Main functions: 1. Using HDD Card storage, Maximum support 1T SATA HDD. 2. Adopt latest h. 264 compression format; support HD video. 3. Support 1-4 or 1-8 channel real -time h. 264 image records, and 1-2 audio record 4. With maximum 6 sensor for input interface, 1 RS485 sensors, and 1 RS232 sensors 5. Small and exquisite, wide temperature range, super anti-vibration, simple installation. 6. ...