Answered 5 years ago by Paul
This sounds like you have a KX15DTAM anti masking detector. The
flashing blue LED tells you that it is processing the anti masking
to confirm that the detector hasn't been partially or fully covered
over so this seems like normal activity. You can disable the LED
but be aware, if you do so, you have no visual verification that
the sensor is operational. If you do have a fault on the sensor,
the alarm should display a fault on the panel or fail to set. To
disable the PIR I would recommend entering engineer mode first. If
you don't have an engineer code, you will have to silence the
tamper alarm with your user code once the detector lid has been
removed. Depending on how your panel has been configured, you may
require an engineer code to reset the tamper after so bare this in
mind. You will find a bank of dip switches on the sensor once the
lid is removed. You will need to switch jumper number 1 off to
disable the LED.
