There are many reasons for the false alarm of the alarm system, some are the quality of the equipment itself, some are the operation problems of the operator, and some are the influence of the natural environment. In summary, there are probably the following:

a. Equipment failures caused by equipment quality problems are usually caused by component damage or poor production processes (such as virtual soldering, etc.). It may also be caused by ambient temperature, component manufacturing process, equipment manufacturing process, use time, Changes in storage time and power load and other factors lead to failures caused by changes in component parameters;

b. False alarms caused by improper equipment selection during system design. For example, the use of vibration detectors close to the seismic source (airports, railways) will easily cause false alarms of the system. Ultrasonic detectors can also be used in places where bats frequent It will cause the system to alarm falsely. This is because the bat emits ultrasonic waves. High-frequency sounds such as electric bells and metal impact sounds can cause false alarms of the glass break detector.

c. False alarms caused by improper installation position and installation angle of detection equipment, for example, when passive infrared intrusion detectors are installed against air conditioners and ventilation fans, they will cause system false alarms;

d. False alarms caused by environmental noise, such as false alarms of passive infrared intrusion detectors caused by hot air flow, false alarms of glass break detectors caused by high-frequency sound, and intrusion alarms caused by small animals intruding.