WHAT DOES CCTV MEAN?

主条目：中央电视台彩色电视中心、中央電視台總部大樓和中央电视台电视文化中心Stand-by itself cameras are wi-fi security cameras that don’t connect to NVR (or DVR) recorders. Instead, they help save footage directly to the cloud, or occasionally on the MicroSD card. You can entry your footage anytime throughout th