Q:What is the meaning of monitoring the focal length in the camera?

So, you want to see a wide range, to choose a small aperture of the lens, but to see the target will be smaller.

Q:Wireless remote monitoring camera farthest to monitor how far

As long as there is a mobile Internet, where you can see, there is no distance limit. The

Q:There are cameras at the fork in the expressway

The second is the security card mouth camcorder, the public driving through this camera often found that regardless of speed will flash lights take pictures, in fact, encountered this situation and do not panic. Its main role is to import and export vehicles and personnel to monitor the investigation of suspicious vehicle screening clues to help Interpol and other staff to trace the staff involved. This camera appearance and speed camera no significant difference.

Q:Surveillance video can only save 4 days (the original can save about 15 days), is not the hard disk video recorder is a problem?

Under normal circumstances is not the problem, is not you debugging the camera, changed the size of the video image?

Q:Monitor inside the infrared network camera infrared light automatically switch and synchronous switch What does this mean?

Automatic switching --- through the image sensor to detect the ambient brightness, in the scheduled ambient brightness switch image color mode. The The The

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

This is the reason for the collection card, the problem is installed after the acquisition card.

Q:3.6mm and 6mm surveillance camera can see the screen angle is how much

This depends on how much the face of the CCD friends, 1/3 is 71 degrees 1/4 is more than 51 degrees

Q:Night to monitor the infrared light is not bright because it is not open monitoring?

2: the camera where the environment is too bright, surrounded by incandescent or other light source, the camera will not enter the night mode, it will not open the infrared light

Q:How does the surveillance camera solve the backlight problem?

First, adjust the orientation of the entrance camera equipment, try to avoid direct sunlight from the outside, to a large extent to improve the entrance of the backlight appearance. For example, the bank door equipment needs to monitor the staff to monitor the entry and exit personnel, if we will be facing the entrance of the camera equipment, you can encounter a more severe anti-light appearance, will cause the camera to monitor the screen black, can not see what photos, At this time, the engineers will monitor the entrance of the camera flip, so that the camera lens out of the network of personnel, which is better than the role of the camera on the entrance device, you can better deal with backlight problems.

Q:Network monitoring camera how to change ip

Most of the network camera has matching software, the software can search the camera and can set the camera IP, want to see the video recorder in the external network, then directly to the video recorder port mapping on the line, like the analog video recorder. In the camera factory will have a CD with the machine, the CD has a corresponding camera software which has a search software, through the search software can see the IP address assigned to the camera and re-fill the port suggested that the port fill between 1025-65535 Data, and IP address must be on the same network with the local computer, the first four different instructions have a corresponding diagram.