Video Input: 16 Channels Video Output: 16 Channels Audio Input: 16 Channels Audio Output: 4 Channels Recording Rate: 480 fps ( NTSC) , 400 fps ( PAL) Display Rate: 480 fps ( NTSC) , 400 fps ( PAL) Video Resolution: CIF: 352* 288( PAL) , 352* 240( NTSC) QCIF: 176* 144( PAL) , 176* 120( NTSC) Compression Format: H.264 Compression Type: Hardware Compression Chipset: Ti Operation System: Win98/ 2000/ XP/ Linux Software Language: English , Simple Chinese, Old Chinese NetWork Type: Client, IE browse, PTZ function Remote Type: IE/ Client Backup Type: TV Out: No Single System Support: 4 PCS Card Dimensions: 210* 108 MM