66250754-EN - V1.0 - 18/02/19
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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 is set using the A1M command (refer to page 43 for full 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 SET TO MODE 00, ‘CALL ACTIVATED’
When set to mode 00 auxiliary output AO1 will activate when the call begins and deactivate when the call ends, as shown in Fig.30.
Art.4810
AO1 output will activate
for the duration of the call
To Antenna
Fig. 30
AO1 SET TO MODE 01, ‘USER ACTIVATED’
When set to mode 01 auxiliary output AO1 will activate when the terminals g & 5 are shorted together on the GSM PRO module or
by pressing 6 on the telephone during a call, as shown in Fig.31. Auxiliary output AO1 will only activate for the programmed time.
Art.4810
AO1 output will activate
for the programmed time
OR
To Antenna
Fig. 31
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