Model 372LM / 372LMC 2-button visor remote for LiftMaster garage door openers manufactured 2005 and later. Features 315 MHz frequency with Enhanced Radio Technology (ERT), over 100 billion rolling codes, and dual-channel operation to control up to 2 garage door openers. Programmable via the purple LED light on compatible openers. Controls door open/close and opener lights. Includes visor clip or key ring attachment and lithium battery (5-year lifespan with normal use). Note: Homeowners near military bases operating Land Mobile Radio (LMR) equipment at 390 MHz may experience interference. If interference occurs, consider the LiftMaster 355LM Conversion Kit, which operates on an alternate frequency to resolve compatibility issues.