Used board field tested and fully functional also included is the expansion board

K41-0073-000 is a HD Gate Main Control Board Service Kit. For use with various LiftMaster® Heavy Duty Commercial Slide and Swing Gate Operators. This item is compatible with the following models:  HDSL24UL & HDSW24UL. Also known as: K41-0073-000MC. Check the manual or replacement parts diagram for specific part information before ordering to ensure compatibility.