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 offset2. LCD display is more intuitive and accurate, with a low power consumption and noise, Can search for radio stations and radio function, easy to operate3. 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 drift4. 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 ends5.30-level digital volume adjustment range, Support for serial communication control, use other computer or device control MCU module with serial full functionalityProduct parameters: Output power: 500mW (drive headphones), 3W x 2 (driving the speaker)Frequency range: 50Hz-18KHzReceiving frequency range: the campus radio 87.0MHz-108.0MHz,Open campus radio 76.0MHz-108.0MHzEquivalent noise: 30dBSupply voltage: 3.0V-5.0VSupply Current: maximum volume 1000mA, minimum volume at 60mA (for reference only)Channel: StereoMaterial:Metal + pccolour:greenPackage Contents:1 * FM Radio Receiver ModuleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.