Features 1、The speaker protection board has a turn-on function with a power-on delay of about 3 seconds 2、The circuit of the board is simple, the work is safe and reliable, with an LED indicator, which lights up when working. 3、Using high-power relays, suitable for most 2.0 dual-channel power amplifier boards. 4、The protection board uses two 10A relays as switches, which can be effectively controlled. 5、The relay can be linked to various power amplifier boards. Both 2.0 two-channel and 2.1 three-channel can be equipped with blue light power indicator and voltage regulator circuit. Specification Item Type: Speaker Protection Circuit Board Material: Synthetic cardboard Purpose: Protect speakers, power amplifier board Current: 10A Package List 1 x Speaker Protection Circuit Board