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$13.99
Victorshome Magnetic Reed Switch RC-33 NC Recessed Wired Window Door Contact Sensor For Home Security And Burglar Alarm Systems 10 Pcs
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105
$13.99
Victorshome Magnetic Reed Switch RC-33 NC Recessed Wired Window Door Contact Sensor For Home Security And Burglar Alarm Systems 10 Pcs
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105
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QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
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QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
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Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy
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Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy
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10 Sets Pack Of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed Switch Sensor With Double Side Tape
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10 Sets Pack Of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed Switch Sensor With Double Side Tape
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DSC PG9303 Powerg Wireless Door Window Vanishing Magnetic Contact, 2-Way Encrypted Wireless Sensor, Slim Design, Easy Pull-Tab Enrollment, Compatible
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DSC PG9303 Powerg Wireless Door Window Vanishing Magnetic Contact, 2-Way Encrypted Wireless Sensor, Slim Design, Easy Pull-Tab Enrollment, Compatible
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Ring Alarm Contact Sensor 6-Pack - 2nd Gen | Monitor 6 Doors Or Windows | Instant Alerts | Approximately 3-Year Battery Life | Slim Design | Easy
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Ring Alarm Contact Sensor 6-Pack - 2nd Gen | Monitor 6 Doors Or Windows | Instant Alerts | Approximately 3-Year Battery Life | Slim Design | Easy
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26K+
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2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
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1
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2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
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1
$15.99
Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
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12
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Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
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12
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Bnafes Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch White 4Pcs
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45
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Bnafes Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch White 4Pcs
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45
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Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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7
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Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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7
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2 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store
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64
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2 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store
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64
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Hxchen MC-38 Door Window Contact Sensor Alarm Magnetic Reed Switch With Screws White - (2 Sets)
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$6.99
Hxchen MC-38 Door Window Contact Sensor Alarm Magnetic Reed Switch With Screws White - (2 Sets)
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$8.09
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC35
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$8.09
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC35
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$5.69
Unlorspy 2 Sets XL-33C Normally Closed Recessed Alarm Magnetic Reed Switch, NC Type Window Door Contact Sensor Magnetic Contact Switch For Door And
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$5.69
Unlorspy 2 Sets XL-33C Normally Closed Recessed Alarm Magnetic Reed Switch, NC Type Window Door Contact Sensor Magnetic Contact Switch For Door And
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$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
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23
$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
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23
$20.99
GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
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16
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GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
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16
$9.39
$10.19
BNYZWOT Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. 3/4 Inch Door Contact Position Switches DCS Work With All
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76
$9.39
$10.19
BNYZWOT Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. 3/4 Inch Door Contact Position Switches DCS Work With All
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76
$12.88
Bnafes RC-36 NC+NO Recessed Security Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets
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8
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Bnafes RC-36 NC+NO Recessed Security Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets
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8
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Fielect 2Pcs N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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Fielect 2Pcs N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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4 Sets Magnetic Reed Switch MC-31 Door Window Magnetic Switch Alarm Magnetic Reed Switch Security Normally Open Closed NC NO Door Sensor
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3
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4 Sets Magnetic Reed Switch MC-31 Door Window Magnetic Switch Alarm Magnetic Reed Switch Security Normally Open Closed NC NO Door Sensor
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3
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3 Pack Door Window Alarm,Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Swimming Pool Door
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3 Pack Door Window Alarm,Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Swimming Pool Door
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Jing Magnetic Reed Switch MC31B NCNO Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Magnetic Reed Switch,
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Jing Magnetic Reed Switch MC31B NCNO Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Magnetic Reed Switch,
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$20.99
BNYZWOT RC-35 NC & NO Wired Magnetic Door Window Contact Sensor Switch Contact Sensor Alarm Magnetic Reed Switch White - (5 Sets)
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BNYZWOT RC-35 NC & NO Wired Magnetic Door Window Contact Sensor Switch Contact Sensor Alarm Magnetic Reed Switch White - (5 Sets)
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GDQLCNXB 2 Sets MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch
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5
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GDQLCNXB 2 Sets MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch
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5
$29.98
$39.99
Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base
Amazon.com
23K+
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$39.99
Ring Alarm Contact Sensor 2-Pack - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design | Easy Installation | Base
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23K+
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Wifi Door Sensor Window Detector: Smart Magnetic Door Open Detector With App Alerts, Wireless Home Security Contact Sensor, Tuya App Remote Control,
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63
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Wifi Door Sensor Window Detector: Smart Magnetic Door Open Detector With App Alerts, Wireless Home Security Contact Sensor, Tuya App Remote Control,
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63
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1-Pack Tuya Smart Wifi Door Sensor,2.4Ghz Wifi Smart Window And Door Sensor Alarm, Wireless Magnetic Door Opening Detector
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1-Pack Tuya Smart Wifi Door Sensor,2.4Ghz Wifi Smart Window And Door Sensor Alarm, Wireless Magnetic Door Opening Detector
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Window Door Alarm, 125Db Door Alarm For Kids Safety, Door Window Sensor For Home Security
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189
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Window Door Alarm, 125Db Door Alarm For Kids Safety, Door Window Sensor For Home Security
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189
$21.99
Mengshen Wireless Home Door Window Burglar Alarm DIY Safety Security Alarm System Magnetic Sensor With Remote Control - 2 Alarm 1 Remote Control M642
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875
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Mengshen Wireless Home Door Window Burglar Alarm DIY Safety Security Alarm System Magnetic Sensor With Remote Control - 2 Alarm 1 Remote Control M642
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875
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3 Sets Of Sensor Alarm Magnetic Reed Switch MC-38B NC And NO Embedded Magnetic Gap Switch White For Door And Window Sensors For Home Security
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7
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3 Sets Of Sensor Alarm Magnetic Reed Switch MC-38B NC And NO Embedded Magnetic Gap Switch White For Door And Window Sensors For Home Security
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7
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4 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store AAA
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4 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store AAA
Amazon.com
$9.69
Dairzitv RC-36 Recessed NC Security Alarm Door Window Contact Sensor Magnetic Reed Switch 5 Pcs
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$9.69
Dairzitv RC-36 Recessed NC Security Alarm Door Window Contact Sensor Magnetic Reed Switch 5 Pcs
Amazon.com
$7.99
RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch, For Home Security And Burglar Alarm Systems, Sets Of 3, Brown
Amazon.com
18
$7.99
RC-36 NC Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch, For Home Security And Burglar Alarm Systems, Sets Of 3, Brown
Amazon.com
18
$29.38
Alula RE622 Series Cryptix Nanomax Door And Window Sensor, Small Profile, Encrypted Transmissions, Flexible Magnet Positioning, Quick Peel And Press
Amazon.com
Free shipping
$29.38
Alula RE622 Series Cryptix Nanomax Door And Window Sensor, Small Profile, Encrypted Transmissions, Flexible Magnet Positioning, Quick Peel And Press
Amazon.com
Free shipping
$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
$8.88
4 Pack Window Alarm Door Magnetic Sensor Alarm For Home Security System, Pool Door Alarms For Kids Safety Toddler Door Open Alert Sensor
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32
$8.88
4 Pack Window Alarm Door Magnetic Sensor Alarm For Home Security System, Pool Door Alarms For Kids Safety Toddler Door Open Alert Sensor
Amazon.com
32
KERUI 433MHz Wireless Door/Window Magnetic Sensor for GSM Home Security Alarm Systems
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Wired Metal Door Window Magnetic Sensor Detector Switch Alarm Home Garage Security Kit
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MC-38 Wired Door Window Sensor Magnetic Switch
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MC-38 Wired Door Window Sensor Magnetic Switch
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YouTubeThe Tech Lab
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VOXON Magnetic Door and Window Alarm Sensor 2 Pack From Amazon
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Shop Magnetic Window Sensor

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$13.99
Victorshome Magnetic Reed Switch RC-33 NC Recessed Wired Window Door Contact Sensor For Home Security And Burglar Alarm Systems 10 Pcs
Amazon.com
105
$13.99
Victorshome Magnetic Reed Switch RC-33 NC Recessed Wired Window Door Contact Sensor For Home Security And Burglar Alarm Systems 10 Pcs
Amazon.com
105
$7.97
QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
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475
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QWORK MC-31 Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch, White, Pack Of 10 With 40 Screws
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475
$14.99
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Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy
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25% off
$14.99
$19.99
Ring Alarm Contact Sensor - 2nd Gen | Instant Window & Door Alerts | Approximately 3-Year Battery Life | Slim Design Fits Any Frame | Easy
Amazon.com
25K+
$17.99
10 Sets Pack Of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed Switch Sensor With Double Side Tape
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230
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10 Sets Pack Of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed Switch Sensor With Double Side Tape
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230
$45.96
$59.99
DSC PG9303 Powerg Wireless Door Window Vanishing Magnetic Contact, 2-Way Encrypted Wireless Sensor, Slim Design, Easy Pull-Tab Enrollment, Compatible
Amazon.com
42
Free shipping
23% off
$45.96
$59.99
DSC PG9303 Powerg Wireless Door Window Vanishing Magnetic Contact, 2-Way Encrypted Wireless Sensor, Slim Design, Easy Pull-Tab Enrollment, Compatible
Amazon.com
42
$89.94
$99.99
Ring Alarm Contact Sensor 6-Pack - 2nd Gen | Monitor 6 Doors Or Windows | Instant Alerts | Approximately 3-Year Battery Life | Slim Design | Easy
Amazon.com
26K+
Free shipping
10% off
$89.94
$99.99
Ring Alarm Contact Sensor 6-Pack - 2nd Gen | Monitor 6 Doors Or Windows | Instant Alerts | Approximately 3-Year Battery Life | Slim Design | Easy
Amazon.com
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2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
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2 Pack Magnetic Reed Switch NO/NC, Wired Surface Mount Door Window Contact Sensor For Security Alarm, Silver
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Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
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12
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Magnetic Reed Switch MC-33C NC Recessed Wired Door Window Alarm, Magneti Door Switch, Contact Sensor, For Home Security And Burglar Alarm Systems,
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12
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Bnafes Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch White 4Pcs
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Bnafes Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch White 4Pcs
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Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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7
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Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC-36
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7
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2 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store
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64
$7.99
2 Pack Door Window Alarm, Magnetic Burglar Alert Sensor, Loud Door Alarms For Kids Safety, DIY For Home Security, Office Protection,Shopping Store
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64
$6.99
Hxchen MC-38 Door Window Contact Sensor Alarm Magnetic Reed Switch With Screws White - (2 Sets)
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$6.99
Hxchen MC-38 Door Window Contact Sensor Alarm Magnetic Reed Switch With Screws White - (2 Sets)
Amazon.com
$8.09
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC35
Amazon.com
$8.09
Uxcell N.C. Recessed Wired Security Window Door Contact Sensor Alarm Magnetic Reed Switch White RC35
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$5.69
Unlorspy 2 Sets XL-33C Normally Closed Recessed Alarm Magnetic Reed Switch, NC Type Window Door Contact Sensor Magnetic Contact Switch For Door And
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$5.69
Unlorspy 2 Sets XL-33C Normally Closed Recessed Alarm Magnetic Reed Switch, NC Type Window Door Contact Sensor Magnetic Contact Switch For Door And
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$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
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23
$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
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23
$20.99
GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
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16
$20.99
GAGALOR 20 Sets NC Magnetic Contacts Window Door Sensor Surface-Mounted Reed Switch Alarm With Double Side Tape
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16
$9.39
$10.19
BNYZWOT Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. 3/4 Inch Door Contact Position Switches DCS Work With All
Amazon.com
76
$9.39
$10.19
BNYZWOT Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. 3/4 Inch Door Contact Position Switches DCS Work With All
Amazon.com
76
$12.88
Bnafes RC-36 NC+NO Recessed Security Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets
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8
$12.88
Bnafes RC-36 NC+NO Recessed Security Window Door Contact Sensor Alarm Magnetic Reed Switch 2 Sets
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8