| 摘要 |
PROBLEM TO BE SOLVED: To provide an interphone which compulsorily makes non-operable a slave by operation on a master side to lessen consumption of a battery. SOLUTION: In an interphone which transmits and receives relative to a slave in which a battery is an electric source, a master 30 is provided with a stop instructing means 38 for transmitting an activation input acceptance stop signal (g) to a slave 1, and also a slave 1 is provided with an operation stop means 18 in which, when the activation input acceptance stop signal (g) is received, a power supply from transmission/reception parts 4, 5 to a battery 7 is intercepted, and also an activation means 2 is made non-operable. |
