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Unmanned telephone assistance post for calling emergency services - has control devices for safety devices at assistance post operated by placing assistance call
Unmanned telephone assistance post for calling emergency services - has control devices for safety devices at assistance post operated by placing assistance call
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机译:用于呼叫紧急服务的无人电话援助哨所-在援助哨所设有安全装置的控制装置,通过发出援助电话来操作
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摘要
The unmanned assistance post has a telephone for requesting aid and safety devices operated when a call is put out, to illuminate the post, to provide a visual signal and an audible alert and to open doors automatically. An automatic answering device is connected to the telephone, with the control system actuating the safety devices also acting the answering device, in response to the assistance call being made, e.g. via a relay electromagnetically supplied via the telephone line. Pref. these control devices use a main relay controlling a contactor relay, with its contacts allowing the voltage to be supplied to the safety devices and the answering device. The main relay controls the contactor relay sequentially via a repetition device.
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