In 2018, the Ministry of Education issued an urgent notice to prevent primary and secondary school students from addicting to online education, including regulating students' use of mobile phones. After the comparison of various preventive measures, the school found that only by installing a security door to check whether the students have mobile phones every day is a direct and effective way to help students quit "mobile addiction". As the students said, with the mobile phone, it will inevitably affect the attention of the class, affect learning. After the "security check" measures are taken, the students are isolated from the mobile phones, and there is no condition to "peek" the mobile phones, so they can have classes and study at ease. Some people say that students' self-control ability is limited, which helps students self-control.
LED display is built in the left and right sides of the door panel to accurately display the contraband hidden in the corresponding height of the human body. The alarm location can be directly displayed on the four sides of the door post through the column lamp.
Sensitivity adjustability: 12 overlapping detection areas have a 1000 level sensitivity adjustment program, which can preset the possible parts of metal articles according to the use conditions, alarm at multiple locations at the same time, and accurately judge metal articles
The sensitivity can detect the metal with the size of paper clip. The sensitivity can be adjusted between 0-1000, and the possible parts, volume, weight and size of metal articles can be set in advance to adjust the sensitivity properly, so as to eliminate the false alarm of belt buckle, key, jewelry, coin and other articles.
Two sets of door-to-door automatic frequency setting work side by side. Each door has automatic frequency setting function when starting up. Each door can set different frequencies to avoid mutual interference.