Q:An accurate calculation formula for monitoring the focal length and actual distance of the lens

So when you need to monitor the panorama to see the local, the general should consider the use of electric two variable or electric three variable lens. Of course, in the selected lens under the premise of the use of high-resolution cameras and monitors can be monitored objects in the smaller size can also see the local details.

Q:Monitor the top ten cameras

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Q:How to monitor the camera with the venue, what type of camera installed in what kind of site, the camera installed how much the number of lenses should be equipped with light board.

Monitoring camera should pay attention to the following: camera clarity, illumination, image storage time, etc., it is recommended to monitor the equipment franchise stores (generally every city computer city) asked clear.

Q:How to use the network cable to connect the surveillance camera?

1, the use of two of the network cable transmission video. If the camera is a direct video output, usually with a dedicated video cable video, but also useful cable transmission video (only two of them), often in order to save costs.

Q:How to clean the surveillance camera

Finally, wipe the lens with deerskin clean.

Q:What is the maximum visual range of a video surveillance camera?

Visual range with the camera lens: General: 4mm angle of exposure of 70 degrees, about 6 meters away

Q:Hai Kangwei depending on the surveillance camera how to achieve continuous automatic capture, such as a second catch a?

If you want to install ten cameras then the traditional camera is necessary for each coaxial line must be inserted at the same time a video recorder can be used normally, but the network camera can add a switch, that has ten network switches into only need Through a network cable to pull another switch on the normal use, so do not have to spend a lot of trouble, save a lot of labor)

Q:Digital surveillance camera how to increase? Each head of the ip are 192.168.1.10 now have ten cameras. Ask how to do?

Modify the last two digits of each camera is like a 192.168.1.11,192.168.1.12, ...

Q:Monitor the camera from the appearance of how to distinguish is not infrared

Many users in the purchase of infrared surveillance cameras will encounter how to distinguish between the infrared function of this problem. Here, we provide a way for everyone, hoping to help you solve this problem.

Q:Monitor the camera has a video port, what is this mouth, then what machine, direct access to the TV can you?

If you want to video directly to the hard disk recorders, take a video line, the two do a BNC head (the electronics market to sell more), one end of the camera, one end of the hard disk recorders, hard disk recorders then TV or LCD Is a small set of video surveillance system.