DEI Headquarters Inc. DEI7652 Manuel D’Utilisation

Page de 55
 
➤ Nuisance prevention® circuitry  
Your  system  has  Directed’s  Nuisance  Prevention®  Circuitry  (NPC).  It 
prevents annoying repetitive trigger sequences due to faulty door pin 
switches or environmental conditions such as thunder, jackhammers, 
airport noise, etc.  
For example: If the alarm triggers three times within a 60-minute period and 
each time the same sensor or switch triggers the alarm, NPC will 
interpret those triggers as false alarms. After the third trigger, NPC 
ignores, or bypasses, that sensor or switch (along with any other sensors or 
switches sharing the same zone) for 60 minutes.  
If the bypassed sensor tries to trigger the security system while it is being  
bypassed, the 60-minute bypass period will start over. This ensures that  
a sensor that is continually being triggered will remain bypassed.  
The vehicle doors are protected by NPC differently. If your security 
system is triggered by an open door for three full cycles, the system will 
bypass the doors until the trigger ceases.  
© 2008 Directed Electronics. All rights reserved. 
39