Features 1.2 CHANNEL TRANSMISSION: Transmitter module stereo transmitter IC support 2 channel FM stereo transmitter, or only mono input 2.76MHZ‑108MHZ FREQUENCY BAND: The transmission frequency covers China, Japan, and Europe FM frequency bands, adjustable from 78MHz to 108MHz, and the input volume is also adjustable 3.DEMODULATE SOUND AND PLAY BACK: Input coupling and signal coding, after accurate algorithm design, demodulate and play back the sound with first class performance no matter how high or low 4.EXCELLENT DISTORTION RATE AND SIGNAL TO NOISE RATIO: The sound quality is very good, the distortion rate and signal to noise ratio have reached the national standard, reaching the broadcast level standard 5.ACCURATE DISPLAY: With power off memory function, working frequency display, support to restore factory settings 6.ENERGY SAVING: Support wide voltage power supply, possess small working current, high luminous efficiency, durable power supply Specification Item Type: FM Transmitter Board Material: PCB Power Supply: DC 3.6V-15V Working Current: 17mA Shutdown Current: 30uA Package List 1 x FM Transmitter Board 1 x Antenna