MDS 05-6399A01, Rev. F MDS™ Master Station 109
6.6 Alarm and Alarm/Relay Modules
Figure 6-9 Alarm/Relay Module
There are 2 versions of the Alarm Module depending on whether the system is redundant or non-
redundant. The module pictured above is for redundant systems.
Table 6-18. Alarm Modules
Interfaces and Indicators
RX/TX RF Connection for Radio A, Radio B, and OUT.
Relay to switch RF OUT based on active A or B.
Toggle Switch to select active A/B or Auto
Alarm and Active LEDs
Alarm/Audio Connector
Does not include RF Connections
Does not include Relay
Does not include Toggle Switch
Alarm and Active LEDs
Alarm/Audio Connector
Both versions of this module provide user connections for external alarm dry contacts and four
wire audio.
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