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The remote is 2.5" (L) x 1.5" (W) x 3/8" (T) [edited thanks to comments for correction]. The range is about 40' line of sight. Our predicament was finding one, pocket-size, remote that could operate 2 different garage door openers. Carrying 2 of the standard sized, inbox, remotes was too bulky for our needs. We have two different Liftmaster garage door openers. One was a new Craftsman+ and the other an older (6 years old) Craftsman Formula 1 garage door opener. These openers both have rolling codes, though work on different frequencies (one with a purple learning button and the other with a blue one), so each of their standard remotes, and seemingly a number of after-market, ones won't learn both simultaneously. After unsuccessfully trying a few remotes from local hardware stores, we risked this one. It was pricier than others, though had the appeal that this one actually works, Indeed, it works great. Hope this helps, Mike If this review was helpful, please mark it as so to help others. If it wasn't helpful, feel free to mark it so, though I'd appreciate any constructive feedback on how it could be more helpful for you and others. Thanks