This color dome is a top of the line day/night networking camera. With 520 TV lines and a 1/3" Sony CCD, you're sure to get a clear, high resolution picture. It has a variety of advanced features including 2-way audio, motion detection and password protection to prevent unauthorized users. This camera is vandal proof and weatherproof and comes with a 3.6-9mm auto iris lens. Features MJPEG and MPEG4 Video Compression Selectable Built-in IR LEDs for Night Vision Integrated Two-way Audio Vandal-proof and Weather-proof (IP66) High Resolution 1/3" SONY CCD Sensor Vari-focal Auto Iris 3.6~9.0mm Lens Removable IR Cut Filter Optimized Synchronization of Audio and Video Intelligent Motion Detection Pre- and Post- Alarm Snapshots Digital I/O for Sensor and Alarm