F21-E1B Radio Remote Controls

(Radio Frequency remote control) A handheld, wireless device used to operate audio, video and other electronic equipment using radio frequency (RF) transmission. Unlike the common infrared (IR) remotes, RF remotes do not have to be aimed at the equipment.The term "RC" has been used to mean both "remote controlled" and "radio controlled". "remote controlled" includes vehicles that are controlled by radio waves, infrared waves or a physical wire connection, but the latter term is now obsolete.RF, also known as “Radio Frequency”, and IR, which stands for “Infrared” are two kinds of energy used in remote controls to communicate commands. RF uses radio waves and IR is a kind of light that can't be seen with the naked eye.