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Ring Alarm Contact Sensor 6-Pack - 2…

7939WG-WH - Ademco Surface …

Battery · Cost-Effective · Easy to install · Reliable Protection · Ring

Ring Alarm Contact Sensor 2-Pack - 2…

Sopepoyie RC-36 NC/NO Recesse…

$17.99

Amazon.com

Sanjie Door Chime, Door Open Conta…

Tokatuker NC NO Magnetic Switch …

RC-35 NC/NO Recessed Wired …

Door Chime When Door Opens, Fullh…

Door Chime, METAK Wireless …

Battery · Cost-Effective · Reliable Protection · Ring · Seamless Connectivity

Ring Alarm Contact Sensor - 2nd Ge…

Honeywell Ademco 958 Overhead Do…

Bnafes RC-36 Magnetic Door S…

Ring Retrofit Alarm Kit | Convert Wire…

4X Magnetic Sensor Home Door Wind…

$5.39

Walmart

10 Sets Pack Of Wired Surface Mo…

Heavy Duty Wired Alarm Garage Do…

Ball Hidden Sensor Door Jam Recess…

Door Chime, Door Sensor Chime Fo…

Bnafes Magnetic Reed Switch MC-…

E-Outstanding 2 Pcs Recessed Do…

Heavy Duty Wired Alarm Garage Do…

Ball Hidden Sensor Door Jam Recess…

Door Chime, Door Sensor Chime Fo…

Bnafes Magnetic Reed Switch MC-…

E-Outstanding 2 Pcs Recessed Do…

Bnafes Recessed Security Alarm Co…

Sonew 10Pcs NC Recessed Wired …

Wireless PIR Motion Sensor Detector …

10Pk White Terminal Pill Mag…

GAGALOR 4 Sets NC Wired Door Al…

MC-33C Normally Closed Recessed …

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Safety Technology International, Inc. …

Uxcell Rolling Door Contact Magnetic …

Safety Technology International Wirel…

$27.18

Grainger

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  Heyiarbeit NC Recessed Door Sens…
  $9.99
  A
  Amazon.com
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  Magnetic Sensor Window Door Con…
  $14.64
  E
  eBay.com
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  Honeywell Ademco 958 Overhead …
  $28.00
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  Magnetic Alarm Door Contact Sens…
  $14.82
  U
  US eBay
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  Nc/No Recessed Wired Rc-33 Wind…
  $25.05
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  eBay
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  Alarm Window And Door Contact S…
  $19.99
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  Ring
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  Heyiarbeit 2Pcs NC Recessed Wire…
  $12.19
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  Amazon.com
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  Door Alarm Contact Sensor (2-Packs)
  $68.98
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  huanker
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  Door Alarm Contact Sensor (2-Packs)
  $68.98
  Qietaw
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  Uxcell Home Wired Alarm Security …
  $9.99
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  1 Pcs White Recessed Door Contac…
  $9.80
  A
  Amazon.com
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  2Pairs Smart Door Sensor, Wifi Win…
  $11.43
  $13.62
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  Walmart
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  Uxcell Home Wired Alarm Security …
  $8.59
  A
  Amazon.com
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  1 Mini White Recessed Door Contac…
  $7.25
  A
  Amazon.com
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  Rc-36 NO Recessed Wired Door Co…
  $9.99
  W
  Walmart
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  Wireless 433Mhz Or 315Mhz Door …
  $4.87
  A
  Aliexpress
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  1 Mini Recessed Door Contacts Bro…
  $7.03
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  Rc-33 NO Recessed Wired Door Co…
  $10.49
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  2-Pack Wired Door Window Contac…
  $15.63
  A
  Amazon.com
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  PATIKIL N.C. Wired Door Alarm Ma…
  $9.99
  A
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  Heyiarbeit 2Pcs NO Recessed Wire…
  $18.99
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  Yiemeen Magnetic Door Window Co…
  $9.42
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  2-Pack Wired Magnetic Contact Sen…
  $14.32
  A
  Amazon.com
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  Alarm Contact Sensor 2Pcs. (2Nd G…
  $67.60
  G
  Grooves.Land USA
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  Magnetic Door Window Contact Sen…
  $0.40
  $0.72
  A
  Aliexpress
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  MC-31 Wired Surface-Mounted NC …
  $10.05
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  4.9
  14 ratings
  Ring Alarm Outdoor Contact Senso…
  $89.99
  C
  Crutchfield
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  Home Alarm Door/Window Surface …
  $11.00
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  3 Pcs White Door Contacts Surface …
  $16.58
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  Uxcell Door Window NO/NC Recess…
  $14.09
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  MC-31 Surface Mounting Wired Doo…
  $9.49
  B
  Bed Bath & Beyond
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  Home Alarm Door/Window Surface …
  $12.00
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  US eBay
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  Wired Magnetic Contact Sensors Fo…
  $14.32
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  Amazon.com
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  Heyiarbeit 3Pcs NO Recessed Doo…
  $15.59
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  1-5PCS RC-33 NC/NO Recessed W…
  $1.91
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  US eBay
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  1-5PCS RC-33 NC/NO Recessed W…
  $2.39
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  eBay.com
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GAGALOR NO&NC 3 Wires Magnetic …
$16.99
Amazon.com
4.5
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Door Alarms For Kids Safety, VOX…
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4.5
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Door Window Alarm When Opened Fo…
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$5.00 / 1 ct
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4.5
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Victorshome Magnetic Reed S…
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4.0
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136
Hxchen MC-33C Normally Closed …
$15.99
$5.00 / 1 ct
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4.0
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Uxcell Home Wired Alarm Security M…
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harfington
3.0
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Aoauto Home Security Wired Ro…
$12.99
Amazon.com
Magnetic Reed Switch RC-35 NC/…
$20.89
$4.18 / 1 ct
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5.0
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Door Chime, DC 12V, Wireless Do…
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Home Depot
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Door Chime, Daytech Wireless …
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4.0
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Uxcell N.C. Recessed Wired …
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Eufy Security Entry Sensor, Detects …
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Yistech Caregiver Pager Door Alarm…
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Security Door Window Alarm, 90…
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RC-36 NC+NO Recessed Wired …
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QWORK MC-31 Wired Surface-Mo…
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Hxchen 3 Sets MC-31B NC & NO Do…
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20X Magnetic Sensor Home Do…
$20.12
Walmart
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DSC SECURITY WS4945 WIRELE…
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183
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Wireless Door Chimes When Do…
$35.99
Amazon.com
4.5
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613
- Door & Window Alarms | Smoke Detectors & Sensors
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- Shop Ring Alarm Contact Sensors - Free Lifetime Tech Support
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Door & Window Alarms | Smoke Detectors & Sensors

5 Best Home Security Systems | 5 Best Home Alarms 2025

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