ALL-IN PACKAGE – Includes 1 Transmitter and 4 Receivers. Extend and distribute 1 HDMI source to 4 HDMI displays over CAT/6/7 simultaneously. **NOTE: If you live in an area with thunderstorms, plug this product's power adapter into a surge protector power strip to protect your device from voltage spikes. Get More Information: https://www.gofanco.com/catalog/product/view/id/237/s/4-port-hdmi-hdbitt-extender-1080p-120m-hdbitt4p/