Burglary and robbery can occur at any time and in any country. It not only seriously endangers people’s property and life safety, but also is a difficult social security problem to completely solve.

With the development of science and technology, many intelligent security burglar alarms have emerged in the market, providing favorable conditions for security prevention and rapid case solving. Due to the widespread use of human pyroelectric, microwave, and door contact as detectors, alarm signals can be obtained from their unique properties of small changes in physical quantities. However, certain blind spots, changes in the external natural environment, and the inherent limitations of certain physical properties of detectors can all pose hidden dangers of false alarms or missed alarms. The following 7 factors can affect home security burglar alarms.

1. Detectors installed on doors and windows may be subject to human interference or damage, causing them to lose their protective capabilities.
2. High frequency emitting electronic products, installed in living rooms and living spaces, are susceptible to interference from the magnetic fields of large household appliances, thereby affecting the prevention effect.
3. Pyroelectric sensors may generate false alarms for nearby high heat, strong light, and hot air currents. When the relative temperature of the environment is close to the human body temperature, false alarms may occur. And they are not very sensitive to moving human bodies obstructed by glass or boards. Microwave detectors use Doppler frequency shift characteristics to monitor moving objects within the defense zone. Anyone entering the defense zone will immediately sound an alarm, but animals or moving plants within the defense zone may cause false alarms. Microwaves have a penetrating effect on walls and floors, and if installed improperly, the activities of neighboring neighbors may also cause false alarms.
4. It is safer to use door contacts as detectors, as there is no possibility of missed or false alarms, as alarm signals are generated when doors and windows are pushed by external forces during the crime. No criminal behavior will generate an alarm signal, but due to its large size and exposed appearance, it is prone to hidden damage or control of anti-alarm behavior. If an acquaintance commits a crime, such incidents are more likely to occur.
5. Nowadays, dual detectors have been launched in the market, which combine human body pyroelectric infrared detection and microwave detection into the same detector. By utilizing the performance of microwave unobstructed and insensitive to smoke, light, and temperature changes, it supplements the shortcomings of human body pyroelectric infrared detectors. Through the composite detection of the two units, false alarms can be basically eliminated. However, this may result in neglecting one aspect, as human infrared radiation is easily blocked by walls, furniture, boards, glass, and other materials. The dual detector requires both units to detect intrusion into the human body simultaneously before triggering an alarm. If a thief with anti-alarm experience enters the defense zone under the cover of glass and board, the dual detector will only have a single detector function and it will be difficult to trigger an alarm, causing the dual detector to lose its proper function.
6. Because currently burglar alarm detectors are almost always installed obviously, the installation program and form not only inevitably provide targets for criminals to destroy, but also create conditions for thieves to destroy home security burglar alarms. When manufacturers are researching and developing highly intelligent home security burglar alarms with no missed or false alarms, they may have a preconception that the detector is indoors and will be recorded or triggered before the outdoor thief can successfully destroy it, ignoring the diversity of crime methods, such as staggered time and space, step-by-step to commit crimes, using technology devices to commit crimes, chiseling holes for taking off magnetic, destroy alarms, and using blind spots to commit crimes. To eliminate the blind spot of the home security burglar alarms that has never been involved before, it is necessary to reduce the size of household alarm detectors, install them all in a concealed manner, and not leave targets for criminals to destroy or create destroying alarm conditions.
7. Some intelligent home security burglar alarms are difficult to operate. People with weak awareness of theft and robbery prevention may not use it. And some middle-aged and elderly people are not even clear about the functions of the keys on the keypad and how to program them. They are even more powerless in the recording, programming, arming, disarming, and quick handling of intelligent home security burglar alarms after an alarm occurs.