Phantom sensor

Hello, new user here, love it so far btw! Quolsys4 panel with interlogix 319 Mhz sensors.

I have all the sensors connected to the panel, system works flawlessly, however I keep getting a phantom sensor being detected as open. I have gone through the house 3 times today and none of the sensors are missing and all are connected and closed.

I have removed it from the panel and when I go back to auto learn, it pops back up.
It is named E490A0

this is driving me mad ! any ideas?

thanks

Do one of your neighbors have a system with 319.5Mhz sensors? If you are certain you don’t have any motion detectors or other sensors left to pair, situations like this are usually caused by a neighbor’s system which is in range. During auto-learn your system may pick up those sensor signals, so double check the DLID on the sensor you are adding.