Traditional Culture Encyclopedia - Photography major - Monitoring installation: Can the monitoring camera be used without an adapter?
Monitoring installation: Can the monitoring camera be used without an adapter?
POE cameras don't need power cables, which can transmit signals for network cables, and at the same time, they can provide DC power supply technology for network devices and power supply for cameras, so POE cameras don't need power adapters. A complete POE system includes two parts: power supply terminal equipment and power receiving terminal equipment.
Extended data infrared hemisphere series machines appear poor illumination, white or bright white aperture at night. This is due to improper assembly of the machine. When assembling, the photosensitive device (photosensitive resistor) is too far away from the hemisphere, which will lead to incomplete starting of infrared lamp and poor lighting of the machine at night.
The phenomenon that the image is white or bright white is mainly caused by the infrared light emitted by the infrared light emitting tube refracting to the lens through the spherical cover. The solution to this phenomenon is to prevent infrared light from refracting to the lens surface. Usually, a sponge ring is used to isolate the lens from infrared light, and the ball cover must be attached to the sponge ring when assembling.
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