Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 1. the of advanced digital audio signal processing (DSP) and 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 , with a very low consumption and noise, Can search for radio stations and store radio function, easy to operate 3. -in 30 digital volume adjustment button operation can be easily done, automatic - memory data before the 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 signal noise floor of the big time, from the radio signal or the signal is weak in the absence of annoying when rustle, digital incremental encoder to adjust the volume and frequency of feel good, precise positioning, stable and durable, 360 without dead ends 5.30-level digital volume adjustment range, Support for serial communication control, other computer or device control MCU module with serial full functionality Product parameters: Output : 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: greater than equal 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 * Radio Receiver Module Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.