Features AUTO TURN-ON :The speaker protection board has a turn-on function with a power-on delay of about 3 seconds LED INDICATED: The circuit of the board is simple, the work is safe and reliable, with an LED indicator, which lights up when working. SAFETY USE: Using high-power relays, suitable for most 2.0 dual-channel power amplifier boards.Modular relay board uses OMRIN original high-current relay as the core device, which is not afraid of contact ignition and oxidation, so there is a certain safety guarantee POWER SUPPLY SCOPE:The protection board uses two 10A relays as switches, which can be effectively controlled. . The power supply has a wide range of AC12V to AC18V, which can be adjusted by itself, which is very convenient. WIDELY USED: 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 Working Voltage: AC12-18V Current: 10A Package List: 1 x Speaker Protection Circuit Board Package List 1 x Speaker Protection Circuit Board