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更新日期：2018-08-19
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版本需求：Android 4.0.3 以上版本
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How Does A Security Camera Work?
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Basically, a camera set into position with the help of what is known as a video transmitter running to a receiver allows the view from a security camera in a specific place or aimed in a certain direction, such as in a parking lot or door entrance. The security camera whether it is wireless or not, then makes it possible for the surveillance of anyone or anything through sending visual signals through the lenses back to a security monitor which is connected directly to the system.
In some cases security cameras are remotely operated, while others rely on the actual surveillance of a person sitting in front of the security monitor at all times in a separate area. Another form of security camera, simply records the surveillance and it can be viewed at another point and time. Security cameras all have to have power of some kind in order to work however.
Additionally security cameras work on frequencies as well as range. Different concepts are taken into consideration when a security camera is installed. Therefore, there are many security cameras on the market today. Some are better than others, while some security cameras are basic and simple, to those security cameras that are very complex.
One of the worst materials a security camera would have to go through would be metal, these types of security cameras are high frequency cameras and are very expensive. Most wireless cameras are limited to four different frequencies while others that must have hidden video lines such as in ceilings or walls can have additional frequencies. The range of reception on security cameras vary.
Security cameras provide the initial perception that the issue is safety, while the second of course is protection, from theft or vandalism of property. The security cameras come in many different designs as well as types. Some security cameras help assist authorities when trying to apprehend suspects in crimes or other acts of violence, or vandalism.
In this audiobook you read about these topics:
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01 - How Does A Security Camera Work?
02 - In Some States Security Cameras Are Being Put Into School Buses
03 - New Concept of Remote Security Cameras
04 - Security Camera being Installed In Parks
05 - Security Camera In Amusement Parks
06 - Security Cameras Discreetly on Armored Trucks
07 - Security Cameras are Illegal In Banks And Private Businesses In Canada
08 - Security Cameras Are Placed At Some Intersections.
09 - Security Cameras Checking Luggage Before Placed on Airplanes
10 - Security Cameras Can Provide Safety
and much more!
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DISCLAIMER:
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This audiobook is in English.
This audiobook require android tts - text to speech.
The text-to-speech (TTS) technology may not be available in some devices. To check if your phone is able of speech synthesis: Menu -> Settings -> Voice input & output -> Text-to-speech settings.
If not installed, your device may ask you to install the TTS engine. An internet connection may be required.
Image sources used in this audiobook:
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https://pixabay.com/en/video-video-surveillance-547505/
https://pixabay.com/en/cctv-security-camera-1144366/
