Liftmaster 355LM-2 315 Mhz Garage Door Opener Conversion Kit This is the Residential & Commercial grade conversion kit guaranteed to work on any Sears Craftsman garage door opener. Garage door opener receiver upgrade or replacement, compatible with ALL 315 MHz Security+ remotes Replacement receiver works for 3 wire wall control systems and includes the 85LM to generate the power needed for 2 wire systems. Stops code grabbers COLD! Will work with Lift-Master, Sears, Craftsman or Chamberlain remotes. duplicate the frequency