Q:What is the difference between a network video encoder and a hard disk video recorder? And bolt machine cameras are the same as security monitoring? What kind of network video encoder used

And DVR difference is still very large. Which company model does the video encoder belong to. Generally without storage function, without hard disk. Even if there is a belt, generally only with a hard drive. The recording time is short. Unlike the hard disk video recorder to bring 8 or more than 8 hard drives for storage. And DVR is also divided DVR and NVR. Like the general use of the encoder, is the NVR (network hard disk video) transmission line is through the network cable, rather than dvr is bnc line.

Q:What kind of surveillance camera is good for the hotel?

Such as the lobby: the general use of integrated zoom camera, the scene can be a point to enlarge the details.

Q:Monitor the camera why the black screen?

Fourth, the monitoring of the video signal line broken (including line damage, poor contact), but also cause a black screen

Q:There are cameras at the fork in the expressway

The third is to monitor the camera, this camera has a spherical, cylindrical, square box and so on. Some of these cameras with LED lighting device, at night to keep the light to ensure that the camera vision clear. Set the purpose of these cameras is mainly to capture the various types of information applied to the security prevention and control, according to the image records that the facts of the case, locked so that arrested all kinds of criminal suspects

Q:The camera used to monitor the color of the screen is not normal. Blue as red. Red out is blue. New to buy the camera

First of all, you have to make sure your camera is no problem. Secondly, I would like to ask. Your camera is a centralized power supply, or a single power supply, power supply line transformer is not too far away from the camera

Q:Monitor the camera's 4-way, 8-channel What does it mean! The

4 Road, 8 Road refers not to monitor the camera, but the number of hard disk recorders. 4-way hard disk video recorders can take up to 4 cameras, 8-way hard disk video recorders can take up to 8 cameras, in addition to 16, 24, 32 and so on.

Q:I now on the 4th floor balcony by a monitor, the main monitoring downstairs car, what kind of camera is good

Probably give you the next, the higher the number of lines the better the clarity of the camera, 480 lines enough for you to use, as the number of the larger number of millimeters, the narrower the narrow range, but clearly, the small number of meters wide to see the corresponding objects smaller

Q:Monitor how the camera will suddenly no color

2, the normal light, manual control with a switching function of the camera to black and white mode;

Q:Monitor the flash indicator on the DVR panel

Which lights are flashing? Hard disk lights and network lights flash is normal

Q:Monitor the camera screen black

2, the channel can be displayed on the screen can not be displayed on the screen channel.If no picture that you install the software problem, re-install the driver. Or reinstall the software, remember to restart