
2. Technical Description
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1. Lid tamper connector 10. Telephone line terminals for built-in communicator
2. Zone connectors 11. Local Downloader connector
3. Keypad and expander bus 12. Plug-on communicator connector
4. Outputs 13. Test pins (factory use only)
5. AUX power 14. NVM Reset pins
6. Kick Start pins 15. Connector for printer (947UK-00)
7. Battery connector 16. Plug-on communicator connector
8. 21VAC from transformer 17. Plug-by (standalone) communicator connector
9. Telephone line socket for built-in communicator
Figure 5. 9851 Control Unit PCB Layout
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