| 摘要 |
<p>This invention comprises: a master device (10) including a time setting unit that sets a time and a first relay that is provided in a power-feeding path leading to a first load, the master device having the function of controlling the first relay at the time set by the time setting unit; and at least one slave device (20) including a second relay that is provided in a power-feeding path leading to a second load. The second relay opens or closes the contact point (25ab) of the second relay in synchronization with the operation of opening or closing the contact point (5ab) of the first relay performed by the first relay.</p> |
