| 摘要 |
A two way video/audio wireless communication system having a video screen and an audio communication system attached on a peephole of a front door. The system has an automatic sensor on the door unit (PIR) that will take a photo of the guest and the image to the in door handheld unit. A built in answering machine to record video/audio messages left by visitors, and also store them on the door handheld unit. The system can be connected to the compute via USB or Bluetooth to check on the visitors. The video can be turned off/on at any time during transmission.
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