BULLET analogic cameras
Outdoor cameras typically have this elongated appearance, and are called type BULLET cameras. To choose a camera must have some basic parameters that are:
Number of lines: It indicates the camera resolution from 500 lines up to 1000 lines, the latter better than other less resolution.
- Optical fixed or variable: The fixed lens 3.6mm and usually does not allow a zoom setting or opening angle of vision. They have a predefined angle vision and can not be adjusted. Optical variable usually 2.8-10mm and allows an adjustment or zoom opening angle at the time of installation to leave focusing a sight or wide-angle view to cover more vision.
- Number of led: The more LEDs have a camera usually indicates that is better able to record in the dark and can reach farther into the darkness. Note that all cameras record the dark in black and white and color light recorded.
- Protection index: The index of protection, in short, is listed as the chamber prepared to withstand the elements. From IP66 can be used outdoors, it would be a better index IP67, IP68 better than the last, etc.
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