Due to New Year Holidays new orders are going to be processed after Jan 3, 2013 This is a PLL FM Stereo Audio Transmitter Module that can stereo-transmit voice/music signals wirelessly to FM Radios(Radio & Receiver). While generally used transmitters work on a single or several pre-determined frequencies, it can transmit any stereo signals of any frequency within the range of 88-108MHz. Miniature-sized to fit into any of your products, it is especially easy to install in electronic devices of compact size. It can serve as a miniature transmitter itself. Features Stereo transmission of all broadcast band(88-108MHz). PLL system guarantees good frequency stability. Miniature-sized(SMD Type), easy to apply to any of your products. Controllable from CPU(MCU). Works on a single voltage DC 3.3V. Manual