Product Specification Sheet APS678

Rev. 07/2013

4888CU Mixer Power Supply for SimpleBUS (100 unit capacity)

This Specsheet is for a product which is discontinued. Please contact us for alternative products.
Architects' And Engineers' Specifications

The Mixer Power Supply unit(s) shall be Alpha Communications® / Comelit SimpleBUS2 model 4888CU, or approved equal. The 4888CU shall be built into a rugged high impact ABS plastic case, and shall be powered standard 120VAC power. Contractor shall furnish the proper number of 4888CU units, depending upon system capacity.

Low voltage wiring shall be used and positive screw terminal connectors shall be provided for installation wiring. The 4888CU shall be mountable right to the surface of the wall or in a customer-supplied junction box cabinet.

Contractor shall observe all local and national electrical and building codes.

4888CU (100 Unit) SimpleBUS2 Mixer Power Supply

The Alpha Communications®/Comelit 4888CU Mixer Power Supply is used only with the SimpleBUS2 series intercom and/or video-intercom systems. The 4888CU provides the intelligent 'BUS' circuitry needed to control the SimpleBUS2 system functions, for up to 100 resident stations (either intercom only or with video or intermixed). 

Each 4888CU gets its power from a standard 120VAC electrical outlet and customer provided power cord. All 4888CU field connections are positive screw terminal type, or plug-in type.

Each 4888CU Mixer Power Supply provides four (4) outputs for up to 25 resident stations per output.


  • Easily Installs Right on Finished Wall Surface or in Optional Junction Box
  • Operates on 120VAC Power
  • Positive Screw Terminal


Height: 5.55" (141mm)
Width: 5.55" (141mm)
Depth: 2.75" (70mm) from mounting surface

High impact Light Grey ABS plastic case
Positive screw terminal and plug-in connectors
Mounting: Surface-mounted (usually installed near the system amplifier/power supply and other system central equipment).
Alpha Communications
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.