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. 339-768
BrandRS PRO
PHP430.74
Each
units
Magnetic Proximity Switch Rectangular - 38mm 10mm 25mm 38 x 25 x 10 mm
RS Stock No. 361-7011
BrandRS PRO
PHP165.02
Each
units
Proximity Switch Cylindrical 11 mm 28mm - - 11 x 28 mm
RS Stock No. 811-0745
BrandRS PRO
PHP135.07
Each
units
Linear Actuator Rectangular - 32mm 13mm 8mm 32 x 13 x 8 mm
RS Stock No. 361-4927
BrandRS PRO
PHP192.11
Each
units
Proximity Switch Rectangular - 32mm 8mm 15mm 32 x 8 x 15 mm
RS Stock No. 536-1710
BrandRS PRO
PHP56.45
Each
units
Transducer Cylindrical 4 mm 19mm - - 4 x 19 mm
RS Stock No. 285-245
BrandRS PRO
PHP346.21
Each
units
Proximity Switch Rectangular - 32mm 24mm 10mm 32 x 24 x 10 mm
RS Stock No. 536-1748
BrandRS PRO
PHP125.78
Each
units
Transducer Rectangular - 28.6mm 19mm 6.3mm 28.6 x 6.3 x 19 mm
RS Stock No. 536-1732
BrandRS PRO
PHP89.58
Each
units
Transducer Rectangular - 20mm - - -
RS Stock No. 822-4689
Mfr. Part No.GLS-M1
BrandOmron
PHP785.85
Each
units
Proximity Sensor Rectangular - 50mm 10mm 14mm 50 x 10 x 14 mm
RS Stock No. 613-8202
Mfr. Part No.MMPSM
BrandAssemtech
PHP146.82
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
PHP160.97
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS Stock No. 765-9331
Mfr. Part No.MP201901
BrandZF
PHP261.27
Each
units
Magnetic Proximity Sensor Rectangular - 28.58mm 19.1mm 6.35mm 28.58 x 19.1 x 6.35 mm
RS Stock No. 765-9343
Mfr. Part No.AS201901
BrandZF
PHP216.51
Each
units
Magnetic Reed Sensor Rectangular - - - - -
RS Stock No. 917-2668
Mfr. Part No.PLC10040
BrandCelduc
PHP790.89
Each
units
Magnetic Proximity Sensor Rectangular - 32mm 6.8mm 15mm 32 x 15 x 6.8 mm
RS Stock No. 331-8168
Mfr. Part No.RSH01
BrandAssemtech
PHP58.24
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. 917-2671
Mfr. Part No.PTI40020
BrandCelduc
PHP491.56
Each
units
Magnetic Proximity Sensor Cylindrical M8 25mm - - -
RS Stock No. 917-2662
Mfr. Part No.PTA80020
BrandCelduc
PHP820.44
Each
units
Magnetic Proximity Sensor Cylindrical M10 40mm - - -
RS Stock No. 355-5519
Mfr. Part No.BTL5-F-2814-1S
BrandBALLUFF
PHP2,401.33
Each
units
Micropulse Transducer Rectangular - 28mm 40mm 29.9mm 28 x 40 x 29.9 mm
RS Stock No. 289-7812
Mfr. Part No.PSM BLK
BrandAssemtech
PHP211.53
Each
units
Proximity Switch Rectangular - 30mm 7mm 20mm 30 x 7 x 20 mm
RS Stock No. 331-7604
Mfr. Part No.S1416
BrandAssemtech
PHP1,217.68
Each
units
Reed Switch Cylindrical - 50mm - - -
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