Sensor & Switch Magnets

Sensor magnets (also known as reed switches) are electrical switches operated by a magnetic field. They can be used to detect specific actions, like the opening of a door, and are widely used for electrical circuit control.

What are sensor magnets used for?

Sensor magnets can be used in door and window sensors, and are commonly found in burglar alarm systems. They're also widely used for communications. Once the magnet is pulled away from the switch, the reed switch will go back to its original position. A reed relay is when there are one or more reed switches inside a coil.

Why use sensor magnets?

Sensor magnets can be used to reduce current leakage. This is useful for applications in hazardous areas, for example where there's flammable gas in the area, or in medical devices. Sensor magnets are also useful in locations where it isn't possible to make direct contact with the switch, such as in explosive or toxic environments.


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Description Price Application Shape Diameter Length Width Height Dimensions
RS stock no. 765-9331
Mfr. Part No.MP201901
BrandZF
R 72.64
Each
units
Magnetic Proximity Sensor Rectangular - 28.58mm 19.1mm 6.35mm 28.58 x 19.1 x 6.35 mm
RS stock no. 765-9337
Mfr. Part No.MP201801
BrandZF
R 77.00
Each
units
Magnetic Proximity Sensor Rectangular - 23.01mm 13.97mm 5.99mm 23.01 x 13.97 x 5.99 mm
RS stock no. 765-9343
Mfr. Part No.AS201901
BrandZF
R 64.65
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS stock no. 765-9340
Mfr. Part No.AS201801
BrandZF
R 52.40
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS stock no. 765-9353
Mfr. Part No.CU103602
BrandZF
R 914.64
Each
units
Angular Position Sensor - - 57.33mm 48.3mm 17.7mm 57.33 x 48.3 x 17.7 mm
RS stock no. 765-9362
Mfr. Part No.CU103601
BrandZF
R 680.46
Each
units
Angular Position Sensor - - 57.33mm 48.3mm 17.7mm 57.33 x 48.3 x 17.7 mm
RS stock no. 765-9347
Mfr. Part No.MP200701
BrandZF
R 155.84
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - -