Velleman DK-9350 User Manual - page 32
APPLICATION HINTS FOR THE AUXILIARY FACILITIES
The tamper switch is Nomally Closed while the
keypad is secured on gang box. It is open when the
keypad is removed from the gang box. To prevent
sabotage, connect these terminals in series with a
24 hour N.C. protection zone of an alarm system if
required.
With the help of a Normally Closed door
position sensor (usually a magnetic door
swithch) on the door to set up the
following functions:
The Key Active Output will switch 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.
Door Auto Relock -- The system will immediately
relock the door after a valid access has been gained
to prevent “tailgate” entries.
Door Forced-open Alarm -- The keypad will
generate alarm instantly if the door is forced to open.
Enable the function with Programming Option 801.
Door Propped-up Alarm -- The keypad will
generate alarm if the door is left open longer than the
pre-set delay time. Enable the function with
Programming Option 9 with time of 1 to 999 seconds
possible.
Inter-lock Control -- When the door is open, the
interlock output of the keypad will give a (–)
command to stop the other keypad in an inter-lock
system.
16 17
32