What factor should be considered when installing exterior photoelectric beams?

When installing exterior photoelectric beams, sunlight is a critical factor to consider. These devices rely on light to detect movement or changes in their environment, and excessive direct sunlight can cause false alarms or interfere with their sensitivity. Proper placement and orientation of photoelectric beams are essential to minimize such interference from sunlight while ensuring optimal performance. This consideration helps maintain the effectiveness of the security system by ensuring that the beams are only triggered by intended objects or movements, not by natural light fluctuations throughout the day.

Other factors, such as rainfall, temperature fluctuations, and humidity levels, can be important in certain contexts but do not directly affect the fundamental operation of photoelectric beams in the same way that sunlight does.