... DVR CCTV 1)standalone DVR 2)4CH Video, Audio, Alarm input 3)Excellent performance 4)CE & FCC Popular H.264 ... RCA audio input, 4CH alarm input*Compression format: Advanced H.264 for saved file and internet transmission*Support VGA port output for ... rate4x25FPS(PAL),4x30FPS(NTSC) Audio input/output8k8bit,AVx4(4CH record)/8k8bit,AVx1 Alarm input / output4CH / Relay output, NO,NC,COM Alarm methodSensor ...