If you have equipment specifically with HDMI outputs (e.g., Blu-ray players, cable boxes, Apple TV, Roku).Most available options can transmit through walls, and dual-HDMI products often have a “local” HDMI out, so you can have a TV in the same room as the sources, with a second TV connected wirelessly to the same sources. If you want to have your sources and TV in two different rooms.In the case of the Iogear and Monoprice models, the TV itself can often power this wireless receiver. The signal from your sources gets sent wirelessly to the small receiver box. With wireless, you only need to run power to the TV. If you want to mount your TV on the wall, you need to run power and HDMI cables.This is an especially common situation with projectors. If your sources are in a different part of the room than the TV, you can send the signal wirelessly instead of running long cables (e.g., across the floor, under the floor, along the baseboards).
