GAI-Tronics 300 Series RED ALERT Emergency Telephone Manual - Manual (Page 30)

P UB . 42004-438K
300 S ERIES E MERGENCY T ELEPHONE M ANUAL P AGE
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Auxiliary Output Control
As previously noted, each RED ALERT ® Telephone is capable of providing two isolated control outputs
in the form of a dry (volt-free) contact closure rated at 125 mA.
Output 1 connects to TB2 on the telephone’s PCBA (refer to Figure 23). This output closes when an
emergency call begins (
HELP push button activation only) and remains in that state for the duration of the
telephone call. The typical use of this output is to activate the flashing sequence on a GAI-Tronics 530
Series Strobe.
N OTE : Output 1 can be programmed to remain closed for up to 255 minutes (in 1 minute increments)
after the emergency call ends. This output extension can be deactivated via an external switch or by
pressing “*921” on the keypad of the called telephone. The RED ALERT
® Telephone will acknowledge
acceptance of this deactivation command with a short beep. If the beep is not initially received, retry the
command. This feature requires the use of GAI-Tronics No. 40404-045 Plug-in Power Supply (120 V ac
source required).
Output 4, connects to TB5 on the telephone’s PCBA (adjacent to TB2). This output can be remotely
controlled via an appropriate DTMF command. This remote control output could be used to activate or
control a door latch, gate relay solenoid, alarm, etc. from the called party location.