KY-004: BUTTON MODULE EXPLANATION OF ALL THE FUNCTIONS - YouTube
2X12mm Big Key Module Big Button Module Light Touch Switch Module with Hat High Level Output for Arduino or Raspberry Pi 3 - China Sensor Module, Big Key Module | Made-in-China.com
Keyestudio Digital Push Button Switch Module Compatible with Arduino , 1,95 €
Amazon.com: 5pcs 12X12MM Big Key Module Big Button Module Light Touch Switch Module with hat High Level Output for arduino or Raspberry pi 3 : Electronics