Wireless long-distance transmission:The transmission distance of this model can reach 0-1KM. Depending on the product, the product can reach 15KM. Launching distance is adjustable:This machine is a professional machine, the transmission distance is adjustable from 0 to 1 km. It can be easily achieved by adjusting the power of the machine. Simple receiving equipment:The machine transmits FM stereo signals, which can be received by car radios, mobile phones, FM radios and other devices PLL phase-locked loop:Professional-grade PLL phase-locked loop circuit can make the transmitter work stably, and the transmission frequency never deviates! The radio never runs out of control Power off memory:The parameters used by the machine can be automatically saved after it is turned off and can be automatically read time it is turned on.No need to reset Working voltage: 12V. Working current: Less than 0.5A. Frequency range 76-108MHz. (Other frequencies can be customized in batches) Frequency step: 100KHz. Working temperature: -10-45. Transmitting power: 0.1/0.5W. (two levels adjustable) Harmonic and clutter radiation: 60dB. Audio distortion: 2%. Audio frequency response: 50Hz-15000Hz. Stereo separation: 35dB. Audio input level: 15dBV (adjustable). FM frequency deviation: 75KHz. Machine signal-to-noise ratio: 70dB. Pre-emphasis: 50uS. Supporting antenna impedance: 50. The ideal launch distance of the machine is 0-1KM (The product appearance and printed words depending on the batch, but this does not affect use) Voltage: AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Color: As shown Material: plastic Package Contents: 1pcs x Stereo FM transmitter 1pcs adapter 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.