Marantec Garage Door Opener Modular Multi-Function Wall Station M3-543. Compact, stylishly designed to fit in a standard single gang electric box. Our wall control unit utilizes a unique, modular design that makes it easy to combine several individual controls into one solid panel. This eliminates the confusing array of controls that are commonly installed with more than one garage door. Uniquely our stylishly designed controls fit standard electrical boxes, featuring a security vacation lock and illuminated push-buttons.