FM Radio Transmitter Module V2.0 Signal Receiver FM 70-108MHz For Building Your Own Radio Station  

Description:

It is designed audio interface, and used for microphone or audio signal cable.
It is voltage chip, the voltage is wide and stability.
It is convenient for set frequent and input signal with five buttons.
The input audio signal amplitude adjustment and microphone sensitivity adjustment.
FM wireless microphone audio stereo - forwarding FM radio small power.

Features:

•I2C interface 5V TTL compatible
•Arduino plug and play
•onboard MIC
•VCC Input: 3.0V ~ 5.0V
•Connection: If is very easy to connect it with Arduino if you have Arduino Sensor Shield V6.
•If you don't have sensor shield, you could wire them in the following way:
Arduino FM Module
GND --------------GND
5V -----------------VCC
SDA ---------------SDA
SCL ---------------SCL
Then connect the antenna.
Any metal line about 75cm can serve as an antenna.
•Arduino Coding: We explain more about the code in the manual. Please refer to the manual for more information.
•Download the library and upload the example sketch to Arduino.
•Open the Serial Monitor (as the last photo shows)
•Then, just turn out your radio device and set it at FM 90MHz, and enjoy it!