Description: video converter box RCA AV CVSB to RF video adapter converter support RF 67.25Mhz 61.25Mhz AV to RF scaler TV switcher. No need to install drivers, portable, flexible, plug and play. Low power, no power adaptor. This AV to RF signal converter will convert video signal or audio signal to RF composite video signal and audio signals, while supporting DVI system sideline signals. So that can play on TV, VHS VCR, DVD recorders, etc Specification: Color: White Size: 2.362.090.79 inch Material: Plastic Input ports: 1xRCA Output ports: 1xRF RF frequency67.25Mhz 61.25Mhz Package Includes: 2 AV to RF Adapter 2 USB Cable 2 RF Cable Note: Please contact us firstly if there are any problems with the product. The item's color may be slightly different from the pictures due to the light and screen setting difference. Please allow slight dimension error due to manual measurement.Thanks for your kindly understanding.