Main features: Processor: built-in 32-bit RISC processor Operation system: built-in Linux Built-in Sony HQ1 CCD sensor Supports POE function Supports SD card Resolution: 520TVL Specifications: Compression: H264, PAL/NTSC for option Resolution: QCIF, CIF, 2CIF, DCIF, 4CIF and frames for option Transmission rate: 32k to 8Mbps Excellent dynamination for code technology: dual-stream technology, frame rate, picture quality, speed up network transmission Supports multi-area network, sensitive motion detection, time, triggering, message alarm (for option) MP3 compression, bi-directional language, watermark technology Supports local video record (via Microsoft Media Player directly) Private mask function Supports snapshot Supports POE function Supports SD card