FM Radio Transmitter 5 to 15 Watts Adjustable Output Low Power Broadcast Announcements

5W/15W Wireless Blue tooth FM Radio Transmitter Mini Radio Stereo Station Broadcast + Power + Antenna Retekess TR502 Features: 1. Aluminum alloy metal shell, good heat dissipation 2. Transmission frequency can be set from within the range of 87-108MHz 3. 5W/10W low-high power adjustable, transmission distance of 2-3 km (1.2-1.8 mi) in the open air 4. High-fidelity Bluetooth: you can connect wirelessly to mobile phones, tablets and other Bluetooth devices as an audio input 5. Audio input volume and microphone volume can be adjusted separately 6. Channel switching: switchable stereo, mono 7. 1/4 wavelength of strong magnetic sucker antenna, can be tightly adsorbed on the car roof or any metal flat objects, easy to move the antenna to the outside, the roof, balcony or window, more effective transmission of electromagnetic waves! Specification: FM Transmitter Frequency range FM:87-108MHz Frequency step 100Khz Frequency stability ±10PPM Frequency stabilization met