As you know all our linear actuators can be controlled using one of the two methods; 12V power supply and control boxes.  The advantages of using the control box are easy set-up, AC power and nice looking hand remotes.  The disadvantage of using the control box for linear actuator is higher price.  Using a 12V power supply requires time for set-up but very cost effective.  We advise all our customers to think about the different control options available.