Rev. 2 - 03/03
ARCHITECTS' AND ENGINEERS'
The intercom system shall be Alpha Communications®/ Elvox™
142A series, or approved equal. At the master location contractor
shall furnish and install one (1) model 142x (x=A thru Z depending
upon number of lamps in multiples of 10 up to 60 stations or
multiples of 20 for larger masters) switchboard station. Master
station shall have built-in system amplifier, lamp annunciators,
call-down signal, momentary call-up push-button, and privacy
handset. All 142 masters shall be sequentially numbered at the
factory. At each remote location contractor shall furnish and
install one model HT3009/2W white handset (or model HT3009/
2A or model 8870 or model 902).
Wiring to remote handsets shall be #22AWG (up to 2,000 feet)
with 1-common and 1-selective wire per remote handset location.
Contractor shall furnish and install one (1) model 836 power
supply. Contractor shall observe all local and national electrical
and building codes and shall wire system as per manufacturer.
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142A Series Annunciator
The Alpha Communications®/Elvox™ 142A series intercom
system is an internal intercom switchboard system that can be used
in Luxury Apartment Buildings, Dormitories, Health Care Facili-
ties, Elevators, Hotels, Motels, Schools, Offices, Bowling Alleys
and Supermarkets. The 142A series is an advanced system, with
individual lamp annunciation, conversation privacy, and large
remote handset capacity. Models above 60 stations incorporate a
'station multiplier' feature, that allows the amount of station
selector switches to be reduced by half. This feature greatly