Ⅰ. Features: 1. Sharing function: The AV to RF TV modulator converter can share set-top boxes and DVDs with multiple rooms. 2. Multiple formats: The RF modulator can be flexibly set to TV formats such as PAL, NTSC and IF to suit users around the world. 3. Wide frequency range: The modulator has a wide frequency range of 471.25MHZ-885.25MHZ, selectable transmission frequency and corresponding frequency display, and built-in memory will reduce and avoid interference. 4. Standard PCB circuit design: The AV to RF TV modulator is designed with broadcast standard PCB circuit to further improve stability and image quality. 5. Applicable: AV to RF TV modulator is suitable for global or external setting with NTSC, PAL BG, 1, DK, LMN TV formats. Ⅱ. Specification: Item Type: RF Modulator; Material: ABS; RF Frequency Range: 471.25 MHz -885.25 MHz; Channel Range: PAL: 21-69; NTSC: 14-83; Factory Default: 21 Channel; PAL TV Format: PAL, NTSC; Audio Carrier Frequency: 4.5, 5.5, 6.0, 6.5 MHz. Ⅲ. Package List: 1 x RF Modulator, 1 x USB Cable, 1 x Manual.