| 摘要 |
PROBLEM TO BE SOLVED: To improve the security by inputting a control signal to a switch group which set respective subordinate outlets so that electric power can be supplied in arbitrary combination according to power source control information read out of a medium wherein a combination of the subordiante outlets to be made ready for power supply is previously recorded. SOLUTION: The power plug of a terminal 101, etc., whose security function is not sufficient is connected to a subordinate outlet S, and a voltage led out of a main outlet M is distributed to subordiante outlets S. On ID cards 21 that only specific operators have, a combination of subordinate outlets to be made ready for power supply is recorded as the power source control information. Then a card reader 2 reads the power source control information out of the ID cards 21-24, a control part 3 inputs a control signal to switch groups 11-14 according to the power source control information, and the switch groups 11-14 set the respective subordinate outlets S in a power supply state in arbitrary combination. |
