The RC-GZ1 is a universal remote control engineered as a direct substitute for Roku RC-GR4 models and compatible with nearly all Roku devices and Roku-powered televisions from TCL, ONN, Hisense, Sharp, and other manufacturers. Voice control functionality enables hands-free content search, channel launching, and menu navigation, while standard controls manage volume, input switching, and app access. Setup requires battery installation followed by pressing the pairing button while powering on your Roku device for automatic recognition. The RC-GZ1 replaces legacy models RC-FA5, RC-AL5, RC-AL2, RC-FA1, and RC-81, though app shortcut button configurations may vary by unit.