1. The GSM alarm system supporting every CCD/CMOS camera in the market, compatibility with NTSC/PAL ... every CCD/CMOS camera in the market, compatibility with NTSC/PAL mode3.Supporting two camera input and ... .Images, photos, data storage cycle, "the first in , and the first out automatic coverage.9.Power- ... down, kept in-house DVR or SD memory card images are not lost. GSM DVR Intelligent Alarm System