Velleman HAA2801 - Manual (Page 19)

The Duress Output switches to (-) ground when duress code is entered. You may use it to turn
ON an LED lamp and/ or a small buzzer to notify a guard; or connect it to a 24 hour Normally
Open protection zone of an alarm system.
Only one connection option is recommended. Make sure that the sink current does not
exceed the maximum rating of 100mA.
(E) DURESS OUTPUT
The Key Active Output switches to (-) ground
for 10 seconds whenever a key is touched.
You may use it to turn ON an LED lamp and
/or a small buzzer to notify a guard; or to
energize a relay to switch ON lights or trigger
an CCTV Camera to start recording.
Make sure that the relay for switching ON
lights has high enough isolation between
high voltage and low voltage to prevent
damage of the keypad.
Only one connection option is recommended.
Make sure the sink current does not exceed
the maximum rating of 100mA.
External power supply and isolation relay
are strictly necessary in driving high power
device, such as lights.
(D) KEY ACTIVE OUTPUT
(a) (b)
GND
(-)
DOOR
SENS
O/P 1
INHIB
INT.
LOCK
DU
OUT
GND
(-)
DOOR
SENS
O/P 1
INHIB
INT.
LOCK
DU
OUT
19
ALARM
O/P
KEY ACT
O/P
GND
(-)
ALARM
O/P
KEY ACT
O/P
GND
(-)