What's the difference between the hemisphere and the world of security surveillance cameras?
Global power, video, and a 485 interface, 485 interface to connect the control line, through software control global 360 rotation, zoom, focus, ball machine due to the upper and lower control and motor work, usually AC24V power supply.
The hemisphere is small in size and can only be manually adjusted by 360 rotations. The camera has only two interfaces, power and video, which generally support DC, 12V, or AC 24V power supplies.
In fact, with the most similar hemisphere in the interior of the bolt, installed on the roof. Global refers to high-speed ball, medium speed ball and so on, that is, you can control the direction of the computer, or keyboard operation, focusing, preset point, cruise, and other functions.
