arduino uno - Newbie Question with 4 pin button - Arduino Stack Exchange
6x6x1 Push Button 4-Pin
MOMENTARY TACT TACTILE PUSH BUTTON SWITCH 4 PINS B3F-4055 12 X 12 X 7.3MM
is a two pin button the same as the arduino four pin button? - General Electronics - Arduino Forum
Straight Pins Button Switch 4 Pin 12*12 / 2 Open 1 Close / 2 Open 2 Close / Two Open One Close - Buy Miniature Minitype Flashlight Switch Desk Lamp Table Reading