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Safety Equipment and GearAir QualityAlarm SystemsAll Home SecurityAll Renewable EnergyAll Tool SetsBathroom HardwareBathroom PlumbingBetter Homes & Gardens Home ImprovementBreakers, Distributors, and Load CentersCar Emergency SuppliesCarbon Monoxide AlarmsCommercial LightingDesigner Plumbing Fixtures & HardwareDimmers, Switches, and Wall PlatesDoor HardwareDoor Security HardwareDoorbellsElectrical ToolsEmergency SuppliesFire SafetyFirst AlertFlashlightsFurniture HardwareGarage Door Openers and HardwareGarage LightsGarage Storage SystemsHand ToolsHome SafetyHome Safety by BrandHVAC Ducting and VentilationKeysKiddeLight BulbsMailboxes and Mailbox AccessoriesMechanics ToolsPaint Supplies & ToolsPersonal PreparednessPersonal SafetyPlumbing Tools & AccessoriesPower ToolsSafes & LockboxesSafety DetectorsSealants, Fillers and AdhesivesShop Plumbing by FixtureSolar AccessoriesSolar PanelsStorage ContainersStorm & Flood PrepSurveillanceTestersThermostatsTool Equipment & StorageUniversal Security InstrumentsWater FiltersWater Filtration & Water SoftenersWildfire PrepWoodworking Tools
Detector House(324)
Uses item details. Price when purchased online
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs From $21.24
Sponsored
From$2124
SITERWELL Smoke Detector, 10 Year Battery,Photoelectric Sensor, Fire Alarm,Low Battery,12 Packs
1984.4 out of 5 Stars. 198 reviews
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TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel $39.09 Was $45.99
Sponsored
Now$3909
current price Now $39.09, Was $45.99$45.99
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel
234.5 out of 5 Stars. 23 reviews
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Deal SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $22.32
Sponsored
From$2232
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
244.7 out of 5 Stars. 24 reviews
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Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch From $34.97
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From$3497
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
3804.1 out of 5 Stars. 380 reviews
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100+ bought since yesterday Kidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
3 options
Available in additional 3 optionsKidde Battery-Operated 4-inch Smoke Detector & Carbon Monoxide Value Pack, Batteries Included
7754.5 out of 5 Stars. 775 reviews
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Smoke Alarm Detector Home Fire Safety Sensor Alert
Smoke Alarm Detector Home Fire Safety Sensor Alert
434.1 out of 5 Stars. 43 reviews
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Bitiwend, 16ft Black Motion Household Sensors & Alarms
Bitiwend, 16ft Black Motion Household Sensors & Alarms
834.2 out of 5 Stars. 83 reviews
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Deal SITERWELL Smoke Detector, 10 Year Battery ,Photoelectric Sensor, Fire Alarm,Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 1 Packs From $21.24
8 options
Available in additional 8 optionsFrom$2124
SITERWELL Smoke Detector, 10 Year Battery ,Photoelectric Sensor, Fire Alarm,Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 1 Packs
1984.4 out of 5 Stars. 198 reviews
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Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector From $12.99
From$1299
Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector
314.3 out of 5 Stars. 31 reviews
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Clearance Door Window Alarm, 95DB Door Alarms for Kids Safety, Wireless Sensor Door Window Burglar Alarm-Window Pool Alarms for Home (3 Pack) Was $7.94
Door Window Alarm, 95DB Door Alarms for Kids Safety, Wireless Sensor Door Window Burglar Alarm-Window Pool Alarms for Home (3 Pack)
493.8 out of 5 Stars. 49 reviews
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included From $29.97
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From$2997
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included
1254.5 out of 5 Stars. 125 reviews
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Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch From $34.84
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From$3484
Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch
1623.8 out of 5 Stars. 162 reviews
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Bitiwend Motion Sensor Alarm, Wireless Home Security Driveway Alert, Black
Bitiwend Motion Sensor Alarm, Wireless Home Security Driveway Alert, Black
1053.6 out of 5 Stars. 105 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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Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch From $34.97
2 options
Available in additional 2 optionsFrom$3497
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch
3804.1 out of 5 Stars. 380 reviews
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Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage $22.88
$2288
current price $22.88Upgraded Smart WiFi Motion Sensor Detector Alarm Indoor with Siren, Phone App, USB Power, Alert Recording, Scheduled Working Times - Infrared Motion Sensor Alarm for Home Garage
Smoke Detector Home Security Sensor Alert Alarm From $13.39
From$1339
Smoke Detector Home Security Sensor Alert Alarm
84.1 out of 5 Stars. 8 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 $10.99
2 options
Available in additional 2 optionsFrom$1099
Door Window Alarm, Personal Security Window, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (4 Pcs) Home Alarm(Batteries not included)
2143.8 out of 5 Stars. 214 reviews
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Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts From $49.96
2 options
Available in additional 2 optionsFrom$4996
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Voice Alerts
3294.5 out of 5 Stars. 329 reviews
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Deal Topvico Water Leak Detectors for Home, Basements, Sump Pump, Under Sink, Moisture Alarm Sensor, 120dB Battery Operated Flood Alert, 3-Pack (95 Inch Cable) $12.71 Was $15.89
Now$1271
current price Now $12.71, Was $15.89$15.89
Topvico Water Leak Detectors for Home, Basements, Sump Pump, Under Sink, Moisture Alarm Sensor, 120dB Battery Operated Flood Alert, 3-Pack (95 Inch Cable)
15 out of 5 Stars. 1 reviews
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Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup From $35.97
Sponsored
From$3597
Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup
2333.7 out of 5 Stars. 233 reviews
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Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack From $65.00
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From$6500
Kidde 10-Year Sealed Lithium Battery-Operated Photoelectric Smoke Detector Alarm, 5-Inch, 2 Pack
1483.6 out of 5 Stars. 148 reviews
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Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector From $60.00
2 options
Available in additional 2 optionsFrom$6000
Kidde 10-Year Sealed Lithium Battery-Operated Combination Smoke & Carbon Monoxide Detector
4274.2 out of 5 Stars. 427 reviews
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PGST WiFi 4G Alarm System for Home Security, Wireless Home Alarm 10 Piece Kit with Siren, PIR Motion Sensors, Remote Controls, Window/Door Sensors Tuya and Smart Life APP Control
2 options
Available in additional 2 optionsPGST WiFi 4G Alarm System for Home Security, Wireless Home Alarm 10 Piece Kit with Siren, PIR Motion Sensors, Remote Controls, Window/Door Sensors Tuya and Smart Life APP Control
50+ bought since yesterday First Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT $16.99 $28.80/ea
$1699
current price $16.99$28.80/ea
First Alert SMI100 Battery-Operated Smoke Alarm, 1046827PT
1534.6 out of 5 Stars. 153 reviews
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Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery $27.97
$2797
current price $27.97Universal Security Instruments Inc Sensing Plus, Smoke and Fire Alarm, Multi-Criteria Detection, with 10 Year Sealed Battery
1644.6 out of 5 Stars. 164 reviews
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Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup From $35.97
2 options
Available in additional 2 optionsFrom$3597
Kidde Hardwired Photoelectric Smoke Detector Alarm, 10-Year Lithium Sealed Battery Backup
2333.7 out of 5 Stars. 233 reviews
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Portable Motion Sensor Alarm And Entrance Alert Chime With 90dB Siren Sound $14.50
$1450
current price $14.50Portable Motion Sensor Alarm And Entrance Alert Chime With 90dB Siren Sound
224.2 out of 5 Stars. 22 reviews
Deal Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black $26.99 Was $39.99
Now$2699
current price Now $26.99, Was $39.99$39.99
Driveway Alarm Wireless, Outdoor Motion Sensor Alarm with Motion Detector, Weatherproof Solar Driveway Alarm, 700 ft Range, 1 Receiver and 1 Sensor, Home Security System, Black
1384.3 out of 5 Stars. 138 reviews
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XIHAMA 25-80dB, 100 meters Motion Household Sensor & Alarm 5 Pieces $32.92
$3292
current price $32.92XIHAMA 25-80dB, 100 meters Motion Household Sensor & Alarm 5 Pieces
194.5 out of 5 Stars. 19 reviews
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SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm,Fire Alarm with Test/Silence Button,6 Packs From $26.21
Sponsored
From$2621
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm,Fire Alarm with Test/Silence Button,6 Packs
1374.4 out of 5 Stars. 137 reviews
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Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA $779.00
Sponsored
$77900
current price $779.00Room Alert 12S Proactive Environment Monitor – Built-in Temperature Sensor, Supports SSL/TLS, SNMP v3, App Alerts, Made in USA
Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack $84.99 Was $99.00
Now$8499
current price Now $84.99, Was $99.00$99.00
Ecobee EB-RSHM2PK-01 Decibel Rating 1 Maximum Range 1 Range White Household Sensors and Alarms Smart Sensor 2 Pieces 2 Pack
1924.4 out of 5 Stars. 192 reviews
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Deal SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $22.32
3 options
Available in additional 3 optionsFrom$2232
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
244.7 out of 5 Stars. 24 reviews
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SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack From $19.12
9 options
Available in additional 9 optionsFrom$1912
SITERWELL Smoke Detector, Magnetic Fastening Kit, Smoke Alarm, Photoelectric ,Low Battery Warning Function, 1 Pack
5584.4 out of 5 Stars. 558 reviews
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Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included From $49.97
2 options
Available in additional 2 optionsFrom$4997
Kidde Battery-Operated Combination Smoke & Carbon Monoxide Detector, Batteries Included
2164.6 out of 5 Stars. 216 reviews
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6-in-1 Safety Detector with Large LCD Display – Plug-in Alarm for Homes and RVs, Magnetic Battery Base, Temperature and Humidity Monitor (2Pcs Gray) From $69.99
From$6999
6-in-1 Safety Detector with Large LCD Display – Plug-in Alarm for Homes and RVs, Magnetic Battery Base, Temperature and Humidity Monitor (2Pcs Gray)
Rongsi Driveway Alarm,Wireless Home Security Driveway Alarm 1 Receiver and 1 PIR Motion Sensor Detector 1000 FT Range Extra Infrared Alarm System Kit $18.99
$1899
current price $18.99Rongsi Driveway Alarm,Wireless Home Security Driveway Alarm 1 Receiver and 1 PIR Motion Sensor Detector 1000 FT Range Extra Infrared Alarm System Kit
584.1 out of 5 Stars. 58 reviews
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Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch From $34.84
2 options
Available in additional 2 optionsFrom$3484
Kidde Hardwired Photoelectric Smoke Detector Alarm, AA Battery Backup, 5-inch
1623.8 out of 5 Stars. 162 reviews
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PGST WiFi+GSM/4G Home Smart Alarm Security System Kit,DIY Wireless Burglar Alert System,Motion Detector,Remote Control,Door Window Sensor,Smart Life Tuya APP Control,NO Monthly Fees (PG105-A)
5 options
Available in additional 5 optionsPGST WiFi+GSM/4G Home Smart Alarm Security System Kit,DIY Wireless Burglar Alert System,Motion Detector,Remote Control,Door Window Sensor,Smart Life Tuya APP Control,NO Monthly Fees (PG105-A)
143.8 out of 5 Stars. 14 reviews
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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X-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm, 3 Pack
2 options
Available in additional 2 optionsX-Sense Smoke Detector Carbon Monoxide Detector Combo 10 Year with Display, Standalone Model SC01 Smoke Alarm, 3 Pack
6314.5 out of 5 Stars. 631 reviews
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Deal SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack From $35.14
3 options
Available in additional 3 optionsFrom$3514
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack
64.3 out of 5 Stars. 6 reviews
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Wireless Alarm System for Home Security, WiFi 4G Door Alarms for Safety with Tuya and Smart Life APP Control (2.4GHz WiFi) For House, Apartment, Factory, Easy Instal, Work with Alexa and Google
Wireless Alarm System for Home Security, WiFi 4G Door Alarms for Safety with Tuya and Smart Life APP Control (2.4GHz WiFi) For House, Apartment, Factory, Easy Instal, Work with Alexa and Google
11 out of 5 Stars. 1 reviews
Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert, Store Door Entry Chime Doorbell with 1 PIR Motion Sensor Detectors and 1 Wireless Plug-in Receiver for Front Doors Window Frames $14.98
$1498
current price $14.98Wireless Home Security Driveway Alarm, Motion Sensor Detect Alert, Store Door Entry Chime Doorbell with 1 PIR Motion Sensor Detectors and 1 Wireless Plug-in Receiver for Front Doors Window Frames
74.3 out of 5 Stars. 7 reviews
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included From $29.97
2 options
Available in additional 2 optionsFrom$2997
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 5-inch, Batteries Included
1254.5 out of 5 Stars. 125 reviews
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YAHHU Dual Function Power Failure & Power On Detector Anti-Theft Alarm System, 175V-265V Corded Electric Household Security Sensor, White (4.33 inches / 11 cm) $15.51
$1551
current price $15.51YAHHU Dual Function Power Failure & Power On Detector Anti-Theft Alarm System, 175V-265V Corded Electric Household Security Sensor, White (4.33 inches / 11 cm)
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $19.81 Was $24.95
Now$1981
current price Now $19.81, Was $24.95$24.95
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup
684.7 out of 5 Stars. 68 reviews
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Hosmart HY001-1R+1S, 30ft Rechargeable Household Sensor & Alarm $42.99
$4299
current price $42.99Hosmart HY001-1R+1S, 30ft Rechargeable Household Sensor & Alarm
84.4 out of 5 Stars. 8 reviews
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First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796 $44.99
$4499
current price $44.99First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796
1544.4 out of 5 Stars. 154 reviews
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