Product Specification Sheet APS539

Rev. 07/2013

945B 8-Digit DigiBus Digital-Dial Switchboard Station

Architects' And Engineers' Specifications

At each master switchboard location, contractor shall furnish and install one Alpha Communications® /  Elvox model 945B (8-digit) DigiBus™ Master Switchboard station, or approved equal, and associated (6941, 69426948) power supplies. Master station shall be desk mount type, molded Black ABS plastic, and shall have LCD display, door release button/switch, Day/Night operation switch, call transfer, call conference, call memory scroll and privacy handset. At each remote location, contractor shall furnish and install one (1) model 6204 (or equivalent) handset (with or without the optional video monitor station). Each handset shall include its own unique 8-digit coding and decoding microcontroller. Handsets shall be Soft White color and shall mount right to wall or standard single gang electrical 'gem' box. Wiring to handset shall be 4-common wires (looped) per handset. Each remote handset shall have two (2) auxiliary alarm inputs, which upon momentary 'dry' contact activation, shall send an alarm signal to the model 945B master (concierge) station. 

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

945B (8-Digit) DigiBus™ Desktop Master Switchboard

The Alpha Communications® / Elvox 945B is a Master Switchboard for the 8-Digit DigiBus™ system. It can be used in Luxury Apartment Buildings, Assisted Living Facilities, Dormitories, Health Care Facilities, Hotels, Motels, Schools, Offices, Bowling Alleys and Supermarkets. The 945B provides conversation with remote handset stations as well as door entry station(s). LCD readout annunciates both incoming and outgoing calls, F1 and F2 emergency/alarm signals by apt. code. Call signalling is by pleasant electronic tone. The 945B also has provisions for Day/Night operation with part time doorman/concierge/ guard by switching conversation to entry station(s). This station is ideal for large building units because many installation problems have been solved by eliminating the use of switching modules, and its large capacity of 99,999,999 remote handsets.

  • Easy 4-Wire Intercom Hookup to Audio Handsets (looped)
  • Private Conversation from Handset to Switchboard
  • Up to 99,999,999 Remote Handsets on one system
  • Compact Size 945B Master Switchboard Conveniently mounts right on Desk-Top
  • Multiple Entry Panel Capability and Switching
  • Up to two (2) 945B Masters per system
System Components
Switchboard: Model 945B. Switchboard with LCD display, door release button/switch, Day/Night operation switch, Call transfer, call conference, call memory scroll and privacy handset. Dimensions 12.25"W (310mm) x 9.25"D (235mm) x 4.75"H (120mm).

Power Supplies: Model 6941. Use for up to 200 remote handsets with decoder, 50 digital distributors, 2 entry panels or 1 entry panel and 1 switchboard. Equipped with frequencymodulated electronic call circuit, call exclusion on activation of phonic line, entry panel and handset "power-on" indicator led, "door lock release control" indicator led, "phonic line" indicator led, indicator LEDs for auxiliary functions 1 and 2 and relay connection outputs for auxiliary functions. Dimensions with covers inserted: 8.20"W (208mm) x 5.30"H (135mm) x 2.85"D (72mm). Model 6942 additional power supply. Use for installations with more than 200 remote handsets (one unit required for approx. every 200 additional users). Same dimensions as model 6941.

Alpha Communications
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