... 4.IR Distance : 20 WIFI Indoor IR Led MINI Speed Dome IP Camera,H.264,Dual stream,2-way audio,480 tvl 1 ... 6.0 or higher version,firefox,chrome,safriSuper Client1,4,9,16,25,36, 64,81-channel , no user limited , centralized ... White Balance,Auto Exposure,Automatic GainZoomObtical zoom × 10 . f=3.9-39.0mmVideoCompression FormatH.264 main profile level 3,Dual StreamSignal ...