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Hi.Engrs I'm new Here ........Ihave Touble in My New Projects ........The Designer Used CT1_module to Monitoring The Door Contact (Normally close )......So it's give me Monitor indicator When Door Close Not open .....and That's Against What I want .
So I'm Asking How Ican Sovle This Issue ??
1/ Can Adjust The CT1 To Mointor (Normally Close)
2/Or Ishould Use Another Modules

Iwill Be grateful To help Me

you can use CT1 but you have to pass through contactor to invert the status of the contact (NO/NC),
if it is not possible,may be thechnical reason or legal/regulation(contactor always not FM or UL device) reason;
use SIGA SEC 2 it's about 70$.
thanks,

Easiest thing is to throw a 47k resistor in series with the door contact, this way when door is closed you have proper supervision, when it opens, you'll get a trouble signal.

Zuckman1,
my principle is that
in normal condition fire alarm panel should be clear(no trouble and supervisory),
that is not hte case here;
regards,