The latest versions of the Liftmaster "rolling code" technology use a purple or a (new) yellow learn button. Let me describe the characteristics of the PURPLE learn button technology:
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| PURPLE learn button Logic board |
The PURPLE learn button machines receive on 315 Mhz, rather than the earlier 390 Mhz. This new frequency has been determined to be somewhat less susceptible to outside signal interference. Every time the remote transmitter button is pressed, a different code is sent to the receiver, as before. The reason it has a PURPLE learn button is to differentiate it from the red learn button machines, because the remote transmitters operate on different frequencies, and thus are not compatible. The PURPLE learn button machines were made beginning in 2005 and are still currently made. Remotes made for the PURPLE learn button display this symbol:
They are in the 37XLM family, i.e., 371LM, 373LM, and 377LM wireless keypad. Of course, being currently in production, these are all still available. |
| 371LM remote transmitter |
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| 377LM wireless keypad |
If you want to compare any of these remotes to yours, visit www.liftmaster-store.com . They have great prices and nationwide delivery. They conveniently have the various remotes listed by the technology and/or the color of learn button to make it easy for customers to find the correct remote control. : )
Next time I will talk about the latest Liftmaster 'flagship' technology, the (new) yellow learn button.
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