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#1 Source in low voltage wire and cable. Call us today to learn more about special offers.
#1 Source in low voltage wire and cable. Call us today to learn more about special offers.

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.

  • Door Monitor
    from $127.46

    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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    from $127.46
  • Door Alert Annunciator
    $105.88

    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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    $105.88
  • Alnico V Bare Magnet 1/4™
    from $104.00

    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 Choose ...

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    from $104.00
  • Reed Switch Set, Super Miniature Recessed with 1/2™ Wide Gap, 12" Leads
    $94.40

    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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    $94.40
  • Press Fit Reed Switch Adjustable Screw Plunger/Push Button Switch, Closed Loop, 3/8" w/ Screw Terminals - 10 Pack
    $61.80

    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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    $61.80
  • Push Button Plunger Switch, Open Loop, 9/16" Press Fit w/ Screw Terminals - 10 Pack
    $81.20

    Push Button Plunger Switch, Open Loop, 9/16" Press Fit w/ Screw Terminals - 10 Pack

    PB-101T
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Push Button Plunger Switch, Open Loo...

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    $81.20
  • Standard Surface Mount Switch Sets - 29P Series - 10 Pack
    from $68.60

    Standard Surface Mount Switch Sets - 29P Series - 10 Pack

    29PA-72
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Standard Surface Mount Switch Sets - 2...

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    from $68.60
  • Tamper Proof Miniature Surface Mount Switch Set w/ Concealed Terminals
    from $73.40

    Miniature Surface Mount Switch Set - 129 Series - 10 Pack

    129A-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Surface Mount Switch Set - 1...

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    from $73.40
  • Press Fit Reed Switch, 3/8" Ribbed Recessed w/ Leads and Nickel Magnets
    from $50.00

    Rare Earth Mighty Mag Series Switch Sets - N2120 Series - 10 Pack

    N2120-12
    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 $50.00
  • Press Fit Reed Switch, 1/2" Recessed w/ Cable Leads and Nickel Plated Magnets
    from $56.80

    Rare Earth Mighty Mag Series Switch Sets - N150 Series - 10 Pack

    N150-12
    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 $56.80
  • Magnasphere 3/8in Recessed Flanged Switch Set - MS20F/MS20-OF Series - 10 Pack
    from $202.60

    Magnasphere 3/8in Recessed Flanged Switch Set - MS20F/MS20-OF Series - 10 Pack

    MS20F-12-W
    GRI

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

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    from $202.60
  • Reed Switch Set, 1/2" Recessed Magnetic Switch w/ Cable Leads, SPDT Open/Closed - 10 Pack
    from $99.40

    Reed Switch Set, 1/2" Recessed Magnetic Switch w/ Cable Leads, SPDT Open/Closed - 10 Pack

    170-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description SPDT Open/Closed, 1/2" Recessed Magne...

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    from $99.40
  • Rare Earth Magnets + Closed Loop Reed Switch, 1/2" Recessed w/ Screw Terminals
    from $58.40

    Rare Earth Magnets + Closed Loop Reed Switch, 1/2" Recessed w/ Screw Terminals - 10 Pack

    N150-T
    GRI

    Description Rare Earth Magnets + Closed Loop Reed Switch, 1/2" Recessed w/ Screw Terminals - 10 Pack (White) This recessed "normal closed" style m...

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    from $58.40
  • Press Fit Reed Switch 1/4"
    from $45.20

    Rare Earth Mighty Mag Series Switch Sets - N50RF Series - 10 Pack

    N50RF-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 $45.20
  • Miniature 1/4" Flanged Recessed Switch
    from $28.60

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

    S50RF-12-W
    GRI

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

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    from $28.60
  • Recessed 3/8" Switch Set Magnetic Contact, 1" Plus Standard Gap, 12" leads, White
    $224.00

    Switch (Only), Recessed 3/8" Press Fit 1"+ Gap w/ 12" Leads, Closed Loop - 100/pack

    S5065
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Recessed 3/8" Press F...

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    $224.00
  • Switch (Only), Surface Mount w/ Covers
    from $32.60

    Switch (Only), Surface Mount w/ Covers And Screw Terminals - Closed Loop - 10 Pack

    S29A
    GRI

    Description Switch (Only), Surface Mount w/ Covers And Screw Terminals - Closed Loop - 10 Pack This versatile series sets the industry standard f...

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    from $32.60
  • Magnasphere 3/8” Recessed Switch Set - MS20RS-12/MS2020-12 Series
    from $221.80

    Magnasphere 3/8in Recessed Switch Set - MS20RS-12/MS2020-12 Series - 10 Pack

    MS20RS-12-W
    GRI

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

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    from $221.80
  • 120T/4473 Series 3/4" Switch 3/8" Magnet Recessed Switch Sets
    from $31.60

    Switch (Only), Magnetic Recessed 3/4" w/ 12" Leads - Closed Loop - 10 Pack

    S120T-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Magnetic Recessed 3/4" ...

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    from $31.60
  • Switch (Only), Recessed 1/2"
    $55.60

    Switch (Only), Recessed 1/2" Short STUBBY w/ Screw Terminals - Closed Loop - 10 Pack

    S150RS-T
    GRI

    Switch (Only), Recessed 1/2" Short STUBBY w/ Screw Terminals - Closed Loop - 10 Pack (White) This recessed "normal closed" style magnetic reed swit...

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    $55.60
  • Switch (Only), Recessed 3/8" Press Fit w/ 12" Leads
    from $26.40

    Switch (Only), Recessed 3/8" Press Fit w/ 12" Leads - Closed Loop - 10 Pack

    S2020-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Recessed 3/8" Press F...

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    from $26.40
  • Switch (Only), Recessed 1/2" Switch
    $40.80

    Switch (Only), Recessed 1/2" Switch w/ 12" Leads - Closed Loop - 10 Pack

    S150-12-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Recessed 1/2" Switch w/...

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    $40.80
  • Miniature Flanged Surface Mount Switch Set - 1" Gap - 200V/140V
    from $31.60

    Switch (Only), Miniature Surface Mounted, Flanged - Closed Loop - 10 Pack

    S100-12
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Switch (Only), Miniature Surface Moun...

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    from $31.60
  • Alarmed Window Bar
    $49.48

    Alarmed Window Bar - Fits Windows 30" - 42"

    WB-30-42
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Alarmed Window Bar (Fits Windows 30"-4...

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    $49.48
  • AA Dual Function Series Switch
    from $77.96

    AA Dual Function Series Switch

    AA29P-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description 2 A Form Reeds Switch, Surface Mount, ...

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    from $77.96
  • Dual Function Switch
    from $248.40

    Dual Function Switch, 2 A Form Reeds, 3/4" Recessed Steel Door, 4 C Jacketed Cable (UL 10C Fire Rated)

    AA180-B
    GRI

    Description 2 A Form Reeds Switch, 3/4" Recessed Steel Door, 4 C Jacketed Cable (UL 10C Fire Rated) - 10/pack This AA switch can be used in numer...

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    from $248.40
  • AC Dual Function Series Switch Set
    from $220.00

    AC Dual Function Series Switch Set

    AC180-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Dual Function Switch, 1 A + 1C Form Re...

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    from $220.00
  • Magnets In Cases - 100 Pack
    from $126.00

    Magnets In Cases - 100 Pack

    M-SASH-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Magnets In Cases - 100 Pack Magnets Av...

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    from $126.00
  • Magnets In Extruded Aluminum Cases
    from $10.82

    Magnets In Extruded Aluminum Cases, Wall Mount, 3 1/4" Or 3 3/4" x 1 1/8"

    M-250
    GRI

    Magnet In Extruded Aluminum Case, Wall Mount Choose between a magnet case size of 3 1/4" x 1 1/8" or 3 3/4" x 1 1/8". Dimensions given apply to the...

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    from $10.82
  • Magnets In Industrial Aluminum Housing Cases
    $712.00

    Industrial Aluminum Housing Magnets In Cases - 3.10" x 2.14" - 100 Pack

    M4532
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Industrial Aluminum Housing Magnets In...

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    $712.00
  • Mighty Mag Rare Earth Magnet In Case
    from $39.20

    Mighty Mag Rare Earth Magnet In Case, 0.22" x 0.46" x 0.96" - 10 Pack/ 100 Pack

    CMMF-875-B-10
    GRI

    Description Rare Earth Magnet (Mighty Mag) In Case - 10 Pack or 100 Pack Mighty Mags assist in resolving the installer's problem of drilling into t...

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    from $39.20
  • Mighty Mag Rare Earth Magnet
    from $8.20

    Mighty Mag Rare Earth Magnets (Flat) - 10 Pack

    MM-45
    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 $8.20
  • Gate Mount Pool Alarm
    $89.74

    Gate Mount Pool Alarms - GT10 Series

    GT10-4
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Gate Mount Pool Alarms The new Gate Mo...

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    $89.74
  • Concealed Concrete Switch Sets - 4510A Series
    from $48.02

    Concealed Concrete Switch Sets - 4510A Series

    4510A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Concealed Concrete Switch Sets Perhaps...

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    from $48.02
  • Industrial Extended 3.25™ Gap Overhead Aluminum Door Switch
    from $63.18

    Extended Gap Surface Mount Switch Sets - 200WG Series

    200-36WG
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description 200WG Series Extended Gap Surface Moun...

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    from $63.18
  • Mini Curtain Door Switch With 36" Armored Cable
    from $49.64

    Mini Curtain Door Switch Sets - 4612 Series

    4612
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Mini Curtain Door Switch Sets - 4612 S...

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    from $49.64
  • Special Purpose Pull Apart Surface Mount Reed Switch Set - 4704 Series
    from $31.60

    Special Purpose Pull Apart Surface Mount Reed Switch Set - 4704 Series

    4704-A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Special Purpose Pull Apart Surface Mo...

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    from $31.60
  • Miniature Aluminum Commercial Switch Set
    from $126.80

    Miniature Aluminum Commercial Surface Mount Switch Set - 4460 Series, 10/pack

    4462A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Miniature Aluminum Commercial Surface ...

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    from $126.80
  • Industrial Track Mount Switch Set
    from $71.80

    Industrial Track Mount Switch Set - 4700-A Series

    4700-A
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Industrial Track Mount Switch Set - 47...

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    from $71.80
  • Industrial Tamper Proof Surface Mount Switch
    from $100.40

    Industrial Surface Mount Closed Loop Switch Set - 400 Series - 10 Pack

    400-G
    GRI

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

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    from $100.40
  • Reed Switch Set, Closed Loop
    from $51.40

    Super Miniature Surface Mount Switch Sets - 505 Series - 10 Pack

    505-W
    GRI

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

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    from $51.40
  • Reed Switch Set, Closed Loop
    from $49.00

    Standard Surface Mount Switch Sets - 28/29 Series - 10 Pack

    28A-W
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Standard Surface Mount Switch Sets - 2...

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    from $49.00
  • Rare Earth Window Channel Magnet - 10 Pack
    $24.80

    Rare Earth Window Channel Magnet - 10 Pack

    MC-25
    GRI

    Description Rare Earth Window Channel Magnet - 10 Pack (White) Rare earth magnet that was especially designed to be mounted in the track of alumi...

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    $24.80
  • 3/8" Press Fit With Flat Magnet Switch Sets - 5088 Series - 10 Pack
    from $42.20

    3/8" Flat Magnet Recessed Switch Sets - 5088 Series - 10 /Pack

    5088
    GRI

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

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    from $42.20
  • Alnico V Bare Magnet W/ Tape
    $150.00

    Alnico V Bare Magnet 1/8in x 3/8in x 7/8in w/ Adhesive Tape - 10 Pack

    MF-875
    GRI

    These products are all Made to Order Which means they are non-cancelable and non-refundable Description Alnico V Bare Magnet 1/8" x 3/8" x 7/8...

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    $150.00