Karizma Plus Pir

[m4ttc]

I have the Karizma + (id buscuit ?)Installed with 10 points used. It has been in for 4 years or so

Recently, I have been getting false intruder detection on one of the PIRs. Not taper alerts just intruder

Should I just replece the PIR sensor? Any type model etc etc

Any tips \ advice would be appreciated.

Also, is it possible to have a silent entry/start rather than the bleeps??

Thanks

Matthew