| 摘要 |
<p>A wireless audio-visual monitoring system with the function of a door-bell supplies detection of image- and audio-signals from the monitored zone so as ensure the security of the monitored zones. At least one door bell device is arranged at the input, several detection devices which are arranged in the monitored zones for detecting image and audio signals, and a monitoring device is connected to the door bell via a wireless transmission path and thus control both the audio -and the image-signals from the door bell device and the detecting devices via the wireless transmission path.</p> |
