12v Trigger Power


Novice Member
Get a 12v trigger relay from eBay which caters for 230/240vAC and connect it to your amp. When the 12v triggers, it will turn on/off the relay in turn powering your amp. Nice and simple.


Active Member
Hi guys, hope it's okay to borrow the topic since my question is related.

I want to start some colling fans in my hushbox from my PJs 12V trigger output. I have this relay:

Dc 12V 4 Channel Relay Module with Optocoupler H/L Level Triger for Arduino | eBay

I also have a 12V PSU for the fans. I know how to wire it but I'm unsure about the jumper settings and how to set them, actually I'm not sure if I need to worry about them at all. Could someone advice?

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