4 Channel Standalone DVR Card PTZ camera control in local and remote area E-mail notification 3G support FEATURES:• Stand-Alone DVR, H.264 Compression ... from 40G to 6T in Total )Video Input4 channel, BNC , 1.0V p-p/75ΩComposite Video ... , Resolution: 800x600/60HZ, 1024x768/60HZAudio Input8 channel, RCAAudio Output1 channel, RCAAlarm Input4 Channel, Trigger closed without Voltage,Open or ClosedAlarm ...