The anti-theft alarm system uses physical methods or electronic technology to automatically detect the intrusion that occurs in the deployment monitoring area, generate an alarm signal, and prompt the on-duty personnel to place an alarm in the area where the countermeasures may be taken.
There are mainly several reasons for false positives and false negatives in the alarm system. The wireless detector's anti-jamming capability shows that the same-frequency interference is likely to cause false positives and false negatives. Infrared detectors are inaccurate in judgment of intrusion behavior and cause false reports. Infrared detectors are susceptible to false alarms due to environmental factors such as temperature and light. The power supply system of the wireless detector lacks power. When the power is low, there is no effective information transmission so that the detection distance of the detector becomes shorter or it does not work, resulting in missed false alarms. Because the host and the detector are all set by wireless encoding, there is repetition and the host and detector re-encoding result in false alarms.