PSU-101 Power Supply for the IMF-3. (Does not
power the Party Lines attached to CCI-22 modules. These require Encore Master
Station PSUs such as the PK-7, PS-702 or MS-702). The PSU-101 is the power
supply for the IMF-3 interface frame. It has both an audible failure alarm and
failure relay contacts to activate a remote signal. A single PSU-101 will power
a minimum of two interface frames, depending on the type of interfaces and their
individual power requirements.