Package Included:
35 X PAM8403 Audio Amplifier Module
Specifications:
1.Operating voltage: 2.5V-5.5V
2.Maximum output power: 3W*2(5V 4O)
3.Length: 29mm
4.Width: 20mm
5.Overall height after installed is about 16mm.
Note:
please make sure the power supply is not more than 5.5V and
please don't do reverse polarity for "+" and "-", or else, it will burn the board.