Data Sheet

Product Specification Sheet APS666 - Rev. 11/2013
AA903C Brushed Aluminum Master Station (RM5000EX / CB901EX Series)
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: [phone] • Fax: [phone]
TOLL-FREE: [phone] • Web: AlphaCommunications.com • Email: [e-mail]
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.
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Architects' And Engineers'
Specifications
The master station(s) shall be Alpha
Communications® / Ring model AA903C or
approved equivalent. Master(s) shall have
clear two-way communications. Master(s)
shall feature a 16-button keypad, and
shall require simple home-run wiring.
Master(s) shall be flush or surface wall
mounted using the appropriate
backbox/housing. Master(s) shall be used
with the BBF863 (flush backbox) or
BBS863 (surface back box) or BBD905
(desk backbox). Unit shall be finished in a
brushed aluminum finish.
Master(s) shall be used with the
RM5000EX and/or CB901EX series
microprocessor intercom systems.
Contractor shall observe all local and
national electrical and building codes.
AA903C Flush (or Surface) Mount Master Station
The AA903C is designed for normal use as a flush-mounted unit with back-box model
BBF863. However, the station will also fit into a model BBS863 back-box for surface
mounting, or a model BBD905 for desk mounting.
The unit features a brushed aluminum front plate with speaker and microphone for normal
hands-free speech with a range of approximately 3-5 meters or 10-15 feet. Its keyboard
consists of 10 numeric dialing buttons (DTMF), Push-to-Talk button (T), Cancel button (X),
Volume Up/Down buttons, Privacy button (P) and a microphone Mute button (M). A status
LED is used for indicating station-ON and Privacy.
An optional add-on handset connector is included, for use with the optional model GD501
privacy handset.
The station permits the connection of a parallel speaker where additional output is required
(loudspeaker impedance 50 ohms recommended). The station is designed to work with the
RM5000EX and/or CB901EX series microprocessor intercom systems.
Features
Clear two-way communications
Total privacy with warning tone
Discreet call mode
Ringing tone / Voice insert
Microphone cut-out / Conference
Remote control circuits (doorlocks, bells etc.)
Automatic busy call-back
Hurry-up tone
All/Group calls with reply-back
Automatic call redirection
Secretary transfer
Group hunting / Priority
Speed dialing
Status LED
Specifications
Color: Brush Aluminum face plate
Dimensions:
Width: 5.25" (134mm)
Height: 9.50" (242mm)
Flush Depth: 1.60" (40mm)
Operating Voltage: 20-27VDC
Power Consumption: approx. 150 mA max.
Frequency Range: 300 - 5000 Hz
Galvanic Line: 0 dB (1 mW/600 ohm)
Speech level: max + 4dBm
DTMF Signaling: -10 dBm
Flush Backbox: BBF863
Surface Backbox BBS863
Desk Backbox BBD905