Beyond irritating
This should be the next product that Amazon requires to be in its new "fuss-free" packaging. The entire contents are contained in a nuclear-explosion-proof blister pack, multiple staples must be pried out of the folded-up instruction leaflet before it can be opened and read, the wireless keypad itself is encased in a huge sticky label that splits apart into a thousand little strips when you try to peel it away, and worst of all, the three of us couldn't remove the battery cover, which is required in order to access the second hole for wall mounting and comes with no guidance other than "slide it off." With what, a jackhammer? I'm stunned that the manufacturer went to such great lengths to make such a simple product as irritating to the consumer as possible. Thankfully, Amazon is extremely consumer-friendly with its generous return policies.

Easy All Around
It's almost hard to review a product like this: either it works or it doesn't. It works. It is extremely easy to install (less than five minutes). It is easy to program - very clear instructions. It even comes with the battery installed! The only caution - make sure that you order the right model of remote for your model of opener!