“Mechanical” factor: Due to continuous round-the-clock operation, mechanical elements malfunction: hard drive, cooling fans, lens sharpness goes out (due to auto iris operation).
“Human factor”: Disabling recording and changing other settings of the video server or recorder. Changing the viewing direction of cameras and volumetric sensors. Changing the preset algorithms and other settings of the control panel. “Short-circuiting” the sensors. All this is done intentionally, “foolishly” or due to software failure.
“Electrical” factor: Oxidation of contacts, damage to cables, failure of power supplies or changes in their characteristics, changes in the characteristics of electronic components (resistors and capacitors on unaddressed OPs)
“Dirt” and aesthetic factor: Contamination of optics of video cameras and lenses of volumetric sensors, clogging of grids of smoke sensors, deterioration of appearance of equipment due to dirt and dust.
“Organizational factor”: human psychology is arranged in such a way that we cannot pay constant attention to one issue for a long time. If we don’t do monthly maintenance, we pay less and less attention to the operability of security systems until an emergency happens….
Parkinson’s factor: you can be sure that according to the “law of meanness” malfunctions in the system will occur exactly when it is required to be 100% operational.