Input and Output Connections
AC-225x Series Hardware Installation Manual 25
REX Inputs functions when using MD-D02:
Double door controller:
(each door has two readers)
Door 1 – IN1
Door 2 – IN5
Four door controller
(each door has one reader)
Door 1 – IN1
Door 2 – IN2
Door 3 – IN5
Door 4 – IN7
4.2.2 Door Monitor Input
The Door Monitor Input typically connects to a Normally Closed door sensing
micro-switch for door status monitoring. Using Door Monitor enables many
advanced options such as door forced alarm, door held open warnings,
interlocking doors and more. The following should be defined:
Single door controller:
Door 1 – IN1A
Double door controller:
Door 1 – IN1A
Door 2 – IN2A
Dedicated Inputs functions when using MD-D02:
Double door controller:
(each door has two readers)
Door 1 – IN1A
Door 2 – IN6
Four door controller:
(each door has one reader)
Door 1 – IN1A
Door 2 – IN2A
Door 3 – IN6
Door 4 – IN8
4.2.3 General Purpose Inputs
These are free inputs that can be used for various functions. The following
should be defined:
Single door controller:
Door 1 – IN2
Door 1 – INA
Double door controller:
No general purpose inputs available
General purpose inputs are suitable for most uses. For example, they might be
used to detect tampering, to activate alarm sensors or for monitoring power
supply failure.
General purpose inputs functions when using MD-IO84 or MD-D02:
MD-IO84:
IN5 to IN12
MD-D02:
IN5 to IN8 except the dedicated inputs