One button features computer-programmed private security codes
Second button provides trinary coding with 19,683 selections for added security for gate operators and common use devices
12V battery and directional visor clip included
General purpose remote control for use with all billion code Liftmaster® products (Garage Door Openers, 320LM, 420LM, 520LM, 620LM Series of universal receivers and all 1200 Series)
Order the 82LM if:
•Your garage door opener motorhead has an green learn button.