51 Single Chip Laser Electronic Keyboard Electronic Manufacturing Kit

Product information:
Installation method: electric soldering iron welding tools
Application Field: diy welding practice
Power supply voltage: DC voltage 5V
PCB board size: 98.6mm * 40mm
1. There are 7 strings in total. When cutting the strings, the horn emits corresponding scales.
2. When cutting strings, the LED corresponding to the strings lights up.
3. Switch the three timbres of high school and low level through button
4. Play two music pieces stored through button (happy birthday, only mom is good in the world)