1. camera middle speed dome PTZ 2. subwoofer noise 3. 64 presets, Patrol tracking, auto level scan 4. IP66 all day protection Keyfeatures:1) Double layer of Die-cast Aluminum sell install easily and quickly, can dissipate heat more sufficiently. Black inner shell makes sharper monitor2) Be compatible with common cassette mechanism of camera, like SONY, HITACHI, LG and other famous brands with ...