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42004-472C
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ANUAL
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Output four 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 can be used to activate or
control a door latch, gate relay solenoid, alarm, etc. from the called party location.
Auxiliary control example: Output four used for gate entry
A Model 393-001AD RED ALERT
®
Auto-dial Telephone is installed at the entrance to a gated/secure
community. A visitor or delivery person approaches the gate and presses the
CALL
push button, which
automatically calls the security office. Upon verification of approved entry, the security guard presses the
pre-programmed, DTMF “open gate” command. This command causes the RED ALERT
®
telephone’s
Output four relay contact to close for a pre-programmed amount of time then release. 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.
Due to the low current rating of the output contact, an interposing relay will be required that, when
energized, will switch a higher voltage to a gate solenoid and cause the gate to open. Refer to Figure 17
below.
Figure 17. Example of RED ALERT
®
Telephone Installed for Gate Operation
The output pulse duration (closure) and the DTMF code used as the “open gate” command are user
programmable. Refer to the “Standard Mode Programming” section for key sequence program settings
on Page 21.
Please note that TMA may be used to change the contact closure settings, if the RED ALERT
®
Telephone
is operating in SMART mode.
