Document 50934 Rev B 5/15/00 PN 50934:B 7
1.0 Product Description
The Universal Digital Alarm Communicator/Transmitter (ADT-UDACT) may be used with a variety of ADT control
panels (refer to Appendices). The ADT-UDACT transmits system status to UL Listed Central Station Receivers via
the public switched telephone network. The ADT-UDACT, which is compact in size, mounts internally in some
panels or externally in a separate enclosure. EIA-485 annunciator communications bus and 24 volt (nominal)
connections are required.

1.1 Product Features

Primary
Phone Line Secondary
Phone Line
Modular Cable
P/N MCBL-7
Dual telephone lines
Dual telephone line voltage detect
Surface mount technology
Compact in size: 6.75" x 4.25"
Built-in programmer
Built-in four character red 7-segment LED display
Manual test report function
Manual master transmission clear function
Mounts in separate ADT-ABS-8RF or ADT-UBS-1 enclosure
Communicates vital system status including:
üIndependent zone/point alarm
üIndependent zone/point trouble
üIndependent zone/point supervisory
üAC (mains) power loss (programmable)
üLow battery and earth fault
üSystem off normal
ü12 or 24 hour test signal
üAbnormal test signal per new UL requirements
üAnnunciation of ADT-UDACT troubles including: loss of
phone lines, communication failure with either Central Station,
total communication failure
• Troubleshoot mode converts keypad to DTMF touchpad
• Individual LEDs for:
üPower
üEIA-485 loss
üManual Test
üKissoff
üComm Fail
üPrimary Line Seize
üSecondary Line Seize
• Open collector relay driver for Total Communication Failure or ADT-UDACT trouble.
• Real Time Clock
• Extensive transient protection
• Simple EIA-485 interface to host panel
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