Note:
Power supply voltage shall not exceed the supply voltage range of this module.
Avoid contact with the back of the module while it's working, so it can function smoothly and prevent short circuit.
Avoid local radio transmission frequency to prevent interference affecting transmission range of this module.
FM radio works with the transmitter to achieve the desired effect. It's important to choose a quality radio, because, to a large extent, it will decide the receiving distance and the sound quality.
This module needs to be installed in the circuit board, and good wiring is required. Therefore, users must have a good knowledge of electronics.

Specifications:
Material: PCB
Output power: 100mW
Audio Frequency Response: 50Hz-18KHz
Transmission frequency: 87.0MHz-108.0MHz
Modulation modes: standard FM radio
Channel: LINE / USB channel (stereo), MIC channel (mono)
Equivalent Noise: >30dB (sound close to CD quality)
Supply voltage: DC 3.0V-5.0V
Working Current: 35mA
Transmitting antenna: 75cm telescopic antenna
Transmission Distance: 75cm standard whip antenna connection, Radio Tecsun PL-660, measured 100 meters of open land.
Item Size: 6 * 2.8 * 1cm / 2.36 * 1.1 * 0.39in
Item Weight: 12g / 0.42oz
Package Weight: 12g / 0.42oz
Package Size: 9 * 6 * 2cm / 3.54 * 2.36 * 0.78in

Packing List:
1 * Stereo Transmitter Module