Product Specification Sheet APS681

Rev. 07/2013

4781 SimpleBUS2 Open-Voice Intercom Station (Diva Series)

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

The open voice intercom station(s) shall be Alpha Communications® / Comelit SimpleBUS2 model# 4781, or approved equal. Unit(s) shall be mounted surface (or desktop using optional model 4782 adaptor). Unit(s) shall be connected using only two (2) looped 'common' wires (twisted or un-twisted) and shall not require any selective (point) wires or coaxial cabling. Unit(s) shall feature electret condenser microphone for exceptional voice fidelity. Units that include carbon transmitter or other voice technologies shall not be acceptable. Handset shall feature a facelate made of ABS plastic and Aluminum. Unit shall include door release button with LED indication, a "privacy" button and and three (3) auxiliary buttons for optional features. Unit shall feature an adjustable electronic chime signal. Unit shall only protrude from the wall 1.50" inches (39mm). Unit shall have a dry contact input that will aloow connection to an emergency pull cord or other contact device, depending on system configuration. Unit shall mount over the 4784 wall moutning bracket.

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

4781 SimpleBUS2 Open-Voice Intercom Station

The AlphaCommunications®/Comelit 4781 SimpleBUS2 open voice intercom stations are designed to meet virtually any requirement for multi-family intercom, while not requiring any selective (home-run) wiring.

These attractive stations are conveniently surface mounted right on the wall. Units can be changed to desk mount with the addition of an optional model 4782 desk adaptor.

All 4781 SimpleBUS2 stations feature an ABS and Aluminum faceplate, hands-free voice function and call volume adjustment. The 4781 is fitted with 1 door opening push button, 1 speech push button with LED indication, 1 pushbutton for the "privacy" or manual speak/listen function and (3) push buttons for additional functions.

  • No riser coaxial cabling required - uses only 2 looped wires twisted or un-twisted
  • Convenient Half-Duplex Voice Operation
  • Easy Installation (surface or optional desk)
  • Clear Voice Fidelity using Electret Condenser Microphones
  • Rugged and Reliable. Simple to Operate
  • Low profile unit protrudes only 1.50" from wall

Width: 3.75" (96mm)
Height: 10.25" (261mm)
Depth: 1.50" (39mm)

Wall Plate: Model 4784 Allows the station to mount to the finished wall surface. One (1) required for each 4781 station.

Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.