I have one of these.

I have one of these.
(Except I payed only 19eur for it.)

Everything works fine (as long as you are on the first page in @Mach3 ).
…except the E-Stop button.
Any idea how to find out what key-code that button sends and how to remap that key to e-stop in MACH3?
(I also have hardware e-stop buttons, don’t worry. It’s just that I don’t like having an e-stop that doesn’t work…from a safety point of view.)
http://www.ebay.de/itm/4-Axis-handhaben-Fernbedienung-Keypad-Control-fur-CNC-Frasmaschi-Mach3-only-/281049071130?pt=Industriemaschinen&hash=item416fd47e1a