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huynh anh

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The audio feature may refer to your camera receiving sound through a microphone, emitting audio through the speakers, but before it can transmit images, it must be converted into an Analog signal, then transferred to an analog receiver. For example: TV, analog recorder with Infrared The best security cameras offer real-time view and are equipped with two-way audio to prevent intruders from using your mobile device cannot do. Infrared will turn on when the viewing space lacks light, the light is dim or dark. 

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