Enjoy! #FF-This hashtag mostly shows up on Fridays, which should give you a good indication of what one of the Fs means. The other stands for Follow, and the two combine to make the phrase Follow Friday.. Follow Friday is essentially a Twitter holiday with the aim of getting people to follow one another.
Technical. Original manufacturers part,390 Mhz frequency, 9-volt battery operated, part number 976LM a 977LM keypad is substituted per the manufacturers change, Color: Grey Works with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 390 Mhz frequency.echnical. Original manufacturers part,390 Mhz frequency, 9-volt battery operated, part number 976LM a 977LM keypad is substituted per the manufacturers change, Color: Grey Works with all Liftmaster, Sears and Chamberlain garage door openers, utilizing the 390 Mhz frequency.
These systems have a purple Learn button. For older systems, that have orange or gray Learn buttons, a Liftmaster 976LM keyless entry pad is compatible with your opener.The Liftmaster 877Max Wireless Keyless Entry Pad includes the functionality to provide visitors and delivery people with temporary access to the garage without giving them your entry code.This keypad is compatible with all 390 and 315 MHz openers.hese systems have a purple Learn button. For older systems, that have orange or gray Learn buttons, a Liftmaster 976LM keyless entry pad is compatible with your opener.