Advent Controls X5 Series User Manual

8.2 Input Connection
The inputs are optically isolated from the digital circuitry. Both inputs are active low and
should be connected to the GND terminal in the active state. Input impedance is 4.4kΩ
and is limited to 13V max. The input features protection against over-voltage but should
not exceed 50V.
8.3 Connection to a Burglar Alarm
The system features an optically isolated input terminal which is driven low (to GND or -VE)
in the active state. The input terminals are held at approximately 13V (or +VE if VIN is less
than 13V) through a 4400 Ohm load. The input terminals may be connected to the –VE
terminal of a burglar alarm bell output (or other programmable open collector output) to
allow the system to be used as an alarm auto-dialler and SMS sender. Both equipment
must share a common GND connection—connect GND to panel ground.
Please note, whilst most alarms pull the negative terminal down to ground when active, the
installer should ensure this is the case with their alarm system. If the alarm output goes from
GND to +VE or open circuit the INLEVEL settings must be changed (see section 4.3). Alter-
natively it may be necessary to use an intermediate relay board for connection to some
systems. Please contact support@adventcontrols.co.uk for assistance.

Advent Controls X5 Series Specifications

General

Brand	Advent Controls
Model	X5 Series
Category	GSM/GPRS Modules
Language	English