What is the approximate no-alarm threshold percentage when utilizing photo beams?

The no-alarm threshold percentage when utilizing photo beams refers to the level at which the system can effectively distinguish between actual alarms and non-threatening disturbances. An approximate threshold of 85 percent reflects a balance between sensitivity and reliability, allowing the system to perform accurately in various environmental conditions.

At this threshold, photo beams are calibrated to detect legitimate intrusions without being overly sensitive to harmless movements or changes in the environment, such as animals or foliage. This helps to minimize false alarms, which can lead to unnecessary dispatches and loss of credibility for the alarm system.

While higher percentages may indicate increasing levels of sensitivity, they can also result in a higher rate of false triggers, making 85 percent a practical choice for optimal performance in typical operational scenarios.