According to the shape, it can be divided into common type and spherical type. Spherical PTZ is to place the PTZ in a hemispherical and spherical protective cover. In addition to preventing dust from disturbing the image, it is also hidden, beautiful and fast. When selecting PTZ, it is necessary to consider the installation environment, installation mode, working voltage, load size, as well as the performance-price ratio and aesthetic appearance. If the camera only monitors a certain position without rotation, then only the camera bracket can meet the requirements. The common camera bracket is simple to install, cheap and various.