用于摄像机云台控制的类库，支持Pelco P和D协议，可以方便开发人员扩展。-For the camera pan and tilt control, libraries, support Pelco P and D protocol, developers can easily expand.

Pelco P/D协议，自带协议选择、上下左右摆动、预置位等功能-Pelco P/D protocol, comes with protocol selection, swing up and down, preset function