Garage door opener replacement circuit boards for many different Genie model garage door openers. These are genuine replacements direct from the manufacturer- Genie. Since the circuit boards control most of the garage door openers operation- from the power, the limits, to the range of the remotes- it is a common part to look at when something goes wrong with your garage door opener. Most of the newer garage door openers contain one circuit board, a lot of the older models had two or even three that all controlled different functions. See the detailed descriptions of the products to make sure you get the right circuit board for your model garage door opener.