PURPOSE: To decrease the labor changing a code format and to reduce a cost only by assigning the custom code to every equipment by including the custom code into the code format and assigning the custom code to the machine type or equipment to be controlled.

CONSTITUTION: A bit '0', a bit '1' and a pulse width are set so as not to interfere with a usual code format, the number of the custom codes are 16 bits to be able to code with increase in the number of equipment, the number of data codes is 8 bits, the number of data inverting codes is 8 bits, the code format is constituted of 32 bits in total and the code after 6th word is made into a data code only. Further, in an one-shot mode, the word, which goes to the custom code format, is transmitted repeatedly five times, in a continuous mode, the word, which goes to the custom code format, is transmitted repeatedly five times when a key-on is continued, and when the key-on is further continued, the transmission of the word, which goes to an only data code format composed of only the data code, is continued.