Can use the computer USB port, USB power bank or a mobile phone charger to supply the 5V support power, Battery power can also be used Provides 3W (left channel) + 3W (right channel) output power into a 4 speaker load and 5V power supply Integrated power switch and volume control (turn knob fully counter-clockwise to turn off) Module has short-circuit current protection, under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C)
Package Includes: 2PCS PAM8403 Class D Stereo Audio Power Amplifier Module with Volume Control Potentiometer