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OtterNas3 On the back of the Buttons you have markers in the black plastic for "+" & "-" these are ment for the LED The other 2 will be the pins for the line you like to trigger The button is a "momentary" push button so: ON as long as pushed / OFF on release The LED's should be driven on 3V as there is no resistor included in any way (LED's are usually 2.2-3.2V) 6 of my buttons LED died at 5V already! Hope this helps
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