FM Transmitter Module

Br 550.00

I2C interface 5V TTL compatible
for Arduino plug and play
Onboard MIC
VCC Input: 3.0V ~ 5.0V
It is conceived audio interface, and used for microphone or audio wire signal.
Audio entrance signal regulating of amplitude and microphone regulating of sensitivity.
Wireless FM audio microphone stereo-transmission FM radio small power.
Antenna port on the board,Any metal line about 75cm can serves as an antenna.
FM range from 70-108 MHz

FM Transmitter Module V2.0 Digital FM Radio Module for Arduino Microphone Audio
This module could modulate your voice on the FM radio wave(70-108 MHz). And anyone who has a radio device could receive it.
which makes it very easy to build a tiny radio station.

you could wire them in the following way :
for Arduino connect with FM Module as below :