| 摘要 |
PURPOSE:To accurately grasp the state of an abnormality occurring in a house by providing an air monitor which detects the sound in the house at the time of abnormality detection to a house information board, and switching a speaking circuit extending to a control room master equipment to the output of the air monitor by a switching means. CONSTITUTION:If abnormality occurs in the house side, a transmission control part 32 sends a warning control signal to the control room master equipment 40, the warning control signal is received by a repeater 42, and an air monitor control instruction from the repeater 42 is received and discriminated by the transmission control part 32 of a receiver 30. The instruction is transmitted to the abnormality occurring house on the repeater calling of the abnormality occurring house and the air monitor control instruction is decoded from received data through the control processing of a repeater 21 provided to the door interphone slave equipment 20a of the abnormality occurring house to close the position (b) of the changeover switch 10 of the house information board 1a, and the sound detection signal in a room is amplified by an amplifier 12 and sent out to the speech line 70. Consequently, the air monitor output of the abnormality occurring house can be heard by the transmitter receiver 45 of the control room master equipment 40 to accurately judge the state. |
