MINI Speed Dome IP Camera, 1.H.264,Dual stream,480 tvl SONY CCD 2. two way audio, 3 ... .10 x optical zoom 4.IR Distance : 20 WIFI Indoor IR Led MINI Speed Dome IP Camera ... ,H.264,Dual stream,2-way audio,480 tvl 1/4 SONY CCD ... ,like demo.gocam.soCollectionImage sensor1/4inch SONY CCD 480tvlSNR>48dBMinimum Illumination0.05LUX3AAuto White Balance,Auto Exposure ...