Features Advanced digital audio signal processing (DSP) and FM phase-locked loop modulation technique (PLL) ensure less sound distortion and more stable performance LCD display is more intuitive and accurate, and has very low power consumption and tiny noise interference Using quartz crystal for frequency stabilization, and receiving frequency will not drift when temperature changes Using professional audio DSP to process and analyze audio signal, auto mute when there is no signal or week signal as big FM base noise, in order to get rid of the annoying rustle of traditional FM radio Using incremental digital 360° rotating encoder to adjust volume and frequency, which is accurate, stable, durable, and also offers comfortable hand feeling Features:30-class digital volume adjustment range.Support serial communication control, so you can use computer, MCU and other equipment with serial port to control module. Specifications: Output Power: 500mW (drive earphone), 3Wx2 (drive speaker) Frequency Response: 50Hz to 18KHz   Receiving Frequency Range: 87.0MHz to 108.0MHz(close campus broadcast), 76.0MHz to 108.0MHz(open campus broadcast) Equivalent Noise: ≥30dB   Input Voltage: DC 3V to 5V Input Current: 1000mA at maximum volume, 60mA at minimum volume (for reference only) Channel: Stereo Size: 75 x 45 x 30mm / 2.95 x 1.77 x 1.18"Screen Size: 25 x 16mm / 0.98 x 0.63" Package Includes:1 x Module (Antenna is not included) Package List