Door communication system - has electric bell and speaker installation which is connected through control unit with answering machine that is activated by electric bell
The door communication system includes a speaker (1) fitted to the garden gate, a communication point (2) which is situated in the house, and a control unit (3) also in the house. The control unit is connected through electric lines (100,101) with the speaker and communication point. The speaker uni...
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| Format: | Patent |
| Sprache: | eng ; ger |
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| Zusammenfassung: | The door communication system includes a speaker (1) fitted to the garden gate, a communication point (2) which is situated in the house, and a control unit (3) also in the house. The control unit is connected through electric lines (100,101) with the speaker and communication point. The speaker unit consists of an electric bell (4), a loudspeaker (5) possibly with an amplifier and a microphone (6). The communication point contains a bell (7), a loudspeaker (8) and a microphone (9), along with a door-opening button (10), for releasing the electric door lock on the gate. The control unit includes a microprocessor with memory (RAM), a programme and data memory, an interface, a keyboard and a display. |
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