Rev. 2 - 10/05
Copyright© 2003-2005, Alpha Communications®, All Rights Reserved
42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • Email: email@example.com
ARCHITECTS' AND ENGINEERS'
The handset(s) shall be Alpha Communications®/
Ring model GD591 or approved equivalent, and shall
be used in conjunction with the AA903 master inter-
com station(s). Handset(s) shall be K-style, and fea-
ture a standard 4-conductor coiled cord with modular
connectors. Handset(s) shall be Black plastic and shall
be surface mount type, requiring no backbox for
Handset(s) shall be used with the RM5000 or CB901
series microprocessor intercom systems.
Contractor shall observe all local and national electri-
cal and building codes.
Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice.
GD591 Handset for
AA903 Master Station
The GD591 Handset is designed to be used in
conjunction with the AA903 master intercom sta-
tion, and RM5000 or CB901 intercom systems.
The spiral cord for the K-style handset is a standard
4-wire type with modular connectors. A magnetic
operated hook-switch design is used. The GD591
handset is designed for surface wall mounting and a
backbox is not needed.
When the handset is in the cradle, the master station
is in hands-free mode, using the microphone and
speaker on the master station.
When the handset is lifted during a call, the speaker/
microphone on the master station is disconnected
and the handset is used for confidential conversa-
When the handset is placed back on the cradle, the
call is automatically cancelled.
• Simple wiring
• For indoor use
• Surface Mount - no backbox needed
• Simple to install