1. the use of advanced digital audio signal processing (DSP) and FM modulation phase-locked loop (PLL) to make sound more realistic, more stable performance, long working hours without frequency offset 2. LCD display is more intuitive and accurate, with a low power consumption and noise, Can search for radio stations and radio function, easy to operate 3. Built-in 30 digital volume adjustment button operation can be done, automatic power-down memory data the power failure,speaker / headphone output automatic switching, quartz crystal frequency stabilization, the temperature change is no receiving frequency drift 4. The professional audio DSP audio signal analysis and processing, automatic mute no signal or weak FM signal noise floor of the big time, from the FM radio signal or the signal is weak in the absence of annoying when rustle, digital incremental encoder to adjust the volume and frequency of use feel good, precise positioning, stable and durable, 360 rotation without dead ends 5.30-level digital volume adjustment range, Support for serial communication control, use other computer or device control MCU module with serial full functionality Product parameters: Output power: 500mW (drive headphones), 3W x 2 (driving the speaker) Frequency range: 50Hz-18KHz Receiving frequency range: the campus radio 87.0MHz-108.0MHz, Open campus radio 76.0MHz-108.0MHz Equivalent noise: 30dB Supply voltage: 3.0V-5.0V Supply Current: maximum volume 1000mA, minimum volume at 60mA (for reference only) Channel: Stereo Material:Metal + pc colour:green Package Contents: 1 * FM Radio Receiver Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.