);
pinMode(LED1, OUTPUT);
pinMode(Sw1, INPUT);
Serial.println("tiw4002");
}
void loop(){
int ATTC_Sw1 = digitalRead(Sw1) ;
if ( ATTC_Sw1==LOW) {
Serial.println("LED1");
digitalWrite(Reiay_in1, HIGH);

} else {
digitalWrite(Reiay_in1,LOW);
}
delay(500);

}