The MMSP is either installed between the sounder circuit outputs of the Fire Alarm Control
Panel (FACP) and the sounder circuits to the field. (See Figure 2)
Diagram of FACP – MMSP – Sounder Circuits
or between the loop interface (S/C) and the sounder circuits to the field. (See Figure 2)
In each of these cases the last device on the sounder circuit should contain an EOL to match
the FACP being used. The MMSP in its quiescent state is ‘invisible’ to the FACP and will
monitor the devices on the sounder circuit in its normal manner.
Zone Extension PCB (Part Ref. ZEP)
A zone extension PCB is also available to seamlessly add
an additional 3 zones. Each zone has two sounder circuits
rated at 2A each. With the MMSP this provides up to 4
zones or 8 sounder circuits with a total load of 16A.
Each ZEP has LED indicators for test and troubleshooting.
When the ZEP is attached to the MMSP, all messages,
whether fire or auxiliary, are synchronised. If a zone goes
to ‘Fire’ it will change its message immediately, or at the
