Normally Open 2*10 MM Magnetic Reed Switch Normally Open 2*10 MM Magnetic Reed Switch [RKI-2502] - ₹21.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits
Magnetic Door Switch Set - COM-13247 - SparkFun Electronics
D-Z73 Magnetic Reed Switch Proximity Sensor | JAARIS Automation
SPST Surface Mount Mini Magnetic Reed Switch - Altronics
DIY 3mm Magnetic Switch with 2 Micro Magnets | Brickstuff