32 bit ARM processor, support for 5 channels simultaneous communication(support 5 operators simultaneously operate) Automatically search and install controller Bistable state, swipe card the door normally open, swipe again the door normally close Remote open door,full card to open door,read card inside and outside to open door Running stable monitoring(voltage input,watch dog,operating days) Anti-theft host function,fire protection alarm Limit the number of people inside door and region,limit card uses times Time zone management, access authentication methods setting Repeat read card interval setting function Anti-passback, interlock function Read card inside and outside to open door Video capture/recording With powerful expansibility that con venient to integrate with other devices