Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•The speaker protection board has a turn-on function with a power-on delay of about 3 seconds
•The circuit of the board is simple, the work is safe and reliable, with an LED indicator, which lights up when working.
•Using high-power relays, suitable for most 2.0 dual-channel power amplifier boards.
•The protection board uses two 10A relays as switches, which can be effectively controlled.
•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.
From USA
