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. 811-0745
BrandRS PRO
TWD129.00
Each
units
Linear Actuator Rectangular - 32mm 13mm 8mm 32 x 13 x 8 mm - - - - - - -
RS Stock No. 822-4689
Mfr. Part No.GLS-M1
BrandOmron
TWD665.00
Each
units
Proximity Sensor Rectangular - 50mm 10mm 14mm 50 x 10 x 14 mm - - - - - - -
RS Stock No. 361-5009
Mfr. Part No.S1443
BrandAssemtech
TWD122.00
Each
units
Hall Effect Switch Rectangular - 30mm 7mm 20mm 30 x 7 x 20 mm - - - - - - -
RS Stock No. 536-1748
BrandRS PRO
TWD93.00
Each
units
Transducer Rectangular - 28.6mm 19mm 6.3mm 28.6 x 6.3 x 19 mm - - - - - - -
RS Stock No. 765-9334
Mfr. Part No.MP200702
BrandCherry
TWD484.00
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - - - - - - - - -
RS Stock No. 499-0935
Mfr. Part No.PT810000
BrandCelduc
TWD282.00
Each
units
Aimant Cylindrical 11 mm 33mm - - 10.7 x 33 mm - - - - - - -
RS Stock No. 536-1710
BrandRS PRO
TWD46.00
Each
units
Transducer Cylindrical 4 mm 19mm - - 4 x 19 mm - - - - - - -
New
RS Stock No. 200-9252
Mfr. Part No.XXS30P1PM12
TWD7,016.00
Each
units
- - - - - - - 105 → 1000 mm PNP Male Thread Socket M12 Barrel IP65 200kHz
RS Stock No. 765-9343
Mfr. Part No.AS201901
BrandZF
TWD139.00
Each
units
Magnetic Reed Sensor Rectangular - - - - - - - - - - - -
RS Stock No. 339-768
BrandRS PRO
TWD226.00
Each
units
Magnetic Proximity Switch Rectangular - 38mm 10mm 25mm 38 x 25 x 10 mm - - - - - - -
New
RS Stock No. 200-9243
Mfr. Part No.XXS30B2AM12
TWD9,795.00
Each
units
- - - - - - - 155 → 2000 mm 4 → 20 mA Male Thread Socket M12 Barrel IP65 120kHz
RS Stock No. 536-1732
BrandRS PRO
TWD69.00
Each
units
Transducer Rectangular - 20mm - - - - - - - - - -
RS Stock No. 765-9347
Mfr. Part No.MP200701
BrandZF
TWD325.00
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - - - - - - - - -
RS Stock No. 289-7812
Mfr. Part No.PSM BLK
BrandAssemtech
TWD93.00
Each
units
Proximity Switch Rectangular - 30mm 7mm 20mm 30 x 7 x 20 mm - - - - - - -
New
RS Stock No. 200-9222
Mfr. Part No.XXA30B1VM12
TWD9,413.00
Each
units
- - - - - - - 155 → 1000 mm 0 → 10 V Male Thread Socket M12 Barrel IP65 120kHz
New
RS Stock No. 200-9225
Mfr. Part No.XXA30B2PM12
TWD9,183.00
Each
units
- - - - - - - 155 → 2000 mm PNP Male Thread Socket M12 Barrel IP65 120kHz
New
RS Stock No. 200-9238
Mfr. Part No.XXA30S2VM12
TWD10,561.00
Each
units
- - - - - - - 155 → 2000 mm 0 → 10 V Male Thread Socket M12 Barrel IP65 120kHz
New
RS Stock No. 200-9227
Mfr. Part No.XXA30P1AM12
TWD8,265.00
Each
units
- - - - - - - 155 → 1000 mm 4 → 20 mA Male Thread Socket M12 Barrel IP65 120kHz
New
RS Stock No. 200-9259
Mfr. Part No.XXS30P4VM12
TWD9,589.00
Each
units
- - - - - - - 420 → 4000 mm 0 → 10 V Male Thread Socket M12 Barrel IP65 80kHz
New
RS Stock No. 200-9253
Mfr. Part No.XXS30P1VM12
TWD8,030.00
Each
units
- - - - - - - 105 → 1000 mm 0 → 10 V Male Thread Socket M12 Barrel IP65 200kHz