Our motorhome has window shades made by MCD Innovations. These shades are considered to be “cream of the crop”. Every window has two shades: a sun shade that blocks the direct sun but allows light to come through and a night shade that completely blocks all light. These roller shades can be pulled down to any position and will automatically retract slowly when you release them.
The steps on our RV are operated by an electric motor that turns a semi-circular shaped metal plate. That plate has a has an arm attached to it that causes the steps to extend and retract. The motor works on the principal that it will continue to run until it meets a certain amount of resistance and then it will stop. So, for example, if you open the door when you are parked near a curb, the steps will extend until they bump into the curb then the motor will stop.