... NTSC (BNC port, 1VP-P,75ohm)Video output1CH PAL, NTSC A composite video output(BNC port,1VP-P,75ohm)Video port1 ... point per second, 16 bit per sampling pointOperating system: Embedded real-time operating system (RTOS)Hard Disk:4CH Support 1*SATA ... card, CCTV KIT, Wireless surveillance systerm, LCD and Monitor, lens, cctv accessory etc.Company websites www.elpcctv.com 4CH security cctv system ELP- ...