DC 5-34V CS8683 Digital Power Amplifier Board High Power Mono 130W Amplifier

Modbus Rtu 1/2/4 Channel 7-24V Relay Module Switch input output RS485/TTL UART-

DC5V-34V CS8683H Digital Amplifier Board 130W High-Power Amp Module BTL Output

Stereo Audio Signal Mixer Board Mix 2way 4way Input 1way Output 3.5mm DC 5V-12V

TPA3116D2 BTL Mono 100W Digital Power Amplifier Board With Volume Adjustment

TPA3116 Mono Channel Digital Power Audio Amplifier Board BTL Out 100W DC 12V-24V

TPA3116D2 DC 5-24V Digital Power Amplifier Board Volume Adjustment BTL Mono 100W