This document discusses and compares features of three garage door openers: the Genie 37337R Revolution Series Close-Confirm Remote, the Chamberlain LiftMaster 387LM Universal Keyless Entry System, and the Linear MultiCode 2-Channel 12V/24V Gate Receiver. Key features highlighted include operating range, feedback on door status, compatibility with various garage door models, battery power, and weather resistance. Contact information is provided for the Garage Door Openers store.