Nuisance prevention® circuitry, Nuisance prevention, Circuitry – Directed Audio 2 Way Security and Conveniece System VSS-204TW User Manual

Page 16: Uisance prevention

2. Turn the ignition On for more than 1-second and less than 3-seconds.

3. The siren will chirp once to indicate one-time bypass has been activated.

To cancel one-time bypass perform one of the following:

Arm then disarm the alarm.

Turn the ignition On for more than 3-seconds.

UISANCE PREVENTION

CIRCUITRY

Your system has 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.

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 system while it is being bypassed, the 60-minute bypass

period will start over. This ensures that a sensor that continually triggers will remain bypassed.

Doors and the ignition switch are covered by NPC

differently; if the alarm is triggered by an open

door or ignition ON for three full cycles, the zone will be bypassed until the trigger ceases.

NOTE: Arming and disarming the system does not reset this function.

The only ways to reset a bypassed zone are for it to not trigger for 60

minutes, or to turn on the ignition. If testing your

system, it is important to remember that the NPC

programming

can cause zones to be bypassed and appear to stop working. If five

chirps are heard when disarming, NPC

has been engaged. If you

wish to clear the NPC

memory, turn the ignition key on.

NPC

is On/Off programmable. See your dealer and the Programming section of this guide for

more information.