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Message: <blockquote data-quote="Sral" data-source="post: 10406260" data-attributes="member: 194273"><p>You should probably measure the voltage on those contacts against ground, just to see which are Normally Closed and Which are Normally Open and if they are even connected to something in the first place. </p><p>Upside to this is you could measure that with two hands, one measurement syringe fixed on Ground, one measurement probe on the contact and an isolated screwdriver to push the button.</p><p></p><p>For testing, you could then short the normally open ones and see of the controller reacts.</p><p></p><p>I'm not sure if Bipolar transistors (npn and pnp) are the best solution for this, as they require more of an electrical connection in my understanding (you need to drive current through). A n-channel MOSFET (and if you require both contacts, a p-channel one as well) will do much better, as it doesn't require as much connection if I'm not mistaken (you only need to supply voltage and a bit of current to charge the gates).</p></blockquote><p></p>

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