Specifications

1.4.1: The Main Board

The Main Board is the brain of the system and connects to various peripheral modules

using a number of interface connectors. Additionally, the Main Board includes a

programmable output, a hardwire zone input and a USB port for PC programming.

Figure 1.3: Main Board

1. USB port for connection to PC

2. DIP-switch for flash programming

3. Connector for on-board transmitter

4. Flat-cable interface connector to PSTN module

5. Auxiliary power output (AC Operated:10-15V, Battery Operated: 6-

8V)

6. Programmable relay output (100mA max. load)

7. Hardwire zone (Zone 33)

8. Status LED

9. Interphone module connector

10. Flash programming connector for main board

11. HK855 Hardwire LCD Keypad terminal block

12. Flat-cable interface connector to LCD keypad, built-in speaker,

microphone and siren

13. Front tamper switch

14. Programming keypad connector (optional)

15. Interface connector to Home Automation module

16. AC power terminal block

17. Home Automation module terminal block

18. AC power protection fuse

19. Backup battery protection fuse

20. Flat-cable interface connector to GSM module

21. Backup battery connector

22. Additional backup battery connector