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.


...
Read more Read less

Filters

Viewing 21 - 40 of 57 products
Results per page
Description Price Application Shape Diameter Length Width Height Dimensions
RS Stock No. 355-5519
Mfr. Part No.BTL5-F-2814-1S
BrandBALLUFF
$76.23
Each
units
Micropulse Transducer Rectangular - 28mm 40mm 29.9mm 28 x 40 x 29.9 mm
RS Stock No. 917-2678
Mfr. Part No.PTI70020
BrandCelduc
$49.38
Each
units
Magnetic Proximity Sensor Cylindrical M8 32mm - - -
RS Stock No. 331-8174
Mfr. Part No.RSH32
BrandAssemtech
$2.34
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. 917-2662
Mfr. Part No.PTA80020
BrandCelduc
$34.45
Each
units
Magnetic Proximity Sensor Cylindrical M10 40mm - - -
RS Stock No. 791-8557
Mfr. Part No.MWR0032KAC-KH
BrandSensitec
$10.56
Each
units
MagnetoResistive sensor Round 20 mm - 3.5mm - 20.44 x 3.5 mm
RS Stock No. 917-2646
Mfr. Part No.PCA22330
BrandCelduc
$24.56
Each
units
Magnetic Proximity Sensor Cylindrical M12 80mm - - -
RS Stock No. 331-8613
Mfr. Part No.RSH33
BrandAssemtech
$0.99
Each
units
Filter, Reed Switch, Tachometer, Transducer Rectangular - 19.05mm 3mm 3mm 19.05 x 3 x 3 mm
RS Stock No. 124-3806
BrandBALLUFF
$36.98
Each
units
Micropulse Transducer Round 25 mm - - 8mm 25 (Dia.) x 8 mm
RS Stock No. 289-7856
Mfr. Part No.PRM
BrandAssemtech
$2.09
Each
units
Reed Switch Cylindrical 6 mm 18mm - - 6 x 18 mm
RS Stock No. 765-9334
Mfr. Part No.MP200702
BrandCherry
$23.86
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - -
RS Stock No. 784-0022
Mfr. Part No.DM60-31-15
$23.35
Each
units
Magnetic Sensor Round 31 mm - - 15mm 31 (Dia.) x 15 mm
RS Stock No. 355-5531
Mfr. Part No.BTL5-P-3800-2
BrandBALLUFF
$31.72
Each
units
Micropulse Transducer Rectangular - 38mm 20mm 14mm 38 x 20 x 14 mm
RS Stock No. 124-3805
BrandBALLUFF
$41.65
Each
units
Micropulse Transducer Round 32 mm - - 8mm 32 (Dia.) x 8 mm
RS Stock No. 784-0029
Mfr. Part No.DM25-32-07
$30.34
Each
units
Magnetic Sensor Round 32 mm - - 7mm 32 (Dia.) x 7 mm
RS Stock No. 331-8168
Mfr. Part No.RSH01
BrandAssemtech
$1.19
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. 866-2586
Mfr. Part No.M1219-2
BrandAssemtech
$1.88
Each
units
- Cylindrical 3 mm - - 2mm 3 (Dia.) x 2 mm
RS Stock No. 765-9347
Mfr. Part No.MP200701
BrandZF
$15.51
Each
units
Magnetic Proximity Sensor Cylindrical - 25.4mm - - -
RS Stock No. 917-2674
Mfr. Part No.PTI50020
BrandCelduc
$22.47
Each
units
Magnetic Proximity Sensor Cylindrical M8 25mm - - -
RS Stock No. 124-3807
BrandBALLUFF
$57.36
Each
units
Micropulse Transducer Rectangular - 55mm 20mm 21mm 55 x 20 x 21 mm
RS Stock No. 794-9520
Mfr. Part No.GLS-M1
BrandOmron
$30.33
Each
units
- - - 50mm 14mm - -
Related Products
Celduc PTA/PDC series M10 magnetic proximity sensors are ...
Description:
Celduc PTA/PDC series M10 magnetic proximity sensors are an extremely small package size. Featuring a normally open contact in a stainless steel housing. The PTA/PDC series comes pre cabled with a 2 wire 2 m length cable.
Proximity sensors with longer sensing distance require increased ...
Description:
Proximity sensors with longer sensing distance require increased sensitivity. However, with the increased sensitivity, temperature changes will have bigger influence in sensing distance. E2E NEXT Proximity Sensors use "Thermal Distance Control": long-distance and stable detection technology, newly developed by ...
These magnets are designed to control Hall effect ...
Description:
These magnets are designed to control Hall effect sensors with on-off or analog operation.Easy to install with a 1/4-20 and 8-32 American thread nut (not supplied), for the model number.
Magnetic proximity sensor with Reed switch and M8 ...
Description:
Magnetic proximity sensor with Reed switch and M8 thermoplastic housing.2-metre output cable.Detection distance up to 19 mm.LED displays operating status.