61LM Lift-Master 61LM 390 Frequency 9 Code Dips

• 390 MHZ Frequency, works on models from 1984-1992
• Works with 8 or 9 three position dip switch systems
• 12V battery and visor clip included
• Accepts multiple remote controls utilizing up to 8 functions, and one Security+ keyless entry
• Will work with Lift-Master, Sears, Craftsman or Chamberlain remotes with yellow LED light

What can I say, It works. - This product does what it is supposed to do, no more and no less.It opens and closes the garage door when the switches are setproperly.