AVTECH ΑΚ-683 All in one DVR HARDWARE MPEG4 H.264 Technology 4 x Input Ports BNC, TFT Monitor 19", Display rate Real time, 100 fps, intelligent motion detection, SATA interface, 4 x Sensor input, 4 x Alarm output, RS485 PTZ Control, Network Interface WEB server, audio, VGA out for PC monitor