Rev. 1 - 09/03
Copyright© 2003, Alpha Communications®, All Rights Reserved
442 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: firstname.lastname@example.org
Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice.
BRA Controller Board
for Digital-Dial System
The Alpha Communications®/S.T.R.™ BRA digital-
dial controller boards are used with our BRK16 16-
station relay card(s), DB1 series LCD display(s), and
EMDB1 (or EMVDB1) series keypad module(s) to
provide digital-dialling capabilities to a variety of inter-
com or video-intercom systems.
Up to 239 apartment intercom and/or video-intercom
stations can be signaled by using the BRA in conjunc-
tion with up to 15 BRK16 units.
Each BRK16 used with the BRA controller provides up
to 16 time-delayed dry contact (normally open) relay
closures to activate the apt. station's call signal. This
makes the BRA and BRK16 combination a nearly
universal digital-dialling solution.
The BRA multi-entrance adaptors are designed to
easily surface mount right onto the finished wall by
means of customer supplied screws or the convenient
plastic 'Din Rail' bracket supplied with each power
supply. Connections are positive screw terminal type.
Can be used to activate up to 15- BRK16 relay cards
• Operates on Safe Low-Voltage Class II Wiring
• Convenient Plastic 'Din Rail' Mounting Bracket
Positive Screw Terminal Connectors
Height: 3.75" (96mm)
Width: 4.25" (108mm)
2.375" (61mm) from mounting
Rugged ABS plastic casing.
Positive Screw Terminal Connectors.
ARCHITECTS' AND ENGINEERS'
The digital-dial controller board(s) shall be Alpha
Communications®/S.T.R.™ model BRA, or ap-
proved equal. Unit(s) shall provide the control,
power and logic circuits