We had to replace our entire garage door opener recently, the new one was not compatible with the existing remote and wireless keypad we have. (66LM Keypad & 81LM Remote) These remotes will only work with garage door systems that have a GREEN learn button. The remote and keypad are not that old, I bought them from GatehouseSupplies.com last summer... You can see what I paid for them, and those prices are still current on the website, anyone interested in these make me an offer.