Videx GSM4K/4G - Auxiliary Inputs;Outputs; AUXILIARY OUTPUT A01; A01 = MODE 00, CALL ACTIVATED; A01 = MODE 01, USER ACTIVATED

66250754-4G-EN - V2.0 - 28/03/22
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4000 Series GSM Audio Intercom - Technical Manual
4000 Series GSM Audio Intercom with Proximity
Auxiliary Inputs/Outputs
AUXILIARY OUTPUT AO1
The auxiliary output AO1 has six modes 00 - 05 and can be set using the A1M command (refer to pages 43 - 44 for the list of A1M
programming modes). It is an open collector output (switched low, 150mA max.) and depending on the mode it is set to will
determine how the AO1 output behaves. The following examples show how the AO1 output can be connected.
AO1 = MODE 00, ‘CALL ACTIVATED’
When set to mode 00 auxiliary output AO1 will activate when
the call begins (i.e. when the call button has been pressed) and
deactivate when the call ends (either when the user ends the
call or when the SPT call time expires), see Fig.26.
Art.4810/4G
A01 output will activate
for the duration of the call
Fig. 26
AO1 = MODE 01, ‘USER ACTIVATED’
When set to mode 01 auxiliary output AO1 will activate:
1. When the terminals g & 5 are shorted together on the GSM
module.
or
2. By pressing 6 on the telephone during a call.
Auxiliary output AO1 will only activate for the programmed
time, see Fig.27.
Art.4810/4G
A01 output will activate
for the programmed time
Fig. 27
AO1 = MODE 02, ‘STATUS INDICATION’
When set to mode 02 auxiliary output AO1 is used exclusively as
a monitoring input. For example, checking if a gate/door is open
or closed. Once set the AO1 input status can be interrorgated in
two ways:
1. During a call: press 9 on the telephone keypad and listen to
the number of beeps in the ear piece. One beep indicates
the input is closed and two beeps indicates the input is
open.
2. At anytime: send the SMS message 1111CHK? to the GSM
intercom. An SMS message will be returned with IN=OP for
open or with IN=CL for closed.
For this feature an additional relay will be required and the AO1
input must be wired as shown in Fig.28.
Art.4810/4G
A01 is used exclusively
as a monitoring input
12Vdc trigger
from gate/door
to indicate open
or closed
Fig. 28