1.WDR digital zoom camera; 2.RS-485,digital zoom with OSD 3.1/3 inch High ... .Low Illumination; 4.OSD menu WDR camera,high sensitity ccd,RS-485,digital zoom with OSD ; 1/3 inch High sensitivity ... Communication Control Support–Remote OSD menu control via an RS-485 interface is supported High Performance Menus For Functions–Privacy zone selectable ...