Specifications: Model : IL 6004HDS / IL 6008HDS / IL 6016HDS Video Input : 4 channels / 8 channels / 16 channels Audio Input : 4 channels / 8 channels / 16 channels Alarm Input : 4 channels / 8 channels / 16 channels Alarm Output : 4 channels / 4 channels / 4 channels Video Output : 1 channel BNC, 1 VGA Audio Output : 1 channel BNC Compression : H.264 (Hardware support) Picture Resolution :PAL: 704x576(D1), NTSC:704x480(D1) Playback Resolution : PAL: every channel 25FPS@D1, NTSC: every channel 30FPS@D1 Frame Rate Range : PAL: 1/16 to 25 fps, NTSC: 1/16 to 30 fps Bit Rate Range : 32Kbps to 2Mbps, self-define Stream Type : Video & Audio / Video Dual-stream ; Yes Communication Interface :1 RJ45 (10M/100M), 1 RJ45(RS232) HDD Interface: 8 SATA USB interface : 1 USB Power Supply : 100-240 VAC/6.3A Operation Temperature : -10¡ãC ~ 40¡ãC Operation Humidity : 10% ~ 90% Dimension : 19" 2U standard Weight : 8 kg (without HDD)