Features: 1. Adopts the advanced technology of DSP and FM modulation PLL, ensure less sound distortion to make sound more realistic, more stable performance, long working hours without frequency offset. 2. LCD display is more intuitive and accurate, and has very low power consumption and tiny noise interference. 3. 30 range digital volume adjustment, can be easily operated with keystrokes. Automatic memory data before the power failure. Automatically switched speaker and receiver output. 4. Adopts quartz crystal frequency stabilization, the temperature change is no longer receiving frequency drift. 5. The professional audio DSP audio signal analysis and processing, automatic mute no signal or weak when FM signal noise, get rid of traditional FM radio in the absence of signal or weak signal when annoying rustling. 6. Adopt digital incremental encoder to adjust the volume and frequency, sensitive operation, precise positioning, stable and durable, 360 degree rotation without dead ends. 7. Support for serial communication control, able to use computer or MCU module device can control all functionality. Specification: Material: PCB Color: Green Output Power: 500mW (Actuate Reciver), 3Wx2 (Actuate Speaker) Frequency Range: 50Hz-18KHz Receiving Frequency Range: : Close the Campus Radio: 87.0MHz-108.0MHz Open the Campus Radio: 76.0MHz-108.0MHz Equivalent Noise: Greater than Equal 30dB Supply Voltage: 3.0V-5.0V Channel: Stereo Supply Current: Maximum Volume 1000mA, Minimum Volume Under 60mA (for Reference Only) Package List: 1 x Radio Module 1 x Acrylic Shell 2 x Screw Kit