The MP2018 series of sensors from Cherry are reed based magnetic position sensors in a mini plastic flange mount package. These switches can be approached by a magnet from any angle and with either pole.
SPST-NO Form A
10 W max. power rating
Contacts hermetically sealed for long life
Zero power consumption
Resistant to moisture and dirt
Operating temperature -40 → +105 °C
Magnetic actuator is available (stock no 765-9340)