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Magnetic Sensors

Magnetic Sensors

The Magnetic Sensor is a device that detects changes in magnetic flux density. Such change in magnetic properties is utilized in security devices such as reed switches. We offer a wide selection of mighty earth magnets and recessed magnetic switches to help you secure your perimeter.

  • Miniature Floor Mount Cast Aluminum Overhead Door Switch Set Magnetic Contact, 2 1/2" Gap
    from $18.48

    Miniature Overhead Door Magnetic Floor Mount Switch Set, 2 1/2" Gap

    4532B
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Overhead Door Floor Mount M...

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    from $18.48
  • Reed Switch Set, 3/8"
    from $35.60

    3/8” Dia. Recessed Switch Set - 2020-12/2020-T Series - 10 Pack

    2020-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description 3/8” Dia. Recessed Switch Set - 10 Pac...

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    from $35.60
  • Water Sensor With Relay Contact
    from $24.00

    Water Sensor With Relay Contact - 2500/2600 Series

    2600
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Water Sensor With Relay Contact Undete...

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    from $24.00
  • Push Button/Plunger Switch - PB-100/PBF-100 Series - 10 Pack
    from $55.20

    Push Button/Plunger Switch - PB-100/PBF-100 Series - 10 Pack

    PBF-100-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Push Button/Plunger Switch - 10 Pack T...

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    from $55.20
  • Miniature "shortie" Recessed 3/8" Diameter Switch Set Magnetic Contact, 1/2"+ Standard Gap, .625" length
    from $45.20

    Miniature 3/8” Recessed Switch Set - 20RS-12/20RS-T Series - 10 Pack

    20RS-12W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature 3/8” Recessed Switch Set -...

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    from $45.20
  • Magnasphere Surface Mount Switch Set - MS28/MS29 and MS29P Series - 10 PACK
    from $217.40

    Magnasphere Surface Mount Switch Set - MS28/MS29 and MS29P Series - 10 PACK

    MS28A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Magnasphere Surface Mount Switch Set M...

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    from $217.40
  • Miniature Flanged Surface Mount Switch Set - 1" Gap - 200V/140V
    from $43.60

    Miniature Surface Mounted Switch Sets With Leads - 100/110 Series - 10 Pack

    100-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Surface Mount Switch Sets Wi...

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    from $43.60
  • Rare Earth Magnet Switch Sets
    from $84.00

    Rare Earth Magnet Switch Sets, N Series, Miniature "Shortie" Recessed 3/8in with 12in Leads - Open Loop - 10 Pack

    NPNB-N30RS-12
    GRI

    Description Rare Earth Magnet Switch Sets, N Series, Miniature "Shortie" Recessed 3/8" w/ 12" Leads - Open Loop - 10 Pack (White) Our Mighty Mag c...

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    from $84.00
  • Super Miniature 1/4" Recessed Switch
    from $36.40

    Switch (Only), Super Miniature 1/4" Recessed w/ 12" Leads - 10 Pack

    S50RS-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Super Miniature 1/4" ...

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    from $36.40
  • recessed Switch Current Controller
    $64.40

    Current Controller with Recessed Switch - Automatic AC Voltage Switching System, UL Listed

    CC-01-3030-T
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable   Description Current Controller/Automatic AC Vol...

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    $64.40
  • 120T/4473 Series 3/4" Switch 3/8" Magnet Recessed Switch Sets
    $28.00

    Magnet Recessed Switch Set - 3/4" Switch And 3/8" Magnet - 10 Pack

    NPNB-4473
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Magnet Recessed Switch Set - 3/4" Swit...

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    $28.00
  • LED Cabinet LIght
    $69.00

    LED Cabinet LIght

    NPNB-RALED01
    Primus Cable

    Description LED Cabinet Light The LED Cabinet Light is a motion activated high power LED light designed to offer exceptional cabinet visibility ...

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    $69.00
  • High Security Surface Mount Magnetic Switches
    from $232.88

    High Security Surface Mount Magnetic Switches

    GR2707-A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description High Security Mount Magnetic Switches T...

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    from $232.88
  • Reed Switch Set, Miniature 1/4" Recessed w/ Cable Leads - 10 Pack
    from $65.20

    Reed Switch Set, Miniature 1/4" Recessed w/ Cable Leads - 10 Pack

    60RS-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Reed Switch Set, Miniature 1/4" Rece...

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    from $65.20
  • 120T/4473 Series 3/4" Switch 3/8" Magnet Recessed Switch Sets
    from $40.40

    Recessed 3/4" Switch 3/8" Magnet Switch Sets - 120T/4473 Series - 10 Pack

    120T-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 3/4" Switch 3/8" Magnet Switc...

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    from $40.40
  • Reed Switch Set, Closed Loop, 3/4"
    from Call for Pricing

    Recessed 3/4” and 1" Steel Door Switch Set - 180-12/184-12/8080-T Series - 10 Pack

    180-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 3/4” and 1" Steel Door Switch...

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    from Call for Pricing
  • Recessed 1/2" Switch Set - 150 Series - 10 Pack
    from Call for Pricing

    Recessed 1/2" Switch Set - 150 Series - 10 Pack

    160-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 1/2" Switch Set - 150 Series ...

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    from Call for Pricing
  • Roller Ball Actuated Plunger Switch, Closed Loop, Flanged
    from $67.60

    Roller Ball Plunger Contact - RB Series - 10 Pack

    RB-01-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Roller Ball Plunger Contact - 10 Pack ...

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    from $67.60
  • Roller Ball Actuated Plunger Switch, Closed Loop, Flanged, Short, w/ Leads
    from $65.80

    Roller Ball Actuated Plunger Switch, Closed Loop, Flanged, Short, w/ Leads - 10 Pack

    NPNB-DS-01-W
    GRI

    Description Roller Ball Actuated Plunger Switch, Closed Loop, Flanged, Short, w/ Leads - 10 Pack (White) The new Short Roller Ball Switch is a un...

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    from $65.80
  • Reed Switch Set, Open Loop, Miniature 1/4" Recessed Press Fit w/ Cable Leads
    from $67.00

    Reed Switch Set, Open Loop, Miniature 1/4" Recessed Press Fit w/ Cable Leads - 10 Pack

    NPNB-60R-12-W
    GRI

    Description Open Loop, Miniature 1/4" Recessed Press Fit Reed Switch Set w/ Cable Leads - 10 Pack (White) The miniature 1/4" recessed reed switch...

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    from $67.00
  • Recessed 3/4” & 1” Stubby Steel Door Switch Set - 180RS/8080RS-T Series - 10 Pack
    from $61.20

    Recessed 3/4” & 1” Stubby Steel Door Switch Set - 180RS/8080RS-T Series - 10 Pack

    8080RS-T-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 3/4” & 1” Stubby Steel Do...

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    from $61.20
  • Magnasphere Recessed 1/2” Switch Set - MS150-12/MS150-T Series - 10 Pack
    from Call for Pricing

    Magnasphere Recessed 1/2” Switch Set - MS150-12/MS150-T Series - 10 Pack

    MS150-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Magnasphere Recessed 1/2” Switch Set -...

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    from Call for Pricing
  • Magnasphere Aluminum Industrial Switch Set - MS4400 Series
    $72.40

    Magnasphere Aluminum Industrial Switch Set - MS4400 Series

    MS4400-A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Magnasphere Aluminum Industrial Switch...

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    $72.40
  • Commercial Overhead Door Switch
    from $24.26

    Commercial Overhead Door Surface Mount Switch Set - 4110/4482 Series

    4482A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Commercial Overhead Door Surface Mount...

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    from $24.26
  • Super Miniature 1/4” Recessed Switch Set - 50RS-12 Series - 10 Pack
    from $43.20

    Super Miniature 1/4” Recessed Switch Set - 50RS-12 Series - 10 Pack

    50RS-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Super Miniature 1/4” Recessed Switch...

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    from $43.20
  • Miniature Surface Mount Switch Sets
    from $58.00

    Miniature Surface Mount Switch Sets - 1100 Series - 10 Pack

    1100A-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Surface Mount Switch Sets - ...

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    from $58.00
  • N Series Switch Set Magnetic Contacts, Rare Earth Magnets w/ Press Fit Contacts
    from $52.80

    Rare Earth Mighty Mag Series Switch Sets - N20RS Series - 10 Pack

    N20RS-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Rare Earth Mighty Mag Series Switch Se...

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    from $52.80
  • Press Fit Reed Switch, 3/8" Recessed w/ Cable Leads and Nickel Plated Magnets
    from $41.60

    Rare Earth Mighty Mag Series Switch Sets - N2020 Series - 10 Pack

    N2020-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Rare Earth Mighty Mag Series Switch Se...

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    from $41.60
  • Press Fit Reed Switch, 3/4" Recessed w/ Cable Leads and Nickel Plated Magnets
    from $46.00

    Rare Earth Mighty Mag Series Switch Sets - N120T Series - 10 Pack

    N120T-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Rare Earth Mighty Mag Series Switch Se...

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    from $46.00
  • Miniature 1/4” Recessed Switch Set - 50R Series - 10 Pack
    from $21.40

    Miniature 1/4” Recessed Switch Set - 50R Series - 10 Pack

    50RF-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature 1/4” Recessed Switch Set -...

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    from $21.40
  • Miniature Overhead Door Switch Set - 4532/4532L Series
    from $21.86

    Miniature Overhead Door Switch Set - 4532/4532L Series

    4532L
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Overhead Door Switch Set - 4...

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    from $21.86
  • Box Tamper Switch With 12" Wire Leads
    from $73.40

    Box Tamper Switch - TS-01 Series - 10 Pack

    TSW-01
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Box Tamper Switch With 12" Wire Leads ...

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    from $73.40
  • Industrial Surface Mount Switch Set - 4400 Series
    from $36.32

    Industrial Surface Mount Switch Set - 4400 Series

    4400-A
    GRI

    Description Industrial Surface Mount Switch Set - 4400 Series This series is a heavy duty surface mounted industrial grade contact. A weather resis...

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    from $36.32
  • Reed Switch Set, Micro Surface Mount w/ Self-Stick Adhesive & Center Leads
    from $42.20

    Micro Surface Mount Switch Set - 500 Series - 10 Pack

    502-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Micro Surface Mount Switch Set - 10 Pa...

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    from $42.20
  • Capped Miniature Surface Mount Switch Set - 700 Series - 10 Pack
    from $68.00

    Capped Miniature Surface Mount Switch Set - 700 Series - 10 Pack

    700CL-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Capped Miniature Surface Mount Switch ...

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    from $68.00
  • Recessed 3/8” Flanged Switch Set - 20F/20 OF Series - 10 Pack
    from Call for Pricing

    Recessed 3/8” Flanged Switch Set - 20F/20 OF Series - 10 Pack

    20F-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 3/8” Flanged Switch Set - 10 ...

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    from Call for Pricing
  • Recessed 3/8" Switch Set Magnetic Contact, 1" Plus Standard Gap, 12" leads, White
    $376.00

    Rare Earth Mighty Mag Series Switch Sets - N5065 Series - 100 Pack

    N5065
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Rare Earth Mighty Mag Series Switch Se...

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    $376.00
  • Recessed 1/2” Short Switch Sets - 150RS Series - 10 Pack
    from $56.00

    Recessed 1/2” Short Switch Sets - 150RS Series - 10 Pack

    150RS-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 1/2” Short Switch Sets - 150R...

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    from $56.00
  • Press Fit Reed Switch 3/8"
    from $41.60

    Recessed 3/8” Ribbed Switch Set - 2120 Series - 10 Pack

    2120-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Recessed 3/8” Ribbed Switch Set The 21...

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    from $41.60
  • Mighty Mag Rare Earth Magnets (Round) - 10 Pack
    from $9.60

    Mighty Mag Rare Earth Magnets (Round) - 10 Pack

    MM-375
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Rare Earth Magnets (Mighty Mag) - 10 P...

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    from $9.60
  • Industrial Overhead Aluminum Door Switch Set
    from $34.84

    Industrial Overhead Aluminum Door Switch Set - 200/250 Series

    210-36
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Industrial Overhead Aluminum Door Swit...

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    from $34.84
  • Door Monitor
    $118.88

    Door Monitor

    290-1
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Door Monitor The Door Monitors have be...

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    $118.88
  • Door Alert Annunciator
    $93.90

    Door Alert Annunciator

    DA-1
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Door Alert Annunciator The Door Alert ...

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    $93.90
  • Alnico V Bare Magnet 1/4™
    from $92.00

    Alnico V Bare Magnets - 100 Pack

    M-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Alnico V Bare Magnets  - 100 Pack Choo...

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    from $92.00
  • Reed Switch Set, Super Miniature Recessed with 1/2™ Wide Gap, 12" Leads
    $83.60

    Reed Switch Set, Super Miniature Recessed with 1/2" Wide Gap, 12" Leads - Open Loop - 10 Pack

    NPNB-60RS-12WG
    GRI

    Super Miniature Recessed Reed Switch Set, 1/2" Wide Gap, Open Loop The Super Mini Recessed Switch series includes 1/4" diameter switches with reces...

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    $83.60
  • Reed Switch Set, Super Miniature Recessed with 3/4™ Extra Wide Gap, 12" Leads
    $83.00

    Reed Switch Set, Super Miniature Recessed with 3/4" Extra Wide Gap, 12" Leads - Open Loop - 10 Pack

    NPNB-60RS-12XWG
    GRI

    Super Miniature Recessed Reed Switch Set, 3/4" Extra Wide Gap, Open Loop The Super Mini Recessed Switch series includes 1/4" diameter switches with...

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    $83.00
  • Adjustable Screw Plunger/Push Button Switch, Closed Loop 3/8" Press Fit w/ Screw Terminals
    $54.80

    Press Fit Reed Switch Adjustable Screw Plunger/Push Button Switch, Closed Loop, 3/8" w/ Screw Terminals - 10 Pack

    PB-2020-T-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Press Fit Reed Switch Adjustable Scr...

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    $54.80
  • Adjustable Screw Plunger/Push Button Switch, Closed Loop 3/8" Flanged w/ Screw Terminals
    $54.80

    Adjustable Screw Plunger/Push Button Switch, Closed Loop, 3/8" Flanged w/ Screw Terminals - 10 Pack

    PBF-2020-T-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Adjustable Screw Plunger Push Button...

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    $54.80