893MAX LiftMaster Visor Transmitter 315, 390MHz, 3-Buttons, Compatible with LiftMaster Commercial Gate Operators and Commercial Door Operators that are 315MHz or 390MHz and have a Learn Button, Compatible with LiftMaster Garage Door Openers manufactured since January 1993 with Yellow, Purple, Red, Orange, or Green Learn Buttons, operates up to 3 Doors or myQ enabled Light Accessories, also known as 893MAXMC