1. +PLL Technology Makes The Frequency More Stable And The Frequency Does Not Drift With Environmental Changes.2. No Adjustments Are Required, Bringing Diy Fun To Beginners. 3. The Frequency Can Be Continuously Adjusted Within The Specified Range.4. It Has A Microphone Input Interface And Can Control The Microphone Volume Through A Digital Potentiometer. 5. Digital Potentiometer Audio Input, Adjustable Volume. The Output Grid Has A Very Good Suppression Effect On Harmonics, Making The Output Spectrum Cleaner. Set The Frequency And Volume Of The Power-Off Protection, And You Don'T Need To Set It Again Next Time You Turn It On! Description:1. Input Voltage: DC12V.2. Input Current 3.0A.3. Audio Signal: The Maximum Input Vpp Is Less Than 1v.4. Microphone Type: Cylinder Microphone Or Microphone.5. Output Power: 15W.6. Output Impedance: 50.7. Working Frequency: 76 Meters-108 Mhz 8. Frequency: 0.1Mhz.9. Deformation Degree: 0.03%~0.1%.10. Fireproof Board Size: About 150x 60mm(Excluding Fins).11.Control Panel: About 58x36mm.12. Launch Distance: More Than 8 Kilometers (Provided That The Launch Is In An Open Field).13. Stereo Separation: 63 Decibels Note:This Kit Is A Required By Beginners. There Is Basically No Debugging, And The Debugging Difficulty Is Basically 0. It Can Be 100% Successful As Long As You Follow The Correct Welding Operation. Whether You Are A Or A Newbie, You Can Enjoy The Diy Fun Of Fm Publishing With The Least Cost! As For Repair Welding, We Don'T Have To Worry Too Much. The Capacitor And Resistor Strips Used In This Set Are All In 0805 Packages. The Welding Board And Plug-In Are The Same. This Transmitter Must Use A 50 Ohm Antenna With A Frequency Of Approximately Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not AffectThe Use color:As shown Material:PCB Package Contents: 1x15W FM stereo phase-locked FM transmitter module 1xLCD screen 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.