2.4G active RFID adopts active launch mode, the card launches card information once per second, with ultra-low power consumption, a built-in button battery, can be standby for 2 years. The transmitting power from-13 db ~ 7 db, there are three transmission rates, respectively 250 Kbps, 1Mbps, 2Mbps, the active rfid reader can be easily read within 50 meters (can be stable for 80 meters in the air), but also can support up to 500 radio frequency cards at the same time read, the most important is to overcome the human body, metal and other shielding, even hundreds of cardholders in and out still guarantee 100% reading.2.4G active RFID Tag automatic identification technology in the school related application system is widely welcomed, each student carry a 2.4G active RFID Tag to the school gate, two reader near the school will read the card and pass the information to the data center server, processed by the server after discrimination to send a text message, such as "dad, I have peace to school" "dad, I go home from school, a while", at the same time save all the students in and out of the server information, and put it into reports for school, parents query. Using the school interactive network platform, the head teacher can send each student's school study and life conditions to the parents' mobile phone and email addresses at regular or irregular times or separately.