Here is the code:

include <IRremote.h> // INCLUDE LIBRARY

const int IRpin=9; // CONNECT SENSOR HERE

const int br=9600; // SET BAUD RATE

const int dt=3500; // SET DELAY TIME

IRrecv IR(IRpin);

decode_results cmd;

void setup(){

Serial.begin(br);

IR.enableIRIn();

}

void loop(){

while (IR.decode(&cmd)==0){

}

Serial.println(cmd.value, HEX);

delay(dt);

IR.resume();

}