To prevent the competition of a smart entry system and a wireless system by giving a degree of priority to the smart entry system and the wireless system.

A transmitting means 16, a receiving means 20, and an equipment control means 10 are provided in a traveling body, returning means 26, 28, 30 and user operation means 30, 32, 34 are provided in a portable machine, and an order of priority is given to the transmitting operation of identification signals by the returning means 26, 28, 30 and the transmitting operation of identification signals by the user operation means 30, 32, 34. In this way, it is possible to prevent the competition of a smart entry system and a wireless system by giving the order priority to the transmitting operation of the identification signals by the returning means 26, 28, 30 and the transmitting operation of the identification signals by the user operation means 30, 32, 34.