SchematicDiagram(X2C4000BVP)Items Descriptions① Front cover Helps protect the IPC from sunlight and rain.② Rear cover Fixed with the front cover.③Focusing lever Adjust the focal length of the IPC.④Lens Lens of IPC⑤ Infrared IR’s Infrared IR’s behind glass cover⑥ Ball and sleeve Rotatable, used to adjust the angle of view of the IPC.⑦Base Base to be secured against wall.⑧ Fixing hole Screw holes to secure IPC to wall.