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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Viewing 1 - 20 of 57 products
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Description Price Application Shape Diameter Length Width Height Dimensions
RS Stock No. 536-1710
BrandRS PRO
MYR4.89
Each
units
Transducer Cylindrical 4 mm 19mm - - 4 x 19 mm
RS Stock No. 339-768
BrandRS PRO
MYR35.48
Each
units
Magnetic Proximity Switch Rectangular - 38mm 10mm 25mm 38 x 25 x 10 mm
RS Stock No. 361-4927
BrandRS PRO
MYR15.83
Each
units
Proximity Switch Rectangular - 32mm 8mm 15mm 32 x 8 x 15 mm
RS Stock No. 285-245
BrandRS PRO
MYR29.07
Each
units
Proximity Switch Rectangular - 32mm 24mm 10mm 32 x 24 x 10 mm
RS Stock No. 361-7011
BrandRS PRO
MYR14.27
Each
units
Proximity Switch Cylindrical 11 mm 28mm - - 11 x 28 mm
RS Stock No. 536-1732
BrandRS PRO
MYR7.72
Each
units
Transducer Rectangular - 20mm - - -
RS Stock No. 811-0745
BrandRS PRO
MYR9.61
Each
units
Linear Actuator Rectangular - 32mm 13mm 8mm 32 x 13 x 8 mm
RS Stock No. 536-1748
BrandRS PRO
MYR10.88
Each
units
Transducer Rectangular - 28.6mm 19mm 6.3mm 28.6 x 6.3 x 19 mm
RS Stock No. 822-4689
Mfr. Part No.GLS-M1
BrandOmron
MYR64.07
Each
units
Proximity Sensor Rectangular - 50mm 10mm 14mm 50 x 10 x 14 mm
RS Stock No. 289-7812
Mfr. Part No.PSM BLK
BrandAssemtech
MYR19.18
Each
units
Proximity Switch Rectangular - 30mm 7mm 20mm 30 x 7 x 20 mm
RS Stock No. 613-8202
Mfr. Part No.MMPSM
BrandAssemtech
MYR11.69
Each
units
Door Switch, Linear Actuator, Security System Switch Rectangular - 20mm 6mm 14mm 20 x 6 x 14 mm
RS Stock No. 765-9340
Mfr. Part No.AS201801
BrandZF
MYR13.52
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS Stock No. 765-9331
Mfr. Part No.MP201901
BrandZF
MYR18.81
Each
units
Magnetic Proximity Sensor Rectangular - 28.58mm 19.1mm 6.35mm 28.58 x 19.1 x 6.35 mm
RS Stock No. 791-8557
Mfr. Part No.MWR0032KAC-KH
BrandSensitec
MYR21.30
Each
units
MagnetoResistive sensor Round 20 mm - 3.5mm - 20.44 x 3.5 mm
RS Stock No. 765-9343
Mfr. Part No.AS201901
BrandZF
MYR18.44
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS Stock No. 289-7856
Mfr. Part No.PRM
BrandAssemtech
MYR4.13
Each
units
Reed Switch Cylindrical 6 mm 18mm - - 6 x 18 mm
RS Stock No. 331-8168
Mfr. Part No.RSH01
BrandAssemtech
MYR4.67
Each
units
Filter, Reed Switch, Tachometer, Transducer Rectangular - 12.7mm 1.57mm 3.17mm 12.7 x 1.57 x 3.17 mm
RS Stock No. 765-9347
Mfr. Part No.MP200701
BrandZF
MYR44.64
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - -
RS Stock No. 917-2668
Mfr. Part No.PLC10040
BrandCelduc
MYR73.16
Each
units
Magnetic Proximity Sensor Rectangular - 32mm 6.8mm 15mm 32 x 15 x 6.8 mm
RS Stock No. 784-0022
Mfr. Part No.DM60-31-15
MYR55.78
Each
units
Magnetic Sensor Round 31 mm - - 15mm 31 (Dia.) x 15 mm
Related Products
The Cherry MP1014 series are digital hall effect ...
Description:
The Cherry MP1014 series are digital hall effect proximity sensors in low profile flange mount housing. Applications for these magnetic sensors include flow sensing, pedal switches and door position sensing. Capable of millions of operationsUnipolar switchingReverse battery protection to -24 ...
Magnetic cylinder sensors are used for detection, measuring ...
Description:
Magnetic cylinder sensors are used for detection, measuring and positioning in many crucial tasks. PA12 plastic body materialSuitable for T-slot and round-slot cylindersPNP NO or reed switchPNP output types have short circuit and reverse polarity protectionLED status display.
Magnetic cylinder sensors are used for detection, measuring ...
Description:
Magnetic cylinder sensors are used for detection, measuring and positioning in many crucial tasks. PA12 plastic body materialSuitable for T-slot and round-slot cylindersPNP NO or reed switchPNP output types have short circuit and reverse polarity protectionLED status display.
Magnetic cylinder sensors are used for detection, measuring ...
Description:
Magnetic cylinder sensors are used for detection, measuring and positioning in many crucial tasks. PA12 plastic body materialSuitable for T-slot and round-slot cylindersPNP NO or reed switchPNP output types have short circuit and reverse polarity protectionLED status display.