1 Speaker protection board, the circuit is simple, safe and reliable, and easy to use. 2 Has the functions of start-up delay (about 3 seconds) and DC protection (control voltage about 1V). 3 With LED light indication, it lights up when working, and goes out when the protection starts. 4 Working voltage AC12-18V, independent power supply is required, otherwise, the power amplifier board may be damaged. 5 Withstand power 50W-300W, using high-end relay, suitable for most power amplifier boards.
What's in the box
1 x Relay Module Board
