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.Features Connect digital matrix systems with a host of other communications systems Two sizes of interface frames: 3 RU x 11 interfaces and 1 RU x 2 interfaces Seamless interfacing with telephone, two-way radio, cameras, party-line intercom, IFB systems, other communications systems and control devices Interfaces are compatible with Matrix Plus, MicroMatrix, and other digital intercom systems Specialty panels for transformer isolation, interfacing with IFB receivers, and connections between Matrix Plus II and Matrix Plus 3 systems