A simple and easy to use circuit that enables you to improve security by controlling access to prohibited areas.The circuit is based on the microproccessor PIC16C54 that provides accuracy and reliability with 1.000.000 different codes and memory back up. Easy programming by the user, with the ability of having one master and six low level access codes.The appliance activates an alarm system after 3 consecutive attempts to input wrong code numbers. V 12-14VDC P.S. 1061 PCB 55x85mm