4422 Swipe Card Reader module
5-5
LEDs
The LED outputs can be used to drive LEDs in the card reader itself,
or in a 272 Remote Indicator (the connections for which are shown
below). The LED outputs are common anode (VA at +10V) and show
when the door is locked/unlocked and if the card is valid, see the
section on “Door indicator LEDs”.
272 Remote
Module Indicator Function
R terminal 2 red LED cathode (-ve)
A terminal 3 amber LED cathode (-ve)
G terminal 4 green LED cathode (-ve)
VA terminal 1 LEDs common anode (+ve)
Any suitable screened cable can be used for the LEDs - the
conductors can be run inside the same cable as the other reader
connections.
If the card reader itself has one or more LED connections, read the
description of its operation and then decide which of the swipe
module’s LED outputs is most suitable to drive each LED.
Local warning bleepers
The system can be configured to give a local warning output on the
horn
terminal when a door is forced or is left open for longer than
a specified time. Each local warning output should be fed to a bleeper
mounted near the door. For low current devices up to 10mA you can
draw the power from VA. For more power, you can connect the
sounding device between the auxiliary 12V supply and the local
warning output which is an open collector which can sink up to
250mA at 12V DC. For even more power, use the local warning
output to control a relay switching a separate power source at the
door.
Module Function
Local warning output - open collector - 0V when active
VA +10V (10mA maximum)
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