Mainly describesConnection MethodWireless,Kit ConfigurationOne to One video doorphone,Additional featuresRecording,Photographed,Outdoor UnitResolution700TVLine,Lens (mm)3.6,Viewing Angle (°)92,IR Distance(m)100,MaterialPlastic,Outdoor Unit dimension(mm)160*100*45,Outdoor Unit weight(g)1000,Indoor UnitDisplay Screen Size (inch)7,Resolution(Pixel) 800*480,Frequency Response:50HZ,Operating Voltage(v)..