| 摘要 |
<p>The door intercommunication system (3) has Bluetoothinterface (4) for establishing communication link (5) between the door intercommunication system and external device (6) such that the configuration of the door intercommunication system is changed using external device, after establishing a communication link. A switching unit is connected with intercommunication system over control line. A film is arranged in injection-molded housing (7). The light source (12) is activated if environment light detected by photo sensor (9) is smaller than threshold value. An independent claim is included for method for operating door intercommunication system.</p> |
