<p>Product name: Mono 100W Bluetooth audio amplifier board module</p> <p>Model: -1001B</p> <p>Power amplifier chip: TPA3116D2</p> <p>Bluetooth version: 5.1</p> <p>Bluetooth transmission distance: 15 meters</p> <p>Audio input: Bluetooth+AUX+USB stick+USB sound card</p> <p>Audio output: mono 100W</p> <p>Adapted power supply: DC7-24V, 4A (AC is not allowed)</p> <p>Adapted horn: 20-100W, 3-8 </p> <p>Volume adjustment: total volume with button, click: play\/pause; Double click: next song; Three strikes: enter or exit TWS mode; Long press: turn off\/on</p> <p>Protection mechanism: input anti-reverse connection, over-temperature, over-current, short circuit, anti-static protection</p> <p>Features: support Wuzhi audio app. Modify the Bluetooth name, password settings, prompt tone volume adjustment, on\/off prompt tone, sleep aid, firmware upgrade, and so on. matching function and the true wireless function make the two sets of speakers can be combined to form a left and right channel box matching, with a stronger sense of spatial positioning.</p> <p>Product size: 89 x 45 x 20mm</p> <p>color:Black</p> <p>Material:PCB+metal</p> <p>Package Contents:</p> <p>1 x amplifier board</p> <p>1 x DC adapter</p> <p>1 x screwdriver</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>