1. Using high-quality materials, the quality is guaranteed 2. Two-channel stereo FM radio module FM receiver module 3. High sensitivity 4. Small size and beautiful appearance. Wide range of applications 5. Power supply: DC2.8V to 12V. Working current: 24mA. Shutdown current: 30uA (static power consumption). Receiving frequency range: 76.0MHz-108.0MHz Sensitivity:1.3uV Volume:9 levels,0 mute, 8 loudest Output:Can directly drive common earplugs.Can be directly connected to amplifier input Frequency and volume have power-off memory function. Power on automatically,press and hold the V-key to turn off,after turning off,press any key to turn on Instructions for use: 1. Short press the F+ key to search for the radio station upwards. After the station is found, it will stop and play the station. Press and hold the F+ key for a long time, the receiving frequency will increase in steps of 0.1MHz. 2. Short press the F-key to search down the radio station. When the station is found, it will stop and play the station. Long press the F-key and hold, the receiving frequency will decrease in steps of 0.1MHz. 3. Short press the V+ key, the volume will increase by one level, there are 9 levels in total, level 8 is the maximum, level 0 is mute. Long press the V+ key to restore the factory default parameters, the frequency is 99MHz, and the volume is at 6 gears. 4. Short press the V-key, the volume will decrease by one level, there are 9 levels in total, level 8 is the maximum, level 0 is mute. Press and hold the V-key to power off. Note:Due to different production batches, there are differences in appearance label printing, which will not affect the use. Colour:Green Material:Plastic Package Contents: 1 x FM Radio Module Only the above package content, other products are not included. Note: Light reflection 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.