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f:\standard ioms - current release\42004 instr. manuals\42004-438a.doc
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Auxiliary Control Example: Output 4, Used for Gate Entry
A Model 396-001 RED ALERT™ Emergency Telephone is installed at the entrance to a gated/secure
community. A visitor or delivery person approaches the gate and presses the
ASSISTANCE
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 4 relay contact to close for a pre-programmed amount of time then release.
Since the contact is rated at 125 mA, 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 25 below.
Figure 25. 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.
Please note that TMA may be used to change the contact closure settings, if the RED ALERT™
Telephone is operating in SMART mode.
