With the mechanical portion of the project out of the way, he spent a great deal of time working on the door’s electronic components, including the PIC-based controller and capacitive keypad.

Stainless-steel face, durable and attractive. Auto or manual code entry checking. Door forced open warning. Alarm output - When used with an optional magnetic contact. Keypad active output --- ...

The Standalone KeyPad Escutcheon is ideal for securing any door or site where a full access control system ... It supports up to 100 different 4- to 6-number PINs, and has an audible buzzer to confirm ...