Product Description: RF Converter Modulator with 3 Antenna Inputs, PAL NTSC Support, Plug and Play, US Plug AC 100-240V Versatile Input and Output: The RF modulator is designed with three CVBS inputs, allowing you to connect multiple devices such as satellite set-top boxes, cable TV boxes, gaming consoles, DVD players, VCRs, STBs, cameras, and other AV sources. This setup enables simultaneous output to three different TV channels, providing a seamless viewing experience across multiple screens. Signal Conversion: Perfect for older TVs without line-level AV jacks, this RF converter modulator transforms composite video and analog stereo sound signals into RF (Coaxial) signals. Customize your viewing experience with adjustable sound volume and video brightness to suit your preferences. Plug and Play: Enjoy a hassle-free setup with this powerful TV modulator, which supports the NTSC TV format and up to 136 full-band channels for UHF frequency. Featuring four modulated TV channels, a channel digital display, and an optional switch, this device requires no additional drivers or adapters, offering a true plug-and-play experience. F Type Coaxial Input and Output: Equipped with an F type female coaxial input, this modulator allows easy connection to antennas, HDTV tuners, satellite set-top boxes, or cable TV boxes. A separate RF coaxial output is available for connecting to your TV or RF splitter, enabling you to extend analog signals to other TVs. The included channel switch helps avoid interference with existing players like VCRs. Extensive Compatibility: This home RF modulator is compatible with a wide range of TV boxes and other sound and video sources. It functions as a UHF modulator with support for both PAL and NTSC formats. Featuring button digital programming for modulated channels, it is also compatible with DA-8200 and DA-550 series distribution modulators, making it a versatile addition to any home entertainment setup.