Alarm system with code (keyboard 3x4)

Alarm system for home use.
Based on a PIC16F628 micro controller.
3 zones: 
- Zone 1 - delay /door/
- Zone 2 - immediate /PIR sensor/
- TMP Zone - 24-hour internal security of the system itself.

Two 4-digit access codes: 
- USER - ON/OFF position of the system
- ENG. (ADMIN) - for programming 
Changeable input, output and alarm signal time, resetting user and engineering codes.
Entry time: 5, 10 and 20 sec. 
Leave time: 10, 20 and 30 sec. 
Alarm signal time: 30, 60 and 120 sec.
Mode /Ringer/ - when zone 1 one is activated /door open/ a sound signal will alarm
-Sound and light alert.
-Keyboard12 buttons.