Come on now, What kind of design is that? An input pin to a CMOS device that is at least 12 feet long with nothing more than a pullup resistor of 10K? Well actually 24 feet long, I forgot the return path. If it is to be a robust design then allow some current to flow in the remote switch circuit by means of an led for an OPTOISOLATOR in series with the switch. Think about it? Even with a 10K pullup resistor and a schmitt trigger, with a 3.3 volt VCC the switching voltage threshold is at best 1 volt.