The NextGen Genius Remote Extender adds RF to your existing remote simply by installing a battery transmitter. Simply install the Remote Extender in place of one of the AA or AAA batteries inside your remote control, then point the receiver or attach the bright eye emitter to the components you wish to control. Control your components from anywhere in the house. Even works through closet doors and closed entertainment system cabinets! Go from room-to-room and control your components up to 100+ feet away, no direct line of sight is needed. Unlike other remote control extenders, you don’t have to attach anything to the front of your remote or be limited to using your remote in one room. The receiver has a built in charger and comes with (2) 2/3 AA specially sized rechargeable batteriess. And by simply installing extra battery transmitters you can convert as many remotes as you like. Works with virtually every remote control!