HDMI-compatible to RF coaxial converter converts HDMI-compatible digital signal to RF analog signal. You can use the remote control to switch the output screen up and down, as well as amplitude, brightness, contrast, and color saturation. Display DVD/Blu-ray players, game consoles, set-top boxes, or PC computers with HDMI-compatible source device coaxial analog signal output on old TVs. You can also display multimedia documents from laptops for audiences via a large screen projector. HDMI-compatible coaxial output, which can transmit signals over long distances via coaxial cables and use them in different rooms. Specification: Size: 10x6.5x2cm. Material: ABS. Color: shown as pictures. Note: There may be slight color distortions due to different computer resolutions. There may be minor errors due to different hand measurements. Package includes: 1 x Coaxial Converter. 1 x Manual. 1 x S terminal cable. 1 x Remote control.