My awning extended itself whilst travelling at 60 mph, needless to say I am now awaiting a new awning as part of an insurance claim.
On the WeatherPro power awning there is a bolt that holds the motor shaft to the awning arm, this had managed to unscrew itself and allow the awning to un-roll and extend, bolt needs to be checked regularly but for peace of mind DUNNNC's awning lock seems to be the answer. All the isolator switches in the world will not help if that bolt comes out.
Yes it was the motor shaft screw and if that baby drops out the awning is able to free wheel and un-roll. Sorry no pics as the awning has gone completely, it was left by the roadside so that we could collect the next day but someone beat us to it and probably sold it for scrap as it was totally unusable, thankfully no damage to the wagon.