Product Specification Sheet A PS297 - Rev. 07/2013
6941 and 6942 Power Supply Units (DigiBUS Series)
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
TOLL-FREE: (800) 666-4800 • Web: AlphaCommunications.com • Email: info@alphacommunications.com
Copyright© 1998-201 4 Alpha Communications® - All Rights Reserved.
Elvox is a registered trademark of Paso Soun d Product s Inc.
Digi-Bus i s a registered trademark of Paso Sou nd Produc ts Inc.
Due to co ntinuous pro duct improvement, all colo rs, sizes, materials, finishes and specification s are subject to ch ange without n otice.
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Architects' And Engineers'
Specifications
The main system power supply shall be
Alpha Communications® /Elvox™ 6941, or
approved equal. The system booster power
supply unit(s) shall be Alpha Communications®
/Elvox™ 6942, or approved equal. T he model
6941 shall feat ure built-in diagnostic LEDs for
system operation st atus. All power supplies shall
be surface mount (12-DIN type) housed in
grey thermoplastic material. T hese power
supplies are provided with protective c overs for
removable terminal blocks. Primary power shall
be 120V, 60Hz and units shall feat ure protection
against short- circuits and thermal protection
with PT C; maximum absorbed power 60VA.
Contract or shall install as per
manufacturers instructions and shall observe all
local and national elec trical and building codes.
6941 (200 unit) Main Power Supply
The Alpha Communicat ions® 6941 power supply is used with the (Digi-Bus™) digital-
dial concierge intercom and/ or the digital-dial apartment entry interc om system(s),
for up to the first 200 apartment handset stations (users), 50 digital distributors, 2
entry panels or 1 ent ry panel and 1 switc hboard. Also, one additional unit is required
for approximately every additional 200 handsets (users).The 6941 feat ures stabilized
supply with short- circuit protec tion, frequency-modulated electronic all circuit, c all
exclusion on activation of phonic line, "power-on" indicat or led, "door lock release
control" indicator led, "phonic line" indicator led, indicat or leds for auxiliary functions
1 and 2 and relay connect ion outputs for auxiliary functions. The 6941 mounts on
DIN support or with expanding plugs with screws.
Dimensions:
Height: 5.30" (135mm)
Width: 8.20" (208mm)
Depth: 2.85" (72mm) from mounting surface
6942 (200 unit) Booster Power Supply
The Alpha Communicat ions® 6942 boost er power supply is used with
the Digi-Bus™ digital-dial concierge intercom system(s), for
installations with more t han 200 handset st ations (one unit required
for approximately every 200 users.) Provides a stabilized 13.5V D.C.
voltage output with short c ircuit protec tion. For use in building
complex installations and/or with porter switchboards.
Dimensions: Same as Model 6941 (above).
Features
Operates direct ly from 120VAC, 60Hz current
Removable screw terminal bloc ks
LEDS indicating operation st atus
Protec ts against short- circuits and thermal protec tion with PTC