Depends on the brand - some offer an add on, some go inside the roller near the motor to sense relative motion (Carefree). Other than than those - just roll up when you leave or are out of sight of your awning, safest bet.
__________________ Brenda and John
'14 Ram 3500 MCSB 6.7L HO PullRite 16K S/G, Grey Columbus 320RS Camped '14 - 146 days/'15 - 196 days
USN-EOD(Ret), Master Chief, 30 yrs,
Master Blaster of the Navy
Brenda and John
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