Q:What are the problems with the surveillance camera?

Monitoring the failure of the camera performance for several aspects: ① power supply is not correct equipment failure. ② equipment line connection reasons. ③ the quality of the equipment or components themselves. If it is installed problems caused by the problem, you can solve, but if it is to monitor the camera's own reasons, it would return to the factory maintenance. Now many manufacturers have done a good job after-sales service, such as Hai Kang, Dahua, Zhong Ying Xin and so on.

Q:20 meters away with the number of mm monitor camera lens appropriate?

According to the imaging principle, the smaller the focal length, the wider the field of view, but the distance is not clear. The larger the focal length, the narrower the field of view, but the longer the distance will be clearer.

Q:Monitor the video recorder has been unable to work what is the reason

VCR hardware is damaged. This situation is recommended to contact the dealer for the repair.

Q:Police surveillance camera and civilian What is the difference?

Such as prisons, interrogation rooms, etc., need to use the explosion-proof damage to the camera, the police need to use the car head (plus lift rod), due to the increase in functionality, the cost will be relative to the increase, these are civilian do not need.

Q:Monitor the camera 1 road 4 what is the difference

Very simple This is for the camera's hard disk video recorder to the general are at least 4 Road 8 Road 16 Road 32 Road, a camera all the way, there are 16 points can be connected to 16 points is 16 cameras.

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:Video surveillance camera pixel 1080P what it means

1080P is a video display format developed by the American Society of Film and Television Engineers (SMPTE).

Q:Monitor how much power the camera has

The general camera is 5W (with infrared)

Q:Camera gun 4MM, 6MM refers to what?

Monitor the camera said 4mm, 6mm is the size of the camera to monitor the camera, the smaller the number of mm mm, the larger the area of the monitor, the wider the angle, but the distance is not far, mm the greater the number of monitoring the farther away , But the monitoring of the angle will be a lot smaller, the specific parameters can refer to the following table, I was monitoring camera manufacturers, if you need a camera can contact me, the user name is my phone, hope my answer can make you satisfied, If you still do not understand the phone can be consulted

Q:What does it mean to monitor the camera channel?

Such as: ordinary hard disk video recorders support 16 video signals, so that the back of the hard disk video recorder has 16 video input interface, the channel refers to the physical location of these video interfaces, generally from left to right sort.