บอร์ดป้องกันรีเลย์ลําโพง แบบพกพา Ac 12-18V 2.0

Note: 1.The DC protection can't work with the Digital Power Amplifier board or BTL Circuits 2.The horn protection board has the functions of power-on delay (about 3 seconds) and DC protection (control voltage is about 1V). The board circuit is simple and safe and reliable. 3.With LED light indication, it lights up when working, and it is extinguished when protection starts. It adopts double parallel OMRON relay, which is suitable for most power amplifier boards. Operating voltage AC: 12-18V, independent power supply is required. 4.This protection board is powered by AC 12-18V.It must be powered by a separate power supply. Otherwise, the power amplifier board may be damaged. Specification： Voltage input: AC12-18V Can withstand power: 50W-300W Protection board size: 68 * 55 MM Package included： 1*Speaker Protection Board