Can be powered via a computer USB port, a USB power bank, or a mobile phone charger to supply the 5V support power; battery power is also an option Delivers 3W (left channel) + 3W (right channel) output power into a 4 speaker load with a 5V power supply Features an integrated power switch and volume control (turn the knob fully counter-clockwise to power off) The module includes short-circuit current protection, under-voltage lockout, and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C)
Package Contains: 2PCS PAM8403 Class D Stereo Audio Power Amplifier Module with Volume Control Potentiometer