Could someone explain the working of one of these.
Just got one and not sure what 'extra' if any, information it gives me ???
Didn't want to be setup as an extra fire group or anything, just not sure how its helping me out ???
Just got one and not sure what 'extra' if any, information it gives me ???
Didn't want to be setup as an extra fire group or anything, just not sure how its helping me out ???