Sensors not working

[Maverick]

Also one of my sensors (13) seems not to working, when I wave over it all the sensors next to it work but not 13. Is there a way to fix them or change them

Is stuck red or showing up as not activate?

Try cleaning it with compress air, in a can.

[Maverick]

From Protee's support site.

http://csc.protee-united.com/entries/20663067-Checking-the-sensors