ENUK - V1.4 - 25/01/17
24
4000 Series GSM Audio Intercom - Technical Manual
4000 Series GSM Audio Intercom with Proximity
AUXILIARY OUTPUT AO2
The auxiliary output AO2 is an open collector output (switched low, 150mA max.) and can be used to switch a negative trigger onto
a transistor switched device, for example an Art.506N, for the programmed
A2T
time (refer to notes on page 35 setting the
A2T
time). This can be particularly useful when switching an additional device for instance a secondary gate control.
The AO2 output can only be triggered in two ways:
1. During a call:
press 5 on the telephone keypad to activate AO2 for the programmed
A2T
time.
2. At anytime (depending on the operation required) send one of the following SMS messages to the GSM intercom:
1111A2O?
to trigger the AO2 output for the programmed
A2T
time.
1111A2L?
to latch the AO2 output.
1111A2U?
to unlatch the AO2
output.
For this feature an additional transistor switched device will be required.
Fig.25
below shows an example of connecting an Art.506N
relay to the AO2 output.
Fig. 25
AUXILIARY INPUT 2
Auxiliary input 2 connects across terminals g & 4 on the GSM PRO module. When this input is triggered it will send an SMS message
to the master telephone number, as shown in
Fig.26
, (to store a master number
STM
follow the SMS programming section on page
38 or the relevant steps in the GSMSK PC software manual). Once this input is triggered it cannot be triggered again for 4 minutes.
This is to avoid multiple SMS messages being sent for the same alarm.
Fig. 26
IMPORTANT NOTE: auxiliary input 2 has been specifically setup for this function and does not activate auxiliary output AO2.
Refer to the notes at the top of this page for activating auxiliary output AO2.
Auxiliary Inputs/Outputs
