I have just bought a HY-M285 SSR that I want to allow a 12V DC signal to control a 240V AC mains signal. I'm using this to let the 12V output from my amplifier switch my active sub-woofer on and off.
The AC side of the relay is trivial - it's just two screw terminals. Unfortunately, the DC side has three terminals, labelled DC+, DC- and CH1. So, my question is: how do I connect the 12V control signal? I've tried across DC+ & DC- with no effect.
Do I need to construct a voltage divider, to push (say) 5V through the CH1 connector, as well as the DC+/- inputs? Or can I get away with something much simpler - e.g. +12V direct to CH1?
Apologies for the lack of detail but the module doesn't include any documentation whatsoever, so I'm hoping that someone here may have prior experience.