Overview Imagine… controlling all your devices using only one remote - without a direct line of sight to the components! With the Harmony 890 Remote, you can wirelessly control your home entertainment system while hiding all those unsightly wires and components behind cabinet doors or a wall. Logitechs Harmony 890 remote control uses both radio frequency (RF) and infrared (IR) wireless signals to deliver powerful complete control of your home-entertainment system that may be hidden behind cabinets. With a wireless range of up to 100 feet, the Harmony 890 remote sends RF commands to a wireless receiver, which then blasts infrared signals to the components. The Harmony 890 remote makes universal control for home entertainment and advanced lighting systems simple