Features: Adopting advanced digital audios signal processing DSP and FM modulation phase-locked loop PLL, the sound is more realistic, stable, and there is no frequency deviation. LCD display screens are more intuitiveand accurate, with very low power consumption and minimal noise. Built in 30 digital volume adjustment buttons for easy operation. It can search for radio stations and store radio functions, making it easy to operate. Automatically shut down memory data before power outage. Automatic switching of speaker/headphone output Professional audios DSP audios signal analysis and processing, automatic quiet without signal or weak FM signal noise, awayfrom traditional FM radio signals or weak signals, without annoying rustling sound. The digital incremental rotary encoder has a good volume and frequency feel for adjustment, precise positioning, stability and durability, and no dead angles for 360rotation. Supportingserial communication control, using other computers or devices to control MCU modules, with full serialfunctionality. Specifications: Output power: 500mW (driving headphones) 3Wx2 (driving speakers) Frequency response: 50Hz-18KHz Receiving frequency: Turnoff campus radio at 87.0MHz-108.0MHz, Enable campus broadcasting at 76.0MHz-108.0MHz Equivalent noise: No less than 30dB Power supply voltage: 3.0V-5.0V Power supply current: 1000mA volume and 60mA at minimum volume (for reference) Note: Due to the light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 1PC DSP PLL Digital StereoFM Radio Receiver Module