The VIVOTEK IP6117/6127 is a powerful dual-codec wireless network camera supporting 2-way audio. Connected to an Ethernet connection this camera provides remote access to high-quality video and audio. The 2-way audio and upgradeable day/night features make this camera more suitable for many surveillance applications where light conditions change. IP6112/6122 users can easily access synchronized audio and video footage in real-time via internet connection. MJPEG and MPEG-4 Video Compression Selectable Integrated Two-way Audio Optimized Synchronization of Audio and Video 802.11g Wireless Connection Supports UPnP and Dynamic IP (DDNS) Intelligent Motion Detection Pre- and Post- Alarm Snapshots Digital I/O for Sensor and Alarm Free-bundled 16-CH Audio and Video Recording Software Supports Day and Night IR Lens (Optional) Supports Auto Iris Lens (Optional)