2 wires cylindrical plastic magnetic reed| Alibaba.com
Fundamentals of magnetic sensors: differences between AMR sensors (magnetic switches) and reed switches | Basic Knowledge of AMR Sensors (Magnetic Switches) | Murata Manufacturing Co., Ltd.
Manufactures of heavy duty reed switch sensors, miniature reed switch sensors, industrial reed sensors, IP67 reed switch sensors, IP67 security switches, automotive switches and automotive sensors. Arun Electronics Ltd UK
Reed Switch Proximity Sensor | How it works, Application & Advantages
AG-01 Magnetic Cylinder Pneumatic Reed Switch Sensor | by ALIF | Medium
Magnetic Sensor Reed Switch (Standard Type or Large-Volume Type)