This Logitech Harmony 890 has been Factory Refurbished to perform as new. A 90 Day Warranty is included. Logitech's Harmony 890, an upgrade to the Harmony 880 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.