@B.Will Thank you for your help. Based on your comments, I tried playing audio and I was not getting any sound. The DAC is getting enough power from the USB port on the computer to have the power...

@B.Will The blue LED is off, and the app also shows the plug as off. I've also verified that the relay clicks when switching it from on to off.

I just purchased the HS105-KIT, and am having some issues. I have two devices I'm trying to automate. One is a DAC (24V/4.75A), and the other is a Subwoofer. Both devices are still powered on when...