1.Introduction:

• It is a Blue LED Spectrum FM/Bluetooth Audio Speaker DIY Kit.
• It has 10pcs blue LED music spectrum display.
• It can play music form Bluetooth, FM, TF Card, U-disk with 4ohm 3W speakers.
• It is a very interesting DIY electronic product which enables users to understand the circuit more clearly and learn soldering skills.

2.Feature:

• 4 Audio Input Methods: It can get audio from Bluetooth, FM, U-disk, TF card in 4 different methods which can meet the application needs of different scenarios. User can switch audio source as needs by press MODE button. Equipped with a standard 75cm FM antenna to enhance the stability of the FM signal.

• Battery charging protection: It is equipped with 18650 rechargeable battery box for offline outdoor use. Built-in battery charging protection board to protect battery charging and discharging and prolong battery life.

• Dual-channel stereo 3W: Built-in 3W power amplifier module which can drive 4ohm 3w speakers directly. Stable output with high fidelity music quality.

• Adjust playing status: It can adjust playing volume by keep press V+ and V- buttons. And change Next and Previous musics by short press V+ and V- buttons. Then press the second button to play or pause music.

• DIY Fun: It is a DIY electronic welding kit, the user receives the most basic components, not only allows you to learn and practice electronic welding skills, but also experience the music fun brought by FM/Bluetooth

3.Parameter:

• Product Name:Blue LED Spectrum FM/Bluetooth Audio Speaker DIY Kit
• Work Voltage:DC 3.7V~5V
• Speaker: 4ohm 3W
• Suitable battery:18650 Rechargeable Lithium Battery(No included)
• Battery charging protection:Yes
• Battery discharging protection:Yes
• Audio source:Bluetooth/FM/U-disk/TF card
• Antenna: 75~250mm professional antenna
• Work Temperature:-20℃~85℃
• Work Humidity:5%~85%RH

4.Installation Manual:

• Please download the documentations.