How to Send Hexadecimal value to Serial Devices

Using Arduino Programming Questions
2 
Serial.write(0xAA);
Serial.write(0xBB);
Serial.write(0x06);
Serial.write(0x00);
Serial.write(0x00);
Serial.write(0x00);
Serial.write(0x01);
Serial.write(0x01);
Serial.write(0x03);
Serial.write(0x03);