TV transmitter is a device that is use for transferring video into the TV with a player with a moving the player to the TV. For example you want to play songs or videos at your TV and your component is attached at your car or vehicle. You can simply use a TV transmitter at your component and connect it to the transmitter while the other end is connected to the TV. Now that is handy since you don't have to move your large component to get near to the TV now. You just need to connect each of wires in both ends. The problem with TV transmitter is it has wire and if your kids step on it the wire inside the cable, they might break it and your transmitter will be a waste.