Use batteries rather than the 12V power from the control board. The batteries usually last over 5 years because they are hardly ever used. Liftmaser has a different type of ground configuration so the 12V power from the board with a 3 terminal shared ground design for an accessory will not work. Here would be the wiring: o/p on keypad to Single Button on control inputs gnd on keypad to ctrl power on control inputs 12v on keypad not used