ADA 100
®
Emergency Call System
Housing Devices, Inc.
Page
8
Medford, MA 02155
Copyright © 1998
800-392-5200
Control Board
The Control Board is located in the Relay Card Cabinet and provides electronic support for
the Master Station and Battery Backup System. One Control Board is used per system.
Battery Backup System Cabinet
The standard Battery Backup System Cabinet houses the components that encompass the
Battery Backup System, which provides 24VDC continuous power to the ADA 100
Emergency Call System in the event of a power failure. The system monitors for AC
power failure, AC and DC surge suppression, and no/low battery indications. It features
auto-resetting overload protection, visual AC and DC power indicators and built-in battery
charger circuitry. The system includes two 12VDC sealed lead acid batteries (rated @ 4.5
amp hours each), 1.0 amp battery charger, 24VAC 20VA transformer, and has a
continuous output current of 800mA. UL listed Battery Backup Systems are supplied if
specified.
Amplifier
The Housing Devices ADA-35 Amplifier, powered by 24VDC, located in the Battery
Backup System Cabinet processes the audio communications for the entire system.
NOTE: If the system is connected to an annunciator or fire alarm system, or other auxiliary
power, and an independent Battery Backup System is not utilized, then a separate
Amplifier Cabinet (12” x 12” x 4”) is utilized.
Braille Instructional Sign
The Braille Instructional Sign is framed in an 18 gauge stainless steel frame with Tamper
Proof hardware. It is to be placed next to each Area Station in the system. The caption is
written in English and Braille and states: “FOR ASSISTANCE PUSH 3 INCH HELP
BUTTON”.
Illuminated Area Station Sign
An optional illuminated sign with universal mounting hardware is placed above each Area
Station for easy visual identification of the Area Station’s location. Illuminated signs are
available with or without their own independent battery backup system.
