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$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
22K+
Free shipping
$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
22K+
$16.99
Switchbot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm And Door Sensor, Add Switchbot Hub To Make It Compatible With Alexa
Amazon.com
1K+
$16.99
Switchbot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm And Door Sensor, Add Switchbot Hub To Make It Compatible With Alexa
Amazon.com
1K+
$20.74
HEIMAN Wifi Door Sensor Smart Window Door Sensor Alarm, Contact Sensor For Home Security, Wireless Magnetic Door Open Detector And APP Remote
Amazon.com
101
$20.74
HEIMAN Wifi Door Sensor Smart Window Door Sensor Alarm, Contact Sensor For Home Security, Wireless Magnetic Door Open Detector And APP Remote
Amazon.com
101
$29.99
Door Chime When Door Opens, Fullhouse Door Sensor Wireless Entry Alarm With 1000ft Range, 60 Chimes And 5 Volume Levels For Business/Store/Home
Amazon.com
11
$29.99
Door Chime When Door Opens, Fullhouse Door Sensor Wireless Entry Alarm With 1000ft Range, 60 Chimes And 5 Volume Levels For Business/Store/Home
Amazon.com
11
$52.29
Lascar WIRELESS ALERT DC Door Contact Sensor, 2.4 Ghz, Wireless
Zoro.com
$52.29
Lascar WIRELESS ALERT DC Door Contact Sensor, 2.4 Ghz, Wireless
Zoro.com
$16.98
Tapo Door Sensor Mini, REQUIRES Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time
Amazon.com
452
$16.98
Tapo Door Sensor Mini, REQUIRES Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time
Amazon.com
452
$30.92
$154.20
Wireless Door Open Contact Sensor Alarm With 500 ft Range 58 Chimes And 5 Volume, Door Chimes When Door Is Opened,Door Alarm Sensor,Door Alarms,
Temu US
79% off
$30.92
$154.20
Wireless Door Open Contact Sensor Alarm With 500 ft Range 58 Chimes And 5 Volume, Door Chimes When Door Is Opened,Door Alarm Sensor,Door Alarms,
Temu US
$16.20
$32.28
2.4Ghz Wireless TTLOCK Door Sensor Door Contact Detection Windows Open Close Status DS2 Works With
AliExpress
Free shipping
49% off
$16.20
$32.28
2.4Ghz Wireless TTLOCK Door Sensor Door Contact Detection Windows Open Close Status DS2 Works With
AliExpress
Free shipping
$48.61
Qolsys DW Mini-S (2-Pack) Wireless Contact Sensor For Windows & Doors - S-Line Encrypted 319.5 Mhz - Window Alarm Sensor For Smart Home - Create
Amazon.com
10
Free shipping
$48.61
Qolsys DW Mini-S (2-Pack) Wireless Contact Sensor For Windows & Doors - S-Line Encrypted 319.5 Mhz - Window Alarm Sensor For Smart Home - Create
Amazon.com
10
$64.60
Wireless Sensor Window-Door Contact - Radio Tra...
delupe.com
$64.60
Wireless Sensor Window-Door Contact - Radio Tra...
delupe.com
$35.99
Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2
Amazon.com
739
Free shipping
$35.99
Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2
Amazon.com
739
$14.99
Simplisafe Entry Sensor - Window And Door Protection - Compatible With Gen 3 Home Security System
Amazon.com
4K+
$14.99
Simplisafe Entry Sensor - Window And Door Protection - Compatible With Gen 3 Home Security System
Amazon.com
4K+
$11.94
Seco-Larm Steel Door Recessed Contact With Leads N.C.1" Gap (White) - SM-4105-LQ/W
Amazon.com
$11.94
Seco-Larm Steel Door Recessed Contact With Leads N.C.1" Gap (White) - SM-4105-LQ/W
Amazon.com
$19.88
Staniot Lora Version 5-Years Battery Life Entry Sensor 500m Transmission Distance Wireless Contact Sensor Door Window Detector
AliExpress
$19.88
Staniot Lora Version 5-Years Battery Life Entry Sensor 500m Transmission Distance Wireless Contact Sensor Door Window Detector
AliExpress
$55.20
Lascar WIRELESS ALERT DC - Door Contact Monitor With Email Alerts
TEquipment
$55.20
Lascar WIRELESS ALERT DC - Door Contact Monitor With Email Alerts
TEquipment
$11.50
$19.17
TTLOCK App 2.4Ghz Door Sensor Contact Sensor Open Close Detector Smart Home Alarm Security
AliExpress
Free shipping
40% off
$11.50
$19.17
TTLOCK App 2.4Ghz Door Sensor Contact Sensor Open Close Detector Smart Home Alarm Security
AliExpress
Free shipping
$20.95
Seco-Larm SM-226L-3Q Overhead Door Magnetic Contact, 2.75-Inch Gap, Open/Closed Loop Circuits (3 Wires), 24" Armored Wire Leads, Weatherproof
Amazon.com
217
$20.95
Seco-Larm SM-226L-3Q Overhead Door Magnetic Contact, 2.75-Inch Gap, Open/Closed Loop Circuits (3 Wires), 24" Armored Wire Leads, Weatherproof
Amazon.com
217
$37.99
SECRUI Door Chime With Adjustable Volume -Wireless Entry Alert With 52 Chimes - 500ft Rage Door Open Sensor Alarm For Home/Business/Office/Store -
Amazon.com
2K+
Free shipping
$37.99
SECRUI Door Chime With Adjustable Volume -Wireless Entry Alert With 52 Chimes - 500ft Rage Door Open Sensor Alarm For Home/Business/Office/Store -
Amazon.com
2K+
$30.38
WBM Smart Wifi Door Sensor, Window Alarm Sensor, Wireless Security Alarm, App Control 4.39 H X 2.57 W X 2.57 D In
Wayfair
$30.38
WBM Smart Wifi Door Sensor, Window Alarm Sensor, Wireless Security Alarm, App Control 4.39 H X 2.57 W X 2.57 D In
Wayfair
$33.99
Window And Door Alarm When Opened (5 Pack) For Kids Safety/Home Security, Wireless Sliding Door Opening Sensor Alarms For Dementia, 120Db Burglar
Amazon.com
47
$33.99
Window And Door Alarm When Opened (5 Pack) For Kids Safety/Home Security, Wireless Sliding Door Opening Sensor Alarms For Dementia, 120Db Burglar
Amazon.com
47
$69.26
Richelieu Hardware TRESCO Freedim Wireless Door Sensor Satin Nickel LWLDSNI
DkHardware.com
$69.26
Richelieu Hardware TRESCO Freedim Wireless Door Sensor Satin Nickel LWLDSNI
DkHardware.com
$21.89
Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm, Door Alarms For Kids Safety, Easy Installation Doorbell Alarms For
Amazon.com
93
$21.89
Security Door Window Alarm, 90DB Wireless Sensor Door Window Burglar Alarm, Door Alarms For Kids Safety, Easy Installation Doorbell Alarms For
Amazon.com
93
$30.15
Honeywell Ademco 958 Overhead Door Contacts
Amazon.com
201
$30.15
Honeywell Ademco 958 Overhead Door Contacts
Amazon.com
201
$39.17
8-Pack Smart Door And Window Sensor, 2.4 G Wifi Door Sensor, Tuya/Smart Life Contact Sensors For Home, Window Alarm Sensor,Tuya Smart Devices,Door
Temu US
1
$39.17
8-Pack Smart Door And Window Sensor, 2.4 G Wifi Door Sensor, Tuya/Smart Life Contact Sensors For Home, Window Alarm Sensor,Tuya Smart Devices,Door
Temu US
1
$24.99
Bnafes Magnetic Reed Switch MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch - (10 Sets)
Amazon.com
$24.99
Bnafes Magnetic Reed Switch MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch - (10 Sets)
Amazon.com
$45.60
$71.14
Frient 20202000 Entry Sensor Pro | Door And Window Contact | Monitoring For A Secure Home | Tamper Protection | Magnetic | Detec
episodecloud.com
35% off
$45.60
$71.14
Frient 20202000 Entry Sensor Pro | Door And Window Contact | Monitoring For A Secure Home | Tamper Protection | Magnetic | Detec
episodecloud.com
$13.54
$80.99
2/4Pcs Intelligent Door Magnet Sensor - Supports Wifi, Connects To Smart Life Applications, Compatible With Alexa And, Window Alarm,Door Sensor
Temu US
83% off
$13.54
$80.99
2/4Pcs Intelligent Door Magnet Sensor - Supports Wifi, Connects To Smart Life Applications, Compatible With Alexa And, Window Alarm,Door Sensor
Temu US
$23.99
Sanjie Adjustable Volume Door Alarm Sensor For Home Security & Child Safety, 120Db Burglar Alarm With 4 Modes - Wireless Window & Entry Alert For
Amazon.com
66
$23.99
Sanjie Adjustable Volume Door Alarm Sensor For Home Security & Child Safety, 120Db Burglar Alarm With 4 Modes - Wireless Window & Entry Alert For
Amazon.com
66
$87.00
GE Security 1076H-N Recessed Steel Door Contact (White)
Keyless Access Locks
$87.00
GE Security 1076H-N Recessed Steel Door Contact (White)
Keyless Access Locks
$8.99
Network Technologies E-M-DCS3 Door Contact Sensor
Zoro.com
$8.99
Network Technologies E-M-DCS3 Door Contact Sensor
Zoro.com
$9.95
2GIG Thin Door/Window Contact
Qifor
$9.95
2GIG Thin Door/Window Contact
Qifor
$1.70
$2.26
5PCS Magnetic Door Window Contact Sensor Alarm Reed Switch Security Home Burglar Alarm NO/NC
AliExpress
24% off
$1.70
$2.26
5PCS Magnetic Door Window Contact Sensor Alarm Reed Switch Security Home Burglar Alarm NO/NC
AliExpress
$4.95
$10.12
Wifi Door Sensor Magnetic Window Open Closed Alarm Detector With Ewelink APP Alert Notice For Home
AliExpress
51% off
$4.95
$10.12
Wifi Door Sensor Magnetic Window Open Closed Alarm Detector With Ewelink APP Alert Notice For Home
AliExpress
$2.15
$4.01
Aqara Smart Door Window Sensor Zigbee Wireless Connection Mini Door Sensor Work With Mi Home APP For
AliExpress
Free shipping
46% off
$2.15
$4.01
Aqara Smart Door Window Sensor Zigbee Wireless Connection Mini Door Sensor Work With Mi Home APP For
AliExpress
Free shipping
$50.00
DSC WS4945 Wireless Door Window Contact Transmitter
eBay.com
52
$50.00
DSC WS4945 Wireless Door Window Contact Transmitter
eBay.com
52
$27.79
Door Chime, Door Sensor Chime For Door Opens - Door Ringer With 500ft Operating Range 52 Chime Adjustable Volume Mute Mode LED Indicators -Entry
Amazon.com
172
$27.79
Door Chime, Door Sensor Chime For Door Opens - Door Ringer With 500ft Operating Range 52 Chime Adjustable Volume Mute Mode LED Indicators -Entry
Amazon.com
172
How to Install Smart Security Wireless Door Contacts
1:58
Find in video from 00:20Setting Up Door Contacts
How to Install Smart Security Wireless Door Contacts
12.8K viewsJan 11, 2016
YouTubeAlarm New England
How To Install Honeywell Wireless Door/Window Contacts
5:07
Find in video from 0:00Introduction to Door and Window Contacts
How To Install Honeywell Wireless Door/Window Contacts
46.6K viewsJul 17, 2013
YouTubemydiysecurity
Comparing SONOFF Smart Wireless Door Contacts: WiFi vs Zigbee
2:01
Comparing SONOFF Smart Wireless Door Contacts: WiFi vs Zigbee
17.7K views7 months ago
TikTokuntamedtech
RADION Wireless Door/Window Contact Unbox and Assemble: RFDW-SM RADION Contact SM
1:59
RADION Wireless Door/Window Contact Unbox and Assemble: RF…
9.2K viewsJul 12, 2016
YouTubeBosch - Intrusion Systems
How to Program as DSC Wireless door contacts
7:42
How to Program as DSC Wireless door contacts
13.4K viewsOct 6, 2020
YouTubePink Dude
DSC Neo - Installer - Wireless Overhead Door Contacts - Part 1
6:08
Find in video from 00:36PG9309 Wireless Contacts
DSC Neo - Installer - Wireless Overhead Door Contacts - Part 1
562 viewsNov 19, 2022
YouTubeGH Knowledge - Low Voltage, Security, Camera
Honeywell Ademco 5816 Wireless Door Contact Demonstration w/ Monitronics 6150RFMT (1st Generation)
0:33
Honeywell Ademco 5816 Wireless Door Contact Demonstration w/ M…
994 views6 months ago
YouTube★ Loganetics ★
2:00
WIRELESS DOOR AND WINDOW SENSOR Installation | evohome se…
144.9K viewsSep 19, 2017
YouTubeHoneywell Home
2:20
How to Program Wireless WS-4945 Door/Window Contact into DSC Im…
75.3K viewsJun 18, 2014
YouTubeGeoArm Security (GeoAlarm)
3:28
Find in video from 0:00Introduction to Wireless Doorbell
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3.2K viewsSep 7, 2022
YouTubeWhat We Recommend?
6:55
Installing PowerG Wireless Outdoor Magnetic Contact on Gates and Ot…
169 views5 months ago
YouTubeZions Security Alarms
5:14
Find in video from 01:00Drilling the Contact Sensor
Contact Sensor | "Invisible" Door Installation
218.2K viewsNov 7, 2012
YouTubeAxxessAutomation
1:44
Find in video from 01:10Reinstalling the Contact
DSC Wireless Door Contact battery replacement
11.2K viewsFeb 10, 2016
YouTubeAll Systems Integrated
5:57
Find in video from 00:03Introduction to Magnetic Door Contacts
How to install a magnetic door contact | Reed switch
381.3K viewsJan 25, 2014
YouTubeUltimate Handyman
4:34
Find in video from 03:14Installing the Contact I
DSC PG9307 Recessed Wireless Door/Window Sensor Installation
19.2K viewsAug 24, 2022
YouTubeAlarm System Store
1:23
⚫ Ajax Fibra : DoorProtect, DoorProtect Plus and DoorProtec…
2.1K viewsMay 13, 2024
YouTubeVisiotech Security
6:51
Find in video from 00:03Introduction to PowerG Wireless Outdoor Magnetic Contact
PowerG Wireless Outdoor Magnetic Contact - Installation Instructions
12.9K viewsApr 3, 2019
YouTubeDSC
2:11
Find in video from 00:43Removing the Door Contact
Tech Tips Video: Replace a Battery in a DSC Vanishing Slim Line Wire…
50.9K viewsFeb 4, 2016
YouTubeFire Monitoring Of Canada Inc
26:03
Showcasing The PowerG Door/Window Contact Lineup
1K views10 months ago
YouTubeAlarm System Store
4:00
How to set up your ADT Door/Window Sensors
31.1K viewsJun 6, 2024
YouTubeADT
1:05
Smart Door Sensor: WiFi Door and Window Sensor, Wireless Design, …
Oct 26, 2023
amazon
1:40
How to Replace the Battery for a Door & Window Sensor
140.8K viewsFeb 14, 2021
YouTubeGuardian Protection
1:33
Door Chime, Satisure Wireless Door Open Contact Sensor Alarm Chim…
3 viewsMay 4, 2023
amazon
0:40
Wired Alarm Heavy Duty Garage Door Magnetic Contacts with Adju…
10 months ago
amazon
1:47
Honeywell 5811 : How to Change the Battery in your Wireless Door/Win…
45.6K viewsApr 3, 2015
YouTubeGeoArm Security (GeoAlarm)
4:37
Find in video from 03:09Installing the Door Contact
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31.3K viewsJan 11, 2013
YouTubeAlarm Grid
2:11
Find in video from 01:36Sending the Contact
How to Setup Paradox DCTXP2, 2-Zone Wireless Contact
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YouTubeJasonTech
1:33
DSC Wireless Recessed Door Contact battery replacement
4K viewsFeb 10, 2016
YouTubeAll Systems Integrated
1:46
Find in video from 01:08Reinstalling the Contact Tab
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YouTubeAll Systems Integrated
1:59
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Shop wireless door contacts

Sponsored
About our ads
$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
22K+
Free shipping
$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
22K+
$16.99
Switchbot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm And Door Sensor, Add Switchbot Hub To Make It Compatible With Alexa
Amazon.com
1K+
$16.99
Switchbot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm And Door Sensor, Add Switchbot Hub To Make It Compatible With Alexa
Amazon.com
1K+
$20.74
HEIMAN Wifi Door Sensor Smart Window Door Sensor Alarm, Contact Sensor For Home Security, Wireless Magnetic Door Open Detector And APP Remote
Amazon.com
101
$20.74
HEIMAN Wifi Door Sensor Smart Window Door Sensor Alarm, Contact Sensor For Home Security, Wireless Magnetic Door Open Detector And APP Remote
Amazon.com
101
$29.99
Door Chime When Door Opens, Fullhouse Door Sensor Wireless Entry Alarm With 1000ft Range, 60 Chimes And 5 Volume Levels For Business/Store/Home
Amazon.com
11
$29.99
Door Chime When Door Opens, Fullhouse Door Sensor Wireless Entry Alarm With 1000ft Range, 60 Chimes And 5 Volume Levels For Business/Store/Home
Amazon.com
11
$52.29
Lascar WIRELESS ALERT DC Door Contact Sensor, 2.4 Ghz, Wireless
Zoro.com
$52.29
Lascar WIRELESS ALERT DC Door Contact Sensor, 2.4 Ghz, Wireless
Zoro.com
$16.98
Tapo Door Sensor Mini, REQUIRES Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time
Amazon.com
452
$16.98
Tapo Door Sensor Mini, REQUIRES Tapo Hub, Long Battery Life W/Sub-1G Low-Power Wireless Protocol, Contact Sensor, 15mm Wide Gap Allowed, Real-Time
Amazon.com
452
$30.92
$154.20
Wireless Door Open Contact Sensor Alarm With 500 ft Range 58 Chimes And 5 Volume, Door Chimes When Door Is Opened,Door Alarm Sensor,Door Alarms,
Temu US
79% off
$30.92
$154.20
Wireless Door Open Contact Sensor Alarm With 500 ft Range 58 Chimes And 5 Volume, Door Chimes When Door Is Opened,Door Alarm Sensor,Door Alarms,
Temu US
$16.20
$32.28
2.4Ghz Wireless TTLOCK Door Sensor Door Contact Detection Windows Open Close Status DS2 Works With
AliExpress
Free shipping
49% off
$16.20
$32.28
2.4Ghz Wireless TTLOCK Door Sensor Door Contact Detection Windows Open Close Status DS2 Works With
AliExpress
Free shipping
$48.61
Qolsys DW Mini-S (2-Pack) Wireless Contact Sensor For Windows & Doors - S-Line Encrypted 319.5 Mhz - Window Alarm Sensor For Smart Home - Create
Amazon.com
10
Free shipping
$48.61
Qolsys DW Mini-S (2-Pack) Wireless Contact Sensor For Windows & Doors - S-Line Encrypted 319.5 Mhz - Window Alarm Sensor For Smart Home - Create
Amazon.com
10
$64.60
Wireless Sensor Window-Door Contact - Radio Tra...
delupe.com
$64.60
Wireless Sensor Window-Door Contact - Radio Tra...
delupe.com
$35.99
Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2
Amazon.com
739
Free shipping
$35.99
Sanjie Door Chime, Door Open Contact Sensor Alarm For Business/Store/Home/Office When Entering, With 500 ft Range,26 Chimes 5 Adjustable Volume 2
Amazon.com
739
$14.99
Simplisafe Entry Sensor - Window And Door Protection - Compatible With Gen 3 Home Security System
Amazon.com
4K+
$14.99
Simplisafe Entry Sensor - Window And Door Protection - Compatible With Gen 3 Home Security System
Amazon.com
4K+
$11.94
Seco-Larm Steel Door Recessed Contact With Leads N.C.1" Gap (White) - SM-4105-LQ/W
Amazon.com
$11.94
Seco-Larm Steel Door Recessed Contact With Leads N.C.1" Gap (White) - SM-4105-LQ/W
Amazon.com
$19.88
Staniot Lora Version 5-Years Battery Life Entry Sensor 500m Transmission Distance Wireless Contact Sensor Door Window Detector
AliExpress
$19.88
Staniot Lora Version 5-Years Battery Life Entry Sensor 500m Transmission Distance Wireless Contact Sensor Door Window Detector
AliExpress
$55.20
Lascar WIRELESS ALERT DC - Door Contact Monitor With Email Alerts
TEquipment
$55.20
Lascar WIRELESS ALERT DC - Door Contact Monitor With Email Alerts
TEquipment
$11.50
$19.17
TTLOCK App 2.4Ghz Door Sensor Contact Sensor Open Close Detector Smart Home Alarm Security
AliExpress
Free shipping
40% off
$11.50
$19.17
TTLOCK App 2.4Ghz Door Sensor Contact Sensor Open Close Detector Smart Home Alarm Security
AliExpress
Free shipping
$20.95
Seco-Larm SM-226L-3Q Overhead Door Magnetic Contact, 2.75-Inch Gap, Open/Closed Loop Circuits (3 Wires), 24" Armored Wire Leads, Weatherproof
Amazon.com
217
$20.95
Seco-Larm SM-226L-3Q Overhead Door Magnetic Contact, 2.75-Inch Gap, Open/Closed Loop Circuits (3 Wires), 24" Armored Wire Leads, Weatherproof
Amazon.com
217
$37.99
SECRUI Door Chime With Adjustable Volume -Wireless Entry Alert With 52 Chimes - 500ft Rage Door Open Sensor Alarm For Home/Business/Office/Store -
Amazon.com
2K+
Free shipping
$37.99
SECRUI Door Chime With Adjustable Volume -Wireless Entry Alert With 52 Chimes - 500ft Rage Door Open Sensor Alarm For Home/Business/Office/Store -
Amazon.com
2K+