... . 15 inch LCD monitor 3.420TV Line waterproof IR Camera 4.long life span Super Economical Super Economical 4CH ... 2). 4 X 1/4 Color Sharp CCD,420TV Line indoor dome IR Camera(ELP-401VR).IR distance: 20M3 ... audio input(BNC port, 10K¦¸, Vp-p=2.0V LINE)Audio output: 1CH audio output(BNC port, 10K¦¸, ... Vp-p=2.0V LINE)Audio compressionG.722Audio sampling ratio: 8K sampling point per ...