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  • What's Channel Scan ?
    Channel Scan function means the receiver get real time signals from more than one camera by time divided method.
    Pictures from each channel continuous 5-6 seconds, and then jump to next and so on.
    What difference between wired and wireless ?
    A wired camera needs a cable that goes from the camera to a TV or VCR. 
    The video signal passed from the camera, through the cable, and to your TV or VCR, which allows you to see the picture. 
    All wired camera must use RCA cable to connect the camera to the TV and VCR.
    What is difference CCD and CMOS?
    CCD image sensor could provide better picture quanlity than CMOS with higher price.
    If you have advantage requirement on picture, we strongly recommend purchasing CCD cameras.
    What is Horizontal Resolution?
    Horizontal Resolution is a professional standard to evaluate the quality of TV picture.
    TV lines are the measure unit. The higher horizontal resolution means the better picture quality.
    For example, the horizontal resolution of DVD is 520 TV lines, and regular broadcast TV only get 330 TV lines, VCD is 240 TV lines, VHS is 220 TV lines.
    What is LUX?
    Lux refers to the amount of light that is needed for the camera to see.
    This becomes important if you need the cameras to see in low light.
    The lower the Lux is, the picture is better.
    What is Illumination?
    Generally, the illumination is the professional standard of the average brightness surroundings.
    The minimun illumination means that the darkest enviroment which camera could take normal picture.
    Illumination in normal situation as listed below:
    Under Sunshine: 50,000 Lux ~ 1,000,000 Lux
    Cloudy: 100 Lux ~ 10,000 Lux
    Shop: 75 Lux ~ 300 Lux
    Office: 300 Lux ~ 500 Lux
    Street lamp at night: 10 Lux
    What is weather-proof ?
    Weather-proof means the camera could resist wind, rain, dust, and other normal weather conditions.
    So the weather-proof cameras could be installed outdoor.
    What is Water proof ?
    Water proof means the camera could work normally in water.
    What is IR ?
    IR is the abbreviation for Infra Red.
    IR camera means the camera with IR compensation is able to take pictures in absolute dark enviroment.
    The pictures could be monochrome under IR lights.
    What is Night Vision ?
    Night Vision function means the camera has built-in IR lights and could take pictures in dark enviroment.
    Can I record the video?
    You can record the video and audio by connecting the receiver to VCR or DVR, or any other recording devices with "video-in" port.
 
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