Want to add proxy switches for travel limit

Looking at the option of adding Omron TL-Q5MC1 proximity switches for travel limit rather than simple snap contact switch, but am unsure if a PNP switch will work with the board. I am using a NOVUSUN NVCM6V2.1 Bought on Amazon. Will a PNP sensor work with this board?

Like many of these Chinese units, the documentation is lousy!
I could not find out if they were sink or source inputs, it just says 'Programmable'??
Al.

Have a look at your current snap contact switches. If they connect the input to negative or zero, then I would use NPN. If they connect the input to a positive voltage I would use PNP.
NPN makes a connection to the Negative wire of the sensor.. PNP makes a connection to the positive wire of the sensor.

Quote:

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Originally Posted by Toinvd

Have a look at your current snap contact switches. If they connect the input to negative or zero, then I would use NPN. If they connect the input to a positive voltage I would use PNP.
NPN makes a connection to the Negative wire of the sensor.. PNP makes a connection to the positive wire of the sensor.

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Thanks, as it turns out, the board does use the negative side. Your response cleared it up for me.