Home Camera Surveillance System
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Home Camera Surveillance System Supplier & Manufacturer from China
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Outdoor surveillance camera what brand good ah
- Outdoor surveillance camera to meet their actual needs, the quality of trust, is the right of their own. Do not blindly pursue the brand.s
The working principle of the camera with infrared light
- Infrared emission diode (IR LED) infrared lamp principle is: by the infrared light-emitting diode matrix composed of light. Infrared emission diode from the infrared radiation efficiency of high materials (commonly used gallium arsenide GaAs) made PN junction, plus forward bias voltage to the PN junction injection current excitation infrared light. Spectral power distribution for the central wavelength of 830 ~ 950nm, half-peak bandwidth of about 40nm or so, it is narrowband distribution, for ordinary CCD black and white camera can feel the range. The emission power of the infrared light emitting diode is expressed by the irradiance μW / m2. The maximum radiation intensity of the infrared diode is generally in front of the optical axis and decreases with the increase of the angle between the radiation direction and the optical axis. The radiation intensity is 50% of the maximum value of the angle is called the half intensity radiation angle, that is, half power angle. The radiation angle of the infrared light emitting diodes of different packaging process models is different.s
Monitor the farthest distance from the camera can be far, which manufacturers out
- Commonly used fixed lens camera lens focal length specifications are 4mm, 6mm, 8mm, 16mm, 25mm, viewing angle were about 80 degrees, 65 degrees, 50 degrees, 30 degrees, 15 degrees, the effective distance of 10 meters, 20 meters, 30 meters, 40 meters, 50 meters.s
Police surveillance camera and civilian What is the difference?
- Police cameras and digital cameras are basically no difference, but for some special occasions, some of the requirements.s
Home surveillance camera with which brand is good?
- This is very small, do not just look at it is not necessarily know it is a monitor it Usually work when the use of mobile phones to monitor the situation at home. If the family into the thief, but also to my mobile phone to send reminders, this time to save the video surveillance or screenshots, you can as evidence.s
Monitor the camera has a video port, what is this mouth, then what machine, direct access to the TV can you?
- You saw the bayonet bulb it, you go to the computer city to buy a plug on it, the output of the video signal, before the old TV also have this video interface.s
I installed a monitoring camera admin user password forgotten! How do you handle
- Dahua: username admin password admins
Monitor host can not find the camera ip how to do?
- And then look at the network are not connected (LAN look at the ping), is not in a network segment (192.168.1.XX or 192.168.0.XX)s
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