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$15.99
$16.99
GAGALOR NO&NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor For Roller Shutter With Adjustable Bracket
Amazon.com
18
$15.99
$16.99
GAGALOR NO&NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor For Roller Shutter With Adjustable Bracket
Amazon.com
18
$104.00
MLTP10 MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
Radwell.com
$104.00
MLTP10 MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
Radwell.com
$17.38
Uxcell Rolling Door Contact Magnetic Reed Switch Alarm With 3 Wires For N.O./N.C. Applications OC-55
Amazon.com
38
$17.38
Uxcell Rolling Door Contact Magnetic Reed Switch Alarm With 3 Wires For N.O./N.C. Applications OC-55
Amazon.com
38
$115.00
Safety Switch Set: non-contact coded magnetic (PN# LPC-110005)
Automation Direct
$115.00
Safety Switch Set: non-contact coded magnetic (PN# LPC-110005)
Automation Direct
$15.69
Bnafes 4Sets MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch White
Amazon.com
13
$15.69
Bnafes 4Sets MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch White
Amazon.com
13
$19.99
Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace
Amazon.com
45
$19.99
Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace
Amazon.com
45
$15.99
Magnetic Reed Switch MC-32 NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm
Amazon.com
17
$15.99
Magnetic Reed Switch MC-32 NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm
Amazon.com
17
$378.62
Detex Magnetic Switch: Magnetic Switch Model: MS-2049SC
Grainger
$378.62
Detex Magnetic Switch: Magnetic Switch Model: MS-2049SC
Grainger
$136.42
Detex Magnetic Switch: Magnetic Switch Model: MS-1039S
Grainger
$136.42
Detex Magnetic Switch: Magnetic Switch Model: MS-1039S
Grainger
$12.99
Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC With Adjustable Bracket
Amazon.com
$12.99
Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC With Adjustable Bracket
Amazon.com
$15.89
CYSFETENA Recessed Door Switch RC-33 NC Recessed Wired, 15mm-5mm Door Magnetic Reed Switch For Home Security Alarm Systems, Magnetic Sensors For Alarm
Amazon.com
$15.89
CYSFETENA Recessed Door Switch RC-33 NC Recessed Wired, 15mm-5mm Door Magnetic Reed Switch For Home Security Alarm Systems, Magnetic Sensors For Alarm
Amazon.com
$208.00
Safety Switch Set: non-contact magnetic (PN# BMR-416016)
Automation Direct
$208.00
Safety Switch Set: non-contact magnetic (PN# BMR-416016)
Automation Direct
$5.99
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, ABS, MC-38
Amazon.com
3
$5.99
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, ABS, MC-38
Amazon.com
3
$7.97
QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
Amazon.com
328
$7.97
QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
Amazon.com
328
$240.00
Safety Switch Set: non-contact coded magnetic (PN# LMC-133008)
Automation Direct
$240.00
Safety Switch Set: non-contact coded magnetic (PN# LMC-133008)
Automation Direct
$8.99
2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
Amazon.com
14
$8.99
2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
Amazon.com
14
$33.99
RC-35 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
4
$33.99
RC-35 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
4
$17.99
Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
16
$17.99
Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
16
$33.99
RC-36 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
1
$33.99
RC-36 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
1
$163.32
MLT-P05-S MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
Radwell.com
$163.32
MLT-P05-S MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
Radwell.com
$9.99
Magnetic Reed Switch RC-31 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Magnetic Reed
Amazon.com
19
$9.99
Magnetic Reed Switch RC-31 NC Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Magnetic Reed
Amazon.com
19
$128.24
SDC Door Status Sensor: Door Status Switch Model: mc-4m
Grainger
$128.24
SDC Door Status Sensor: Door Status Switch Model: mc-4m
Grainger
$7.99
Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm White- (5 Sets)
Amazon.com
68
$7.99
Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm White- (5 Sets)
Amazon.com
68
$231.35
Detex Magnetic Switch: Magnetic Switch Model: MS-2049S
Grainger
$231.35
Detex Magnetic Switch: Magnetic Switch Model: MS-2049S
Grainger
$7.99
MC-38 NC Surface Mount Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch, For Home Security And Burglar Alarm Systems, Sets Of 2,
Amazon.com
36
$7.99
MC-38 NC Surface Mount Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch, For Home Security And Burglar Alarm Systems, Sets Of 2,
Amazon.com
36
$8.39
Dairzitv MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 5 Pair
Amazon.com
$8.39
Dairzitv MC-31 Surface Mount Wired NC Door Contact Sensor Alarm Magnetic Reed Switch White 5 Pair
Amazon.com
$11.24
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, Zinc Alloy Sliver, OC-59
Amazon.com
$11.24
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, Zinc Alloy Sliver, OC-59
Amazon.com
$15.93
Aoje-Link MC-58 NO Wired Magnetic Switch Door Window Reed Switch Micro Alarm Magnetic Contact Security Silver Gray 1Pcs
Amazon.com
$15.93
Aoje-Link MC-58 NO Wired Magnetic Switch Door Window Reed Switch Micro Alarm Magnetic Contact Security Silver Gray 1Pcs
Amazon.com
$16.29
Uxcell 3Pcs MC-38 Surface Mount Wired NO Door Sensor Alarm Magnetic Reed Switch White
Amazon.com
$16.29
Uxcell 3Pcs MC-38 Surface Mount Wired NO Door Sensor Alarm Magnetic Reed Switch White
Amazon.com
$7.49
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Open/Closed NC/NO Contact Sensor Alarm Magnetic Door Switch With 3 Wires, Zinc Alloy Sliver
Amazon.com
$7.49
FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Open/Closed NC/NO Contact Sensor Alarm Magnetic Door Switch With 3 Wires, Zinc Alloy Sliver
Amazon.com
$26.59
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36 10Pcs
Amazon.com
11
$26.59
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36 10Pcs
Amazon.com
11
$71.25
2507A-L: Edwards Signaling | Non-Contact Magnetic Switches
Galco Industrial Electronics
$71.25
2507A-L: Edwards Signaling | Non-Contact Magnetic Switches
Galco Industrial Electronics
$19.79
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-33 10Pcs
Amazon.com
143
$19.79
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-33 10Pcs
Amazon.com
143
$20.99
GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
Amazon.com
13
$20.99
GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
Amazon.com
13
$125.26
Security Door Controls Door Position Sensor (DPS) Concealed Magnetic Contact DPDT Double Pole Double Throw MC-4M-2-U
DkHardware.com
$125.26
Security Door Controls Door Position Sensor (DPS) Concealed Magnetic Contact DPDT Double Pole Double Throw MC-4M-2-U
DkHardware.com
$32.99
MC-31B NC/NO Magnetic Reed Switch Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
10
$32.99
MC-31B NC/NO Magnetic Reed Switch Surface Mount Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
Amazon.com
10
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    Shop magnetic door sensor switch

    Sponsored
    About our ads
    $15.99
    $16.99
    GAGALOR NO&NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor For Roller Shutter With Adjustable Bracket
    Amazon.com
    18
    $15.99
    $16.99
    GAGALOR NO&NC 3 Wires Magnetic Garage Door Contacts Heavy Duty Alarm Switch Sensor For Roller Shutter With Adjustable Bracket
    Amazon.com
    18
    $104.00
    MLTP10 MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
    Radwell.com
    $104.00
    MLTP10 MAGNELINK INC - Sensors & Switches & Reed/Hall-Effect/Magnetic Switch Supplies
    Radwell.com
    $17.38
    Uxcell Rolling Door Contact Magnetic Reed Switch Alarm With 3 Wires For N.O./N.C. Applications OC-55
    Amazon.com
    38
    $17.38
    Uxcell Rolling Door Contact Magnetic Reed Switch Alarm With 3 Wires For N.O./N.C. Applications OC-55
    Amazon.com
    38
    $115.00
    Safety Switch Set: non-contact coded magnetic (PN# LPC-110005)
    Automation Direct
    $115.00
    Safety Switch Set: non-contact coded magnetic (PN# LPC-110005)
    Automation Direct
    $15.69
    Bnafes 4Sets MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch White
    Amazon.com
    13
    $15.69
    Bnafes 4Sets MC-31B Magnetic Reed Switch Wired Surface Mount Normally Open Closed NC NO Door Contact Sensor Alarm Magnetic Door Switch White
    Amazon.com
    13
    $19.99
    Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace
    Amazon.com
    45
    $19.99
    Tokatuker NC NO Magnetic Switch Wired Recessed Door Sensor Hidden Window Contact Reed Switch For Alarm System Access Control Replace
    Amazon.com
    45
    $15.99
    Magnetic Reed Switch MC-32 NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm
    Amazon.com
    17
    $15.99
    Magnetic Reed Switch MC-32 NC/NO Surface Mount Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm
    Amazon.com
    17
    $378.62
    Detex Magnetic Switch: Magnetic Switch Model: MS-2049SC
    Grainger
    $378.62
    Detex Magnetic Switch: Magnetic Switch Model: MS-2049SC
    Grainger
    $136.42
    Detex Magnetic Switch: Magnetic Switch Model: MS-1039S
    Grainger
    $136.42
    Detex Magnetic Switch: Magnetic Switch Model: MS-1039S
    Grainger
    $12.99
    Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC With Adjustable Bracket
    Amazon.com
    $12.99
    Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC With Adjustable Bracket
    Amazon.com
    $15.89
    CYSFETENA Recessed Door Switch RC-33 NC Recessed Wired, 15mm-5mm Door Magnetic Reed Switch For Home Security Alarm Systems, Magnetic Sensors For Alarm
    Amazon.com
    $15.89
    CYSFETENA Recessed Door Switch RC-33 NC Recessed Wired, 15mm-5mm Door Magnetic Reed Switch For Home Security Alarm Systems, Magnetic Sensors For Alarm
    Amazon.com
    $208.00
    Safety Switch Set: non-contact magnetic (PN# BMR-416016)
    Automation Direct
    $208.00
    Safety Switch Set: non-contact magnetic (PN# BMR-416016)
    Automation Direct
    $5.99
    FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, ABS, MC-38
    Amazon.com
    3
    $5.99
    FOCMKEAS Magnetic Reed Switch Wired Surface Mount Normally Closed NC Contact Sensor Alarm Magnetic Door Switch With 2 Wires, ABS, MC-38
    Amazon.com
    3
    $7.97
    QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
    Amazon.com
    328
    $7.97
    QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
    Amazon.com
    328
    $240.00
    Safety Switch Set: non-contact coded magnetic (PN# LMC-133008)
    Automation Direct
    $240.00
    Safety Switch Set: non-contact coded magnetic (PN# LMC-133008)
    Automation Direct
    $8.99
    2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
    Amazon.com
    14
    $8.99
    2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
    Amazon.com
    14
    $33.99
    RC-35 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
    Amazon.com
    4
    $33.99
    RC-35 NC/NO Magnetic Reed Switch Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
    Amazon.com
    4
    $17.99
    Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
    Amazon.com
    16
    $17.99
    Magnetic Reed Switch RC-33 NC/NO Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
    Amazon.com
    16