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2. Technical Description
Control Unit PCB
Figure 3 shows the layout of the control unit PCB.
Figure 3. Control Unit PCB Layout
Lid Tamper
switch
Zone
connectors
Keypad and
expander bus
Outputs
Aux power
Kick start pins
Battery
connector
Plug-on communicator
connector
Plug-by communicator
connector
Printer connector
Reset pins
Plug-on communicator
connector
Telephone line
connector
Telephone line
socket
21VAC from mains
transformer
Factory test pins
Local Downloader
connector
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