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Description:1) Video Input: PAL/NTSC 8 BNC port,1V p-p,75ohm 2) Video Output: PAL/NTSC 1 BNC port, 1 VGA output; 1V p-p, 75ohm. 3) Recording Rate:PAL 11f/ch/s 625TVL; NTSC:13f/ch/s,525TVL 4) Audio Input: 8 Channel 5) I/O Connector: RS485, Alarm input and output 6) Power supply: 220V/230V,110V/120V 7) Working temperature: -10 to 55°C 8) Dimensions (L *W * H): 439 *173*452mm 9) Weight: 8kg