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 41 - 57 of 57 products
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Description Price Application Shape Diameter Length Width Height Dimensions
RS Stock No. 765-9353
Mfr. Part No.CU103602
BrandZF
£44.76
Each
Units
Angular Position Sensor - - 57.33mm 48.3mm 17.7mm 57.33 x 48.3 x 17.7 mm
RS Stock No. 822-4689
Mfr. Part No.GLS-M1
BrandOmron
£9.13
Each
Units
Proximity Sensor Rectangular - 50mm 10mm 14mm 50 x 10 x 14 mm
RS Stock No. 784-0022
Mfr. Part No.DM60-31-15
£10.20
Each
Units
Magnetic Sensor Round 31 mm - - 15mm 31 (Dia.) x 15 mm
RS Stock No. 124-3805
BrandBALLUFF
£17.00
Each
Units
Micropulse Transducer Round 32 mm - - 8mm 32 (Dia.) x 8 mm
RS Stock No. 181-2185
Mfr. Part No.101MG7
BrandHoneywell
£8.13
Each
Units
Solid State Sensor Cylindrical 6 mm 6.3mm - - 6.3 x 6.3 mm
RS Stock No. 917-2684
Mfr. Part No.PWB11500
BrandCelduc
£9.57
Each
Units
Magnetic Proximity Sensor Rectangular - 47.7mm 9.7mm 14mm 47.7 x 14 x 9.7 mm
RS Stock No. 765-9362
Mfr. Part No.CU103601
BrandZF
£32.40
Each
Units
Angular Position Sensor - - 57.33mm 48.3mm 17.7mm 57.33 x 48.3 x 17.7 mm
RS Stock No. 331-7604
Mfr. Part No.S1416
BrandAssemtech
£21.92
Each
Units
Reed Switch Cylindrical - 50mm - - -
RS Stock No. 331-8174
Mfr. Part No.RSH32
BrandAssemtech
£1.25
Each
Units
Filter, Reed Switch, Tachometer, Transducer Rectangular - 27.94mm 4.75mm 4.75mm 27.94 x 4.75 x 4.75 mm
RS Stock No. 179-2889
Mfr. Part No.P3150000
BrandCelduc
£5.49
Each
Units
Proximity Sensor Rectangular - 32mm 6.8mm 15mm 32 x 6.8 x 15 mm
RS Stock No. 290-1450
Mfr. Part No.MAG-3010-B
BrandSick
£7.72
Each
Units
Magnetic Proximity Sensor Cylindrical 30 mm 10mm - - 30 x 10 mm
RS Stock No. 784-0029
Mfr. Part No.DM25-32-07
£14.90
Each
Units
Magnetic Sensor Round 32 mm - - 7mm 32 (Dia.) x 7 mm
RS Stock No. 866-2586
Mfr. Part No.M1219-2
BrandAssemtech
£1.00
Each
Units
- Cylindrical 3 mm - - 2mm 3 (Dia.) x 2 mm
RS Stock No. 124-3806
BrandBALLUFF
£19.26
Each
Units
Micropulse Transducer Round 25 mm - - 8mm 25 (Dia.) x 8 mm
RS Stock No. 866-2583
Mfr. Part No.M1219-1
BrandAssemtech
£1.00
Each
Units
- Cylindrical 3 mm - - 1mm 3 (Dia.) x 1 mm
RS Stock No. 183-7483
Mfr. Part No.Z4DC01
BrandOmron
£48.173
Each (In a Pack of 50)
Units
Detect Duplicated Paper Feeding - - 35.5mm 15mm 16mm 35.5 x 15 x 16 mm
RS Stock No. 2509274525
Mfr. Part No.AS101001
BrandCHERRY
£4.85
Each
Units
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