Universal IR remote Receiver

#include <IRremote.h>
#include <IRremoteInt.h>
 
// Here we have....
int RECV_PIN = 11;  // Data input pin for the ky-022
int DOWN_PIN = 8;   // Data output pin for the NPN transistor shorting DOWN to GND
int PTT_PIN  = 10;  // Data output pin for the NPN transistor shorting PTT to GND
int UP_PIN   = 9;   // Data output pin for the NPN transistor shorting UP to GND
// Arduino-IRremote Library Initialisation
IRrecv irrecv(RECV_PIN);
decode_results results;
 
void setup()
{
  Serial.begin(9600);
  irrecv.enableIRIn(); // IR-receiver start
  Serial.println("IR-Receiver started\n");
  // I set all pins to LOW for safety reasons
  digitalWrite(PTT_PIN, LOW);
  digitalWrite(UP_PIN, LOW);
  digitalWrite(DOWN_PIN, LOW);
  Serial.println("All output pins set to LOW\n");
}
 
// Main program
void loop() {
   
  // Check for received signals
  // Note: The 'delay' is just a placeholder for what your rig wants to recognize
  // shorting the transistors as keypress ;-)
  if (irrecv.decode(&results)) {
    switch (results.value) {
    case 0xFFE21D:
        Serial.println("PTT ON\n");
        digitalWrite(PTT_PIN, HIGH);
    break;
    case 0xFFA25D:
        Serial.println("PTT OFF\n");
        digitalWrite(PTT_PIN, LOW);
    break;
    case 0xFF22DD:
       Serial.println("DOWN\n");
       digitalWrite(DOWN_PIN, HIGH);
       delay(250);
       digitalWrite(DOWN_PIN, LOW);
    break;
    case 0xFF02FD:
       Serial.println("UP\n");
       digitalWrite(UP_PIN, HIGH);
       delay(250);
       digitalWrite(UP_PIN, LOW);
    break;
    default:
       Serial.println("Ignoring this one:\t");
       Serial.println(results.value, HEX);
    break;
    }
    irrecv.resume(); 
  }
}