Which sensor is preferable when there is light air turbulence and vibrations outside the room?

The acoustic detector is preferable in situations where there is light air turbulence and vibrations outside the room because it is designed to detect sound waves and can be less affected by environmental disturbances such as air movement or vibrations. Acoustic detectors often work by identifying the unique sound signatures of intrusions or other relevant noises, making them suitable for environments with fluctuating conditions that might interfere with other sensor types.

In contrast, vibration detectors are specifically tailored to respond to movement and vibrations. However, in a scenario where there are external vibrations, their effectiveness can be compromised as they might trigger false alarms or fail to detect genuine disturbances.

Microwave motion detectors utilize microwave pulses to detect motion by measuring the reflection of these waves. While they are effective in many conditions, they can also be susceptible to interference from heavy air turbulence or obstacles that might disrupt the radar-like signals they use.

Ultrasonic motion detectors work by emitting high-frequency sound waves and measuring their reflection to detect movement. Similar to microwave detectors, they can struggle with disruptions caused by external vibrations or air movement, leading to potential inaccuracies in their response.

Thus, knowing the characteristics of each type of sensor clarifies why an acoustic detector is the best choice under the given conditions.