Pub. 42004-467D
Camera Telephone Manual
Page 15 of 30
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-467D.docx
04/19
Auxiliary Outputs
Each telephone includes two isolated solid-state switches capable of switching a maximum of 125 mA at
48 V dc, or 80 mA at 28 V ac.
TB2
(
OUT1
) and
TB5
(
OUT4
) on the emergency telephone PCBA
provide the connections for the auxiliary outputs (see Figure 12).
Refer to the Auxiliary Output Control section for additional information.
Auxiliary Output Control
Output one connects to terminal block
TB2
on the telephone’s PCBA (see Figure 12). 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 strobe.
Output one can be programmed to remain closed for up to 255 minutes (in 1-minute increments) after the
emergency call ends. This output can be deactivated before the call is disconnected 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. Retry the command if the beep
is not initially received.
N
OTE
:
This feature requires the use of GAI-Tronics No. 40404-045 plug-in power supply (120 V ac
source required).
Output four connects to terminal block
TB5
on the telephone’s PCBA (adjacent to
TB2
). This output is
remotely controlled by a DTMF command from the called telephone. This remote-control output can be
used to activate or control a door latch, gate relay solenoid, alarm, etc. from the called party location (see
Figure 12).
Auxiliary control example
: Output four used for gate entry
A Model 397-001CAM RED
ALERT
®
camera 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 that
automatically calls the security
office. The security guard
presses the pre-programmed,
DTMF
open gate
command
after verifying entry approval.
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
acknowledges acceptance of this deactivation command with a short beep. Retry the command if the
beep is not initially received.
Because the contact is only rated for 125 mA, an interposing relay is required to switch a higher voltage
to the gate solenoid when energized, causing the gate to open (see Figure 13).
Figure 13. Example of RED ALERT
®
Telephone
Installed for Gate Operation
