Mini Reed Switch Module Arduino Compatible | Wiltronics
5pcs 12x12mm Big Key Module Big Button Module Light Touch Switch Module With Hat High Level Output For Arduino Or Raspberry Pi 3 - Integrated Circuits - AliExpress
KY-021 Magnetic Reed Switch Module - hit.ps
Keyes KY-017 Mercury Switch Module For Arduino
Tilt Switch Sensor Module For Arduino, UNO Mini Limited Edition at Rs 70/piece in New Delhi
Interfacing Touch Switch Module with Arduino - Electropeak