| 摘要 |
PROBLEM TO BE SOLVED: To secure high crime preventability and convenience by maintaining an optimum communication range even if an object be controlled is changed and to provide a simple device constitution for a control device (to perform radio communications for verifying collation, etc., between a portable device and main body device) which has both functions as a keyless entry system and as an immobilizer system. SOLUTION: The control circuit 55 or 21a of the portable device 10 or main body device 20 is constituted in such a way as to switch the transmission output of a pair of means of communications for collation for radio communications according to an object to be controlled (to switch a communication-capable range to a relatively narrow range only within a cabin in an inmmobilizer system). |
