| 摘要 |
PURPOSE:To make communication with an outdoor slave set and between indoor equipments convenient by providing an indoor master equipment provided with functions of transceiver and the indoor slave equipments communicable with the master equipment by radio. CONSTITUTION:In bringing the outdoor slave equipment A and the outdoor master equipment B to the normal mode, the indoor master equipment B is hung onto the mounting seat plate provided on a wall face. The moving contact pieces of changeover switches 41, 42 contact contacts a1, a2 to attain talking. In talking between the indoor master equipment B and the indoor slave equipment C, the indoor master equipment B is removed out of the mounting seat plate. Respective pressing contact pieces of the changeover switches 41, 42 is changed over to contacts b1, b2, a microphone M1 and a speaker S1 are connected respectively to a transmission section 21 and a reception section 22 to attain the talking with the indoor slave equipment C.
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