Image sensor: 1/4-inch Sony super HAD CCD Min luminous: 1.0 lux (color), 0.2 lux (black, DSS) Focus: 16x optical zoom, 8x digital zoom BLC: super BLC Size: 7-inch alloy case Video compression: H.264 baseline profile at level 2.2 Video parameters: brightness, hue, contrast, saturation, and image quality Streaming format: optional video streaming or audio and video composite streaming Video output: one channel composite streaming Audio input: 1 channel, linear input Input impedance: 1KΩ Audio output: 1 channel, RCA interface, and linear output Audio talk-back: 1 channel, mic input Alarm input: 1 channel on/off input, supporting NO (normally open) or NC (normally close) sense Input power supply: 12V DC, 2A Maximum power: less than 20W Operating temperature: -10 to 55 degrees Storage temperature: -20 to 70 degrees Operating humidity: 10 to 85% Operating system: Microsoft Windows 98/Me/2000/XP/2003 Browser: Microsoft Internet Explorer 5.x or above