DSP PLL LCD Digital FM Stereo Radio Receiver Module With Serial Control : Application of advanced digital audio signal processing (DSP) and phase loop FM modulation (PLL) to make the sound more realistic, more stable, long working without frequency shift LCD display is more intuitive and accurate, very wear and minimal noise Can search for radio stations and store function , easy to operate Built-in 30 digital volume control buttons can be easily done Automatic shutdown of data memory before power failure Automatic switching of speaker/headphone output Quartz Crystal Frequency Stabilization Professional and DSP audio signal processing, automatic mute without signal or poor FM signal noise level away, away from traditional FM radio signal or signal is weak annoying rustle Digital incremental rotary to adjust volume and frequency of use feels , precise positioning, stable and durable, ° rotation without dead ends 30-level digital volume control range Support serial communication control, use MCU module for computer or device with serial full functionality Specification: Output Power: 500 (Driven Headphones), x 2 (with Speaker) Frequency Range: 50 Hz - 18 Frequency range of reception: Close campus 87,0 MHz-108,0 MHz, Open radio campus 76,0 MHz - 108,0 MHz Equivalent noise: ≥30dB Supply voltage: 3,0 V-5,0 V. Channel: Stereo contains: 1 x FM Digital Stereo Receiver Module