Controller is designed specially for all kinds of electric-control system. It is one of the most advanced entrance guard's in modernized cities. The Controller selected the newest CPU, all information can' t be lost when power supply is off. It adopts the latest technology with powerful functions, three ways to open the door: password, read a card adding with password, and card to open the door. It possesses of safety measures such as monitor and alarm on door state, anti-pry alarm, deploy defense, with which users find more safe and convenient to use, which is the ideal choice for use of commercial institution, office building , factory, and residential area etc.