| 摘要 |
The invention makes it possible to reproduce pre-recorded messages in the event of certain events occurring, such as a door opening, calls being made to homes, fire or intrusion alarms, etc. It has a sequencer 9 with which it connects a detector 8 and a clock unit 10, and whose output is conveyed to a memory 13 in which digital samples of the sound message are stored. The output of the memory 13 is connected to a converter unit 14 followed by an amplifier 17 whose output 18 will contact the amplifier of the electronic door answering device installation in which the device is applied. <IMAGE>
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