GateKeeper Interface
Relay Terminals
These terminals are for signalling the access control device. For loads over 2A, we do not
recommend connecting directly. Use a secondary relay as a buffer instead.
NO
Relay normally open contact
COM
Relay common terminal
NC
Relay normally closed contact
As access control devices are often inductive, switching off the current can cause a voltage spike
on the wires to the access control, damaging the reader. A snubber should be fitted near any
switch or relay contacts, for DC circuits a silicon rectifier diode such as IN4001 (supplied) is well
suited. Please note that the wire diode in the wrong direction (polarity) will cause a short circuit
and damage the power supply.
The diode
MUST
be
wired correctly according to the diagram,
otherwise it may cause
damage to the GateKeeper board or the device power supply.
EPIC Sanctuary
78-106 Manchester St
Christchurch 8011
New Zealand
PO Box 13352
Armagh Mail Centre
Christchurch 8011
New Zealand
NZ 03 974 9169
AU 03 9111 0323
US 415 678 1270
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