7 Inch Constant Speed Dome Camera With the all-weather environment design, can be used indoor or outdoor.ABS plastic,with function of water proof, acid rainproof, thermostable,against cauterization.The Imported PMMA dome cover is good for transitting of light the camera get.Undistorted.Runs steadily and reliably.Embed entire position intelligence Pan/Tilt and the decoder.Multi-Protocol，PTZ control RS485 ,Horizontal Rotation: 360 continuous rotation     Horizontal Shift:     0.5 ° /S-15 ° /S     Vertical Shift:  0 .5 ° /S-15 ° /S     1/4 CCD SONY  420TVL 22X