Operating voltage: 2.5V-5.5V
Maximum output power: 3W*2(5V 4Ω)
Overall height after installed is about 16mm.
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.
1 X PAM8403 5V 2 Channel USB Power Audio Amplifier ModuleBoard 3Wx2 Volume Control