CK - 1NO Printed Circuit Board Push Button Switch - Black - KS11R22CQD ("KS11R22CQD", "KS11R22CQD")
TB371*8 8pcs Push Button Switch 4 Keyboard Module key Board Button for DUE Breadboard Leonardo ZERO Tre Micro banana pi Zigbee|button led|button fabricbutton china - AliExpress
Universal 4 Key Push Button Switch Module Keyboard Board for UNO - buy from 2$ on Joom e-commerce platform
Pololu - Mini Pushbutton Power Switch with Reverse Voltage Protection, LV
I/O Switch/Push Button Board - 8 push-buttons/slide-switches/LEDs for Ether I/O 24 & USB I/O 24 ($37.66) : Saelig Online Store
Push Button Switch PCB 8x8 mm, H:5.5 mm, 6P, 2x (ON)-OFF, 0.1A/