Speaker protection board with power-on delay (about 3 seconds ) and DC protection (starting control voltage about 1V ) function
With LED lights instructions, the light keeps on during the protection, the light is off when normal work . relay, suitable for most of the power amplifier board.

Working voltage AC: 12-18V, need independent power supply.

Speaker protection requires independent winding power supply, and other circuits can not share power.

Note: BTL circuit need to use two sets

Packing List:

1Pc x 2.0 speaker protection board