User guide
3. Installation
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Fitting a Plug-by Communicator
The 9651 can be fitted with a communicator or speech dialler, for example the
Scantronic 660, 8400, and 8440 digital communicators or the SD1 or SD2
Speech diallers. To fit a communicator inside the control unit, follow the
instructions below. To connect an SD1 or SD2 follow the instructions provided
with those products.
Caution: Follow the instructions in the order shown, or you may damage
the control unit and/or communicator.
1. Disconnect mains and battery power from the control unit and remove
the case lid, if the system has already been installed.
2. Detach the main PCB from the support pillars in the control unit case,
and lift the PCB carefully to the left.
3. Fit the communicator between the PCB support pillars, making sure that
the main PCB can fit back into position (see Figure 13).
Figure 13. . Fitting a Plug By Communicator in a Junior Combi Box.
4. Make any necessary connections from the communicator to the Comms
Wiring Harness. Figure 14 shows the outputs available on the free ends
of the Comms Wiring Harness.










