Are you replacing a defective relay with this board? You need to connect the board to +5volts on the vcc connection, -5volts on the common connection, and the signal to the appropriate relay , then one lead of the torch would attach to the common ( center screw) on the relay you choose and the other torch lead would attach to the no connection on the same relay
I am adding the relay board for the THC add on I’m doing and I’m trying to replace the original crappy little relay at the same time.
Oh, ok. Now I get it. Did you figure out how to make the connections?