[WIDE FREQUENCY RANGE] With a wide frequency range of 471.25 MHz to 885.25 MHZ, selectable transmission rate, and built-in memory, this modulator minimizes interference and delivers stable, high-quality images. [STABLE AND HIGH-QUALITY DESIGN] The AV to RF TV modulator is designed with a standard PCB circuit, ensuring stability and improved image quality for your viewing pleasure. [Share content with multiple rooms] The AV to RF TV Modulator Converter allows you to share your set-top boxes and DVDs with multiple rooms, providing convenience and flexibility when it comes to entertainment. [APPLICABLE TO GLOBAL TV FORMATS] This AV to RF TV modulator is suitable for global or external configurations using TV formats such as NTSC PAL B G, 1, D K, L M N. [FLEXIBLE TV FORMATS] The RF modulator supports PAL and NTSC formats, as well as IF, allowing users around the world to use it. Specifications:Element Type: RF Modulator Material: ABS RF Frequency Range: 471.25 MHz-885.25 MHz Channel Range: PAL: 21-69; NTSC: 14-83 Factory Default: Channel 21 (471.25 MHz) PAL TV Format: PAL NTSC Sound Carrier Frequency: 4.5 5.5 6.0 6.5 MHz Package List: 1 x RF Modulator 1 x USB Cable 1 x Manual How to use: 1. AV output on set-top box, DVR or DVD to AV input on transmitter box using a cable. 2. RF output for connection to the TV panel or directly to the receiving host using a coaxial cable. 3. Power supply: USB DC 5V, can be connected via any device with a USB port.