- the relay be linked to various power amplifier boards.
- both 2.0 two channel and 2.1 three channel be equipped with blue light power indicator and voltage regulator circuit.
- speaker protection board, high power relays using high power relays, suitable for most 2.0 dual channel power amplifier boards.
- the speaker protection board has turn 8209 on function with power 8209 on delay of about 3 seconds.
- the circuit of the board is simple, the work is and reliable, with an LED indicator, which lights up when working.
