Door Ajar Sensor(119)
Uses item details. Price when purchased online
50+ bought since yesterday Philips Personal Security Window and Door Alarm, 2-Pack From $15.97
2 options
Available in additional 2 optionsFrom$1597
Philips Personal Security Window and Door Alarm, 2-Pack
8624.5 out of 5 Stars. 862 reviews
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Best seller Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)
Bitiwend Door Alarm Sensor Bitiwend Wireless Door Chime Alert for Kids Safety Home (1 Receiver+3 Sensors)
1244.1 out of 5 Stars. 124 reviews
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Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included) From $10.49
2 options
Available in additional 2 optionsFrom$1049
Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included)
2083.8 out of 5 Stars. 208 reviews
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Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black From $13.58
From$1358
Sgokeen Wireless Door Sensor Door Entry Chime, Door Open Alert with 600ft Range LED Indicators Receivers + Sensors Wireless Door Alarm,58 Ringtones Black
1084.2 out of 5 Stars. 108 reviews
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Best seller Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System Was $49.99
Entry Sensor - Window and Door Protection - Compatible with Gen 3 Home Security System
324.7 out of 5 Stars. 32 reviews
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Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office
Window Alarm, 10-Pack Wireless Window Door Entry Alarm Burglar Security Alarm Magnetic Sensor Ideal for Home, Garage, Apartment, Dorm, Office
104.4 out of 5 Stars. 10 reviews
Deal SanJie Door Sensor Chime When Door Opens, Door Entry Chime for Business/Home/Office/Store,500 FT Range,26 Chimes 5 Adjustable Volume Door Ringer Alert 2 Sensors + 1 Receivers $22.49 Was $25.19
Now$2249
current price Now $22.49, Was $25.19$25.19
SanJie Door Sensor Chime When Door Opens, Door Entry Chime for Business/Home/Office/Store,500 FT Range,26 Chimes 5 Adjustable Volume Door Ringer Alert 2 Sensors + 1 Receivers
134.7 out of 5 Stars. 13 reviews
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Wireless Magnetic Sensor Burglar Alarm for Doors and Windows, 90dB Loud Sound Alert, Easy Peel and Stick Installation for Home Security $6.28 Was $6.99
Now$628
current price Now $6.28, Was $6.99$6.99
Wireless Magnetic Sensor Burglar Alarm for Doors and Windows, 90dB Loud Sound Alert, Easy Peel and Stick Installation for Home Security
SimpliSafe Entry ES3 Door Sensor White Magnetic Home Security (Latest) $17.99
$1799
current price $17.99SimpliSafe Entry ES3 Door Sensor White Magnetic Home Security (Latest)
65 out of 5 Stars. 6 reviews
Vivint dw12 window and door sensor $32.97
$3297
current price $32.97Vivint dw12 window and door sensor
55 out of 5 Stars. 5 reviews
KFFKFF Wireless Door Chime, DC 12V, Entry Alert System with 656 ft Range, 58 Melodies & 5 Adjustable Volume Levels, Door Sensor Alarm for Business, Store, Home, or Office Use $16.99 $16.99/ca
$1699
current price $16.99$16.99/ca
KFFKFF Wireless Door Chime, DC 12V, Entry Alert System with 656 ft Range, 58 Melodies & 5 Adjustable Volume Levels, Door Sensor Alarm for Business, Store, Home, or Office Use
114.1 out of 5 Stars. 11 reviews
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Smart WiFi Door and Window Sensor, No Hub Required Wireless Contact Sensor with App Alerts, Compatible with Alexa & Google Assistant(White, Battery Not Included) From $12.49
From$1249
Smart WiFi Door and Window Sensor, No Hub Required Wireless Contact Sensor with App Alerts, Compatible with Alexa & Google Assistant(White, Battery Not Included)
CallToU Door Sensor Alarm, Portable Door Chime with Adjustable Volume, 500ft Range, Entry Alert for Home, Office, or Business, 2 Sensors + 1 Receiver From $20.99
2 options
Available in additional 2 optionsFrom$2099
CallToU Door Sensor Alarm, Portable Door Chime with Adjustable Volume, 500ft Range, Entry Alert for Home, Office, or Business, 2 Sensors + 1 Receiver
11 out of 5 Stars. 1 reviews
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2 Pack Door Window Alarm, 120dB Magnetic Entry Alert Door Alarm When Opened Wireless Door Sensor Alarm for Office Store Home Security, White $15.99
$1599
current price $15.992 Pack Door Window Alarm, 120dB Magnetic Entry Alert Door Alarm When Opened Wireless Door Sensor Alarm for Office Store Home Security, White
Deal CallToU Caregiver Pager 500FT Door Sensor Alarm for Dementia, Alzheimers, Patients & Home Safety $30.59 Was $35.99
Now$3059
current price Now $30.59, Was $35.99$35.99
CallToU Caregiver Pager 500FT Door Sensor Alarm for Dementia, Alzheimers, Patients & Home Safety
25 out of 5 Stars. 2 reviews
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Deal CallTou Wireless Door Sensor Alarm Wander Alert for Dementia Elderly Patient Alzheimer Door Open Chime Monitoring for Caregiver Home Care $35.99 Was $39.99
Now$3599
current price Now $35.99, Was $39.99$39.99
CallTou Wireless Door Sensor Alarm Wander Alert for Dementia Elderly Patient Alzheimer Door Open Chime Monitoring for Caregiver Home Care
82.9 out of 5 Stars. 8 reviews
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Wireless Door Alarms for Home Security with Remote, 130dB Door and Window Alarms Sensors, (Battery-Powered), Kids Safety, Dementia Patients, Pool Door Alarm (1-Pack) From $18.99
From$1899
Wireless Door Alarms for Home Security with Remote, 130dB Door and Window Alarms Sensors, (Battery-Powered), Kids Safety, Dementia Patients, Pool Door Alarm (1-Pack)
114.3 out of 5 Stars. 11 reviews
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Homezone Wi-Fi Smart Wireless Window/Door Alarm Sensor, White, 1 Alarm Included From $19.97
2 options
Available in additional 2 optionsFrom$1997
Homezone Wi-Fi Smart Wireless Window/Door Alarm Sensor, White, 1 Alarm Included
364.2 out of 5 Stars. 36 reviews
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Bitiwend Door Chime, Wireless Door Alarm Sensor with 600ft Range 58 Chimes Adjustable Volume Mute Mode LED Indicators, $12.99
$1299
current price $12.99Bitiwend Door Chime, Wireless Door Alarm Sensor with 600ft Range 58 Chimes Adjustable Volume Mute Mode LED Indicators,
674.4 out of 5 Stars. 67 reviews
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Qolsys QS1135-840 IQ Wireless S-Line Encrypted Mini Door/Window Sensor, White $36.99
$3699
current price $36.99Qolsys QS1135-840 IQ Wireless S-Line Encrypted Mini Door/Window Sensor, White
34.3 out of 5 Stars. 3 reviews
Door and Window Alarm, 4-Pack Wireless Magnetic Security Sensor with 90dB Loud Siren, Tool-Free Adhesive Entry Alert for Home, Gates and Cabinets $6.72
$672
current price $6.72Door and Window Alarm, 4-Pack Wireless Magnetic Security Sensor with 90dB Loud Siren, Tool-Free Adhesive Entry Alert for Home, Gates and Cabinets
3-in-1 Alarm - Door Left Open Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Door Ajar Alarm, Close Gate Reminder, 80 to 120 dB, Time Delay Alert for Freezer, Gate, Shop. (Black) $59.48
$5948
current price $59.483-in-1 Alarm - Door Left Open Chime with Delay, 0/5/10/30/60 Seconds, 2/5 Minutes, Door Ajar Alarm, Close Gate Reminder, 80 to 120 dB, Time Delay Alert for Freezer, Gate, Shop. (Black)
YoLink LoRa Smart Door & Window Sensor: Up to 1/4 Mile Open-Air Range, Door Left-Open Reminders, up to 5 Year Battery Life, Alexa, IFTTT, Home Assistant, Home Security From $16.99
6 options
Available in additional 6 optionsFrom$1699
YoLink LoRa Smart Door & Window Sensor: Up to 1/4 Mile Open-Air Range, Door Left-Open Reminders, up to 5 Year Battery Life, Alexa, IFTTT, Home Assistant, Home Security
364.6 out of 5 Stars. 36 reviews
Portable Wireless Touch Sensor, Electronic Door Handle Alarm,Door Knob Alarm $11.94
$1194
current price $11.94Portable Wireless Touch Sensor, Electronic Door Handle Alarm,Door Knob Alarm
12 out of 5 Stars. 1 reviews
SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System $41.00
$4100
current price $41.00SimpliSafe 4 Pack Entry Sensor ES3 Door Window Protection Magnetic Home Security System
23.5 out of 5 Stars. 2 reviews
Fosmon WaveLink Wireless Doorbell Chime, Home Security System Alarm When Door Opens, Magnetic Door Alarm And Sensor For Store, Restaurant, Business, Kids, Elderly & More, 1 Sensor 1 Receiver From $9.99
8 options
Available in additional 8 optionsFrom$999
Fosmon WaveLink Wireless Doorbell Chime, Home Security System Alarm When Door Opens, Magnetic Door Alarm And Sensor For Store, Restaurant, Business, Kids, Elderly & More, 1 Sensor 1 Receiver
1434 out of 5 Stars. 143 reviews
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M Buder Infrared Sensor Doorbell Accurate Detection Wireless Door Entry Alarm for Business Shop Store, 4.72 inches / 12 cm $24.49
$2449
current price $24.49M Buder Infrared Sensor Doorbell Accurate Detection Wireless Door Entry Alarm for Business Shop Store, 4.72 inches / 12 cm
Zigbee Door Sensor Window Sensor Tuya Door Opener Detector Wireless Smart Door Sensor Alarm for Home Security&Automation,1 x Smart Door Sensor,White $11.59
$1159
current price $11.59Zigbee Door Sensor Window Sensor Tuya Door Opener Detector Wireless Smart Door Sensor Alarm for Home Security&Automation,1 x Smart Door Sensor,White
GJX Touch Sensor Alarm,Vibration Door Alarm,120Db Touch Sensor Door Handle Alarm Anti-Theft Vibration Window Burglar Alert Home Security $9.04
$904
current price $9.04GJX Touch Sensor Alarm,Vibration Door Alarm,120Db Touch Sensor Door Handle Alarm Anti-Theft Vibration Window Burglar Alert Home Security
Infrared Sensor Alarm, Security Detector, Photoelectric Sensor, Magnetic Single Beam Detector, Waterproof Sensor Alarm for Home Gate, Front Door and Window Safety Protection,Black Was $15.49
Infrared Sensor Alarm, Security Detector, Photoelectric Sensor, Magnetic Single Beam Detector, Waterproof Sensor Alarm for Home Gate, Front Door and Window Safety Protection,Black
WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home $11.95
$1195
current price $11.95WIFI Wireless Smart Magnetic Door Window Sensor Detector Alarm For Google Home
43 out of 5 Stars. 4 reviews
GREENCYCLE Wireless Door Open Sensor Chime, Door Entry Chime with Adjustable Volume, 48 Chimes, Nightlight Function, Magnetic Door Chime for Business Home Office Store, 1 Receiver and 2 Sensors From $19.90
From$1990
GREENCYCLE Wireless Door Open Sensor Chime, Door Entry Chime with Adjustable Volume, 48 Chimes, Nightlight Function, Magnetic Door Chime for Business Home Office Store, 1 Receiver and 2 Sensors
514.3 out of 5 Stars. 51 reviews
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Tuya Smart WiFi Door Sensor 80dB Sound Window Sensor Smart Life Arm Disarm Door Sensor APP Alert Alarm Door Sensor,1 x Tuya smart door magnetic sensor,White $13.05
$1305
current price $13.05Tuya Smart WiFi Door Sensor 80dB Sound Window Sensor Smart Life Arm Disarm Door Sensor APP Alert Alarm Door Sensor,1 x Tuya smart door magnetic sensor,White
Pack of 6 Security Window Door Alarm DIY Home Protection Burglar Alert Sensor !! $13.25
$1325
current price $13.25Pack of 6 Security Window Door Alarm DIY Home Protection Burglar Alert Sensor !!
1353.7 out of 5 Stars. 135 reviews
GJX 2Pcs ABS Door Sensor, Peel and Stick Installation, Simple and Quick Window Alarms, For Instant Property Perimeter Alert 0.3 x 0.15 x 4.72 in Alarm System, Silver $13.58
$1358
current price $13.58GJX 2Pcs ABS Door Sensor, Peel and Stick Installation, Simple and Quick Window Alarms, For Instant Property Perimeter Alert 0.3 x 0.15 x 4.72 in Alarm System, Silver
VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver) $56.91
$5691
current price $56.91VEVOR Door Chime, DC 12V, Wireless Door Open Contact Sensor Alarm Chime with 656 ft Range, Remote Control with App, Doors Ringer Alert for Business, Store, Home, Office (6 Sensors + 1 Receiver)
33.7 out of 5 Stars. 3 reviews
GJX ABS Door Alarms When Opened, Peel and Stick Installation, Highly Accessible and Timely Window Alarms, For Door & Window Intrusion Alert 0.25 x 0.2 x 0.04 in Door Alarm, Silver From $10.65
2 options
Available in additional 2 optionsFrom$1065
GJX ABS Door Alarms When Opened, Peel and Stick Installation, Highly Accessible and Timely Window Alarms, For Door & Window Intrusion Alert 0.25 x 0.2 x 0.04 in Door Alarm, Silver
130dB Loud Door Alarm Adjustable Volume, 5 Feature Modes Door Alarms for Kids Safety Home Security Pool Safety Alzheimers Door Window Open Sensor Wireless Door Alarm with Remote $19.99
$1999
current price $19.99130dB Loud Door Alarm Adjustable Volume, 5 Feature Modes Door Alarms for Kids Safety Home Security Pool Safety Alzheimers Door Window Open Sensor Wireless Door Alarm with Remote
45 out of 5 Stars. 4 reviews
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Matter Thread USB Smart Door/Window Sensor,Home Security and Automatical, Burglar Alert, Works with Apple HomekitAlexa, Google Home,Home Assistant,App and Voice Control. $27.00
$2700
current price $27.00Matter Thread USB Smart Door/Window Sensor,Home Security and Automatical, Burglar Alert, Works with Apple HomekitAlexa, Google Home,Home Assistant,App and Voice Control.
20X Magnetic Sensor Home Door Window Entry Warning Alarm Switch $22.13
$2213
current price $22.1320X Magnetic Sensor Home Door Window Entry Warning Alarm Switch
23 out of 5 Stars. 2 reviews
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