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Elevator in the monitor camera lens focal length with the number
- The smaller the number of millimeters, the greater the angle, see the closer .3.6 mm angle of about 75 degrees, the proposed monitoring distance of 5 meters .2.8 mm angle of about 90 degrees, the proposed monitoring distance of 3 meterss
Use home computer camera how to install home monitoring?
- With the home computer + camera, you have to keep driving the computer, which for the computer life will be affected, I suggest to buy a professional surveillance camera, and now is not expensive, our family has installed a power line network camera , Is the NPC monitoring package, this set of monitoring is still very convenient do not need to pull the cable, through the wire will be able to transmit network signals, including two cameras and a video recorder is only 1 thousand points, not expensive, you can remote monitoring. hope this helps!s
The working principle of the camera with infrared light
- First, the characteristics of infrared and infrared light light is an electromagnetic wave, with the same nature as the radio waves. Its wavelength range is from several nanometers (1nm = 10-9m) to about 1mm (mm). The visible wavelength is from 380nm to 780nm, the wavelength of visible light from long to short into red, orange, yellow, green, blue, blue, violet, the wavelength is shorter than the purple light, the wavelength of visible light is only a part of the visible light, visible light Called ultraviolet light, the wavelength is longer than the infrared light called infrared light. Infrared light wavelength between 780nm ~ 1000μm, located between the radio and visible light. Infrared light according to its infrared radiation mechanism is divided into semiconductor solid light (infrared emission diode IR LED) infrared light and heat radiation infrared light two. At present in the CCTV infrared camera in the former use more.s
Monitor the camera hemispherical gun shape which is good
- Both are different from the installation site, the dome camera is only installed in the indoor site, gun camera can be installed indoors can also be installed outdoors. The dome camera lens due to the installation site is small, it's fixed lens only 3.6 - 8MM three; and gun-type camera it's fixed lens to have a variety of 3.6--16MM, so it's big camera Far more, but according to the angle of the small lens is not wide.s
The monitor camera does not display the image on the display
- First, the camera is broken, two, the information line and plug the connection is not good, three, the camera driver is not installed, the resolution is too high tune.s
I installed a monitoring camera admin user password forgotten! How do you handle
- Hai Kangwei as: user name admin password 12345s
Monitoring camera 6mm 8mm 12mm 16mm length and width can be according to how much.
- 3.6MM10-20 meters 6MM20--35 meters 8MM30--50 meters 12MM40--60 meters 16MM50--70 meters General project is: the target in the display device is greater than or equal to 1/6 of the area, you can see the target.s
HD camera and infrared camera difference
- At present the HD camera refers to the HD 1080P or HD 960P or HD 720P camera, and 1080P called Full HD.s
How much do shopping trolleys cost？
- How much do shopping trolleys cost？---Fashion shopping trolleys. 1, it is stylish and beautiful, it is popular and environmentally friendly, 600D Oxford fabric is strong and dura...
Why are CCTV cameras bad quality
- With the development of society, cctv cameras are used widely. However,we also faced a problem that why are CCTV cameras bad quality. If we want to make CCTV cameras better,we have...
Design case analysis of shopping trolleys australia
- It is well known that，the function of shopping trolleys australia is mainly for people to carry goods when they are shopping in the supermarket.It is convenient to take, and its ...
How to open lockers in middle school？
- In the face of a large number of schools with locker，you probably want to open your locker in the fastest way. Rest assured, Practice makes perfect.The following is the way that ...
How do forklifts work？
- Take the example of the balance heavy forklift,I will introduce the working principle of the forklift: How do forklifts work？Forklift is generally divided into the following seve...