Which item is NOT a common cause of motion sensor false alarms?

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Pass the California Alarm Company Operator Exam. Study with flashcards and multiple choice questions, each with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

Which item is NOT a common cause of motion sensor false alarms?

Explanation:
Motion sensor false alarms come from things that move through the sensor’s view or create changing heat patterns. Passive infrared sensors detect warm bodies moving, so pets can easily trigger them, and balloons that drift or flutter can cast changing infrared signatures. Air movement from heater vents can also cause shifting temperatures that look like motion to the sensor. A fax machine is mostly stationary and doesn’t create a moving heat source or rapid temperature change in front of the sensor, so it isn’t a common trigger.

Motion sensor false alarms come from things that move through the sensor’s view or create changing heat patterns. Passive infrared sensors detect warm bodies moving, so pets can easily trigger them, and balloons that drift or flutter can cast changing infrared signatures. Air movement from heater vents can also cause shifting temperatures that look like motion to the sensor. A fax machine is mostly stationary and doesn’t create a moving heat source or rapid temperature change in front of the sensor, so it isn’t a common trigger.

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