Between 1993 and 2005, most garage door manufacturers used the 390 MHz radio frequency to operate remote controls for residential garage door openers. During that time, Chamberlain used Billion code and Rolling Code technology. In 2005, many manufacturers, including Chamberlain, switched their radio frequency to 315 MHz, in response to the U.S. Departments of Defense and Homeland Security use of the 390 Mhz frequency to operate their nationwide Land Mobile Radio (LMR) system.
With the change in frequencies and coding technology, it is possible to have multi-car garages with each door operating on a different frequency. Chamberlain offers remote controls and keyless entries that allow for operation of different operators with the convenience of one control.
953EVMC/956EVMC, 953EV 956EV - Remote Controls work on any Chamberlain manufactured unit made from 1993 to present.
940EVMC/ 940EV / 940EVC - Keyless Entry works on any Chamberlain manufactured unit made from 1993 to present.
KLIK5U - Remote Control work on any Chamberlain manufactured unit made from 1993 to present, plus other manufacturers including Genie, Overhead Door and Linear.
KLIK2U - Keyless Entry works on any Chamberlain manufactured unit made from 1993 to present, plus other manufacturers including Genie, Overhead Door and Linear.
You can order anyone of these items on Chamberlain.com
Note: We no longer manufacture model KLIK3U-RT1, however, we continue to offer support.

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