The Genie G3T-BX 3-button remote is designed for Genie Intellicode garage door openers and operates on 315/390 MHz frequencies. It comes ready for newer Intellicode 2 operators, while individual buttons can also be programmed to work with compatible Intellicode 1 Genie openers made from 1997 to present. Its compact 2.75” x 1.75” x 0.75” size makes it easy to carry or keep in a vehicle, and the three-button design allows control of multiple compatible garage door openers from one remote.