041AS050-1 is the control board for LiftMaster and Chamberlain AC screw drive openers from 2005 through 2015. Has the 315MHz Security+ receiver and a purple learn button, but no light socket on this version. Kit includes the board and end panel. If your screw drive opener's flaky with remotes or just dead altogether, replacing the logic board usually fixes it. You might see it listed as 41AS050-1, 41AS050, or 41A5687. Make sure yours is actually an AC screw drive model and falls in that 2005-2015 window before ordering.