IRIS Touch Quick Installation & Maintenance Guide Version 1.0 Page 9 of 16
PIN Inputs
The IRIS Touch dialler has 4 pin inputs that can be used to generate alarm messages, if you require more
than 4 pin inputs then you can fit the IRIS Touch expansion board (ordered separately). These can be:
Text messages via SMS (GSM).
SIA, Contact ID and Fast Format alarm messages over IP to the monitoring centre.
Note: These pin alarm inputs can also be used when the dialler is directly connected to an alarm panel
via the serial or RS485 connections.
Via Open/Close Contact Source
Each pin input is designed to be connected in a loop via
an open/close contact source from an alarm panel, or
other device, to a reference ground pin available on the
IRIS dialler, as shown opposite.
Opening the contact (i.e. loop is open circuit) generates
an alarm signal. Closing the contact generates the
equivalent restore signal.
Via Sense Resistors
It is also possible to link the contacts to the IRIS dialler via
sense resistors so that an open or short circuit tamper on
the loop can be detected and the monitoring centre
alerted. In this case, the connections should be made as
shown opposite.
Note: For this feature to work correctly it is essential that
the resistors are connected at the contact end of the loop
and not the dialler end. The monitoring centre must also
enable the monitoring of this facility on the dialler within
the IRIS Secure Apps receiving system.
Expansion board
The IRIS Touch has the option to add one of 2 expansion boards detailed below, which gives the
options for additional pin inputs or the option for PSTN dial out (PSTN as an outbound transmission path
for alarms).
Pin inputs
Pin inputs + PSTN dial out
For further information on the expansion board please refer to the IRIS Touch expansion board
installation manual from http://www.chironsc.com/downloads_security.html.
Switch on and test
To confirm power is applied, look for the indicator SYS LED is flashing yellow on the IRIS Touch dialler
board.
