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 Detection Range Output Type Terminal Type Thread Size Body Style IP Rating Transducer Frequency
RS Stock No. 765-9337
Mfr. Part No.MP201801
BrandZF
$8.12
Each
units
Magnetic Proximity Sensor Rectangular - 23.01mm 13.97mm 5.99mm 23.01 x 13.97 x 5.99 mm - - - - - - -
RS Stock No. 784-0022
Mfr. Part No.DM60-31-15
$22.72
Each
units
Magnetic Sensor Round 31 mm - - 15mm 31 (Dia.) x 15 mm - - - - - - -
RS Stock No. 181-2185
Mfr. Part No.101MG7
BrandHoneywell
$22.50
Each
units
Solid State Sensor Cylindrical 6 mm 6.3mm - - 6.3 x 6.3 mm - - - - - - -
RS Stock No. 917-2674
Mfr. Part No.PTI50020
BrandCelduc
$24.67
Each
units
Magnetic Proximity Sensor Cylindrical M8 25mm - - - - - - - - - -
RS Stock No. 361-5009
Mfr. Part No.S1443
BrandAssemtech
$7.71
Each
units
Hall Effect Switch Rectangular - 30mm 7mm 20mm 30 x 7 x 20 mm - - - - - - -
RS Stock No. 765-9343
Mfr. Part No.AS201901
BrandZF
$8.17
Each
units
Magnetic Reed Sensor Rectangular - - - - - - - - - - - -
RS Stock No. 765-9334
Mfr. Part No.MP200702
BrandCherry
$22.80
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - - - - - - - - -
RS Stock No. 355-5531
Mfr. Part No.BTL5-P-3800-2
BrandBALLUFF
$40.22
Each
units
Micropulse Transducer Rectangular - 38mm 20mm 14mm 38 x 20 x 14 mm - - - - - - -
RS Stock No. 331-7604
Mfr. Part No.S1416
BrandAssemtech
$46.94
Each
units
Reed Switch Cylindrical - 50mm - - - - - - - - - -
RS Stock No. 917-2665
Mfr. Part No.PLMA0100
BrandCelduc
$55.16
Each
units
Magnetic Proximity Sensor Rectangular - 88mm 12mm 38mm 88 x 38 x 12 mm - - - - - - -
RS Stock No. 355-5519
Mfr. Part No.BTL5-F-2814-1S
BrandBALLUFF
$83.79
Each
units
Micropulse Transducer Rectangular - 28mm 40mm 29.9mm 28 x 40 x 29.9 mm - - - - - - -
RS Stock No. 917-2668
Mfr. Part No.PLC10040
BrandCelduc
$27.19
Each
units
Magnetic Proximity Sensor Rectangular - 32mm 6.8mm 15mm 32 x 15 x 6.8 mm - - - - - - -
RS Stock No. 499-0935
Mfr. Part No.PT810000
BrandCelduc
$18.79
Each
units
Aimant Cylindrical 11 mm 33mm - - 10.7 x 33 mm - - - - - - -
RS Stock No. 124-3807
BrandBALLUFF
$70.37
Each
units
Micropulse Transducer Rectangular - 55mm 20mm 21mm 55 x 20 x 21 mm - - - - - - -
RS Stock No. 765-9353
Mfr. Part No.CU103602
BrandZF
$95.85
Each
units
Angular Position Sensor - - 57.33mm 48.3mm 17.7mm 57.33 x 48.3 x 17.7 mm - - - - - - -
RS Stock No. 837-2007
Mfr. Part No.BTL6-A-3801-2
BrandBALLUFF
$39.98
Each
units
Micropulse Transducer Rectangular - 37.6mm 21mm 18mm 37.6 x 21 x 18 mm - - - - - - -
RS Stock No. 290-1450
Mfr. Part No.MAG-3010-B
BrandSick
$16.00
Each
units
Magnetic Proximity Sensor Cylindrical 30 mm 10mm - - 30 x 10 mm - - - - - - -
RS Stock No. 289-7856
Mfr. Part No.PRM
BrandAssemtech
$2.21
Each
units
Reed Switch Cylindrical 6 mm 18mm - - 6 x 18 mm - - - - - - -
RS Stock No. 124-3806
BrandBALLUFF
$44.67
Each
units
Micropulse Transducer Round 25 mm - - 8mm 25 (Dia.) x 8 mm - - - - - - -
RS Stock No. 290-0621
Mfr. Part No.MAG-3015-B
BrandSick
$19.00
Each
units
Magnetic Proximity Sensor Cylindrical 31 mm 15mm - - 31 x 15 mm - - - - - - -
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