Q:Will a 12V10A switching power supply with a few 12V2A surveillance camera? How far can its DC current output? Please have experienced master answer, thank you

Most of the time with seven infrared one machine, the nearest infrared machine 15 meters, farthest infrared one machine 110 meters. Cloth RVV2 * 1.5 power cord

Q:I want to install a set of monitoring, a total of 15 cameras, the farthest camera from the hard disk recorder 500 meters, how to install? What equipment?

Need to install the video capture card and monitor the number of camera cameras to determine the number of acquisition cards (a collection card with four cameras), if the future will increase the camera, you can directly use 8-way card card collection of about 300 yuan, about 200 camera To a few thousand range

Q:Monitor the camera focal length 3.6mm 4mm 6mm. What is the meaning?

Mm is the lens of the aperture, the number of millimeters, not the bigger the better, the smaller the camera according to the wider picture, the larger the picture the more narrow the picture, the large number of millimeters of the lens is equivalent to the local zoom, The need to size, the size of the number of millimeters of the lens price is the same, there is a picture below you look at it to understand

Q:Monitoring camera POE power supply is good, or centralized power supply good?

If you have to use (see profits, you understand), it is recommended to choose some big brands of products, such as Huawei, 3com, etc., the cost is high, 20 meters if the use of oxygen-free copper feet .5 super five twisted pair , The loss on the wire can be ignored, but the use of POE power supply to consider the lightning ah, a break is a big string ah! :) POE to be used to do lightning protection measures Oh. And POE power supply in the event of failure when the investigation than the use of some trouble with the transformer.

Q:Dvr monitor the video recorder without image output is what the problem

If the format is only the system disk, then the system, monitoring software must be reloaded, set; VCR is the embedded host, format only to clear the video data, the system program and settings are stored in the motherboard chip So there is no need to reset it.

Q:Is there a surveillance camera that can be plugged in

Oh, the first kind of camera is generally by the lens, image sensor, analog / digital converter, image control And other parts of the composition, if the audio function, then, coupled with the sound collection, processing and transmission components.

Q:Monitor the image of the camera appeared black and white colorless situation, is this how is it?

First of all, you first look at the monitor is not set to black and white and then in the hard disk video recorder you look at the system is not wrong

Q:Digital camera and analog camera difference

1, analog camera: it belongs to the front-end video capture device, analog camera output is the analog video signal, through the encoder can be video capture equipment to produce analog video signals into digital signals, and then stored in the computer. The video signal captured by the analog camera must be converted to digital mode via a specific video capture card and compressed before it can be converted to a computer.

Q:Monitor the camera's focal length 4 meters good or 8 meters good

General surveillance camera focal length is not 4 meters 8 meters, and some words are estimated that the focal length of the telescope. I think you focus on the unit you did not understand, monitor the camera focal length of 2.4,4,6,8,10 ... and so on

Q:Monitor camera lens 4-6-8-12-16MM difference.

4 of 3-4 meters wide angle of 45 degrees, 6 of 6-8 meters wide angle of 38 angle, 8 of 8-12 meters wide angle of 35 degrees, 12 of 12-15 meters wide angle of 30 degrees, 16 of 20 meters / wide angle 27-28 degrees,