This stereo speaker protection prevents switch-on clicks and DC components on the output of the amplifier connected.
Specifications:

1. switch-delay: ± 6 seconds
2. DC protection: +1V/-1V
3. max. input voltage: 200Vpp + DC
4. max. switching current: 10A
5. LED indication for: WAIT (switch-on delay) and ERROR (DC on speaker output)
6. supply voltage: 220VAC
7. PCB dimensions: 55 x 125mm / 2.2 x 4.9"

infosheet_k4700_mono.pdf

infosheet_k4700_stereo.pdf

illustrated_assembly_manual_k4700.pdf

assembly_manual_k4700.pdf

resistor_colour_code.pdf

module_diy_kit_guide.pdf