System Sensor Smoke Detector(104)
Uses item details. Price when purchased online
Best seller X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 5-Pack From $42.99
Sponsored
From$4299
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 5-Pack
3524.6 out of 5 Stars. 352 reviews
Save with
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06 From $42.99
Sponsored
From$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06
6194.6 out of 5 Stars. 619 reviews
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC01 From $42.99
Sponsored
From$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC01
534.5 out of 5 Stars. 53 reviews
Save with
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack From $35.14
Sponsored
From$3514
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 pack
64.3 out of 5 Stars. 6 reviews
Save with
2 pack Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector From $12.99
From$1299
2 pack Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector
354.3 out of 5 Stars. 35 reviews
Save with
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
1664.6 out of 5 Stars. 166 reviews
Save with
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $24.80
3 options
Available in additional 3 optionsFrom$2480
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
274.7 out of 5 Stars. 27 reviews
Save with
SITERWELL Smoke Detector, Smoke Detector 10 Year Battery with Photoelectric Sensor, Fire Alarm with Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 10 Packs From $25.12
8 options
Available in additional 8 optionsFrom$2512
SITERWELL Smoke Detector, Smoke Detector 10 Year Battery with Photoelectric Sensor, Fire Alarm with Low Battery and Fault Warning for House and Bedroom, UL217-9th Listed, GS525A, 10 Packs
2024.4 out of 5 Stars. 202 reviews
2 Pack Smoke Detector Home Security Sensor Alert Alarm
2 Pack Smoke Detector Home Security Sensor Alert Alarm
114.1 out of 5 Stars. 11 reviews
Save with
100+ bought since yesterday Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included From $19.88
2 options
Available in additional 2 optionsFrom$1988
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-Inch, Batteries Included
8204.5 out of 5 Stars. 820 reviews
Save with
SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,1 Pack From $54.99
Sponsored
From$5499
SITERWELL Hardwired Interconnected Smoke and Carbon Monoxide Detector, 10 Year Product Life Alarm Smoke Carbon Monoxide Detector with 2 AA Batteries Back Up, Smoke and CO Detector Voice Alert,1 Pack
244.1 out of 5 Stars. 24 reviews
Save with
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $42.99
Sponsored
From$4299
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1824.7 out of 5 Stars. 182 reviews
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup From $34.94
2 options
Available in additional 2 optionsFrom$3494
(2 pack) Universal Security Instruments, Sensing Plus, Hardwired Smoke & Fire Alarm, Multi-Criteria Detection, with 10 Year Battery Backup
1244.2 out of 5 Stars. 124 reviews
Save with
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup $19.49 Was $24.95
Now$1949
current price Now $19.49, 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
First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization $49.51
$4951
current price $49.51First Alert SMICO100-AC Interconnect Hardwire 2-in-1 Smoke and CO Alarm with Battery Backup, Ionization
1274.2 out of 5 Stars. 127 reviews
Save with
SITERWELL Smoke Detector,Fire Alarm,Magnetic Fastening Kit, Smoke Alarm,Photoelectric Sensor ,Low Battery Warning Function for House, 2Packs From $19.52
9 options
Available in additional 9 optionsFrom$1952
SITERWELL Smoke Detector,Fire Alarm,Magnetic Fastening Kit, Smoke Alarm,Photoelectric Sensor ,Low Battery Warning Function for House, 2Packs
5684.4 out of 5 Stars. 568 reviews
Save with
3PCS Smoke Alarm Detector, Fire Protection Home Security System Smoke Alarm From $13.39
From$1339
3PCS Smoke Alarm Detector, Fire Protection Home Security System Smoke Alarm
54.2 out of 5 Stars. 5 reviews
Save with
Universal Security Instruments, Sensing Plus, Hardwired, Combo Smoke, Fire & Carbon Monoxide Alarm, with 10-Year Battery Backup From $59.00
2 options
Available in additional 2 optionsFrom$5900
Universal Security Instruments, Sensing Plus, Hardwired, Combo Smoke, Fire & Carbon Monoxide Alarm, with 10-Year Battery Backup
934.3 out of 5 Stars. 93 reviews
Save with
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
2363.7 out of 5 Stars. 236 reviews
Save with
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack From $24.80
Sponsored
From$2480
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Fire Alarm,Bilingual Voice Alerts, UL217-9th Standards,1 Pack
274.7 out of 5 Stars. 27 reviews
Save with
Universal Security Instruments, Sensing Plus, Hardwired, Combo Smoke, Fire & Carbon Monoxide Alarm, with 10-Year Battery Backup From $59.00
Sponsored
From$5900
Universal Security Instruments, Sensing Plus, Hardwired, Combo Smoke, Fire & Carbon Monoxide Alarm, with 10-Year Battery Backup
934.3 out of 5 Stars. 93 reviews
Save with
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm,9V Backup Battery, Fire Alarm,Test/Silence Button, ETL-9th Listed, 12 Packs From $26.21
9 options
Available in additional 9 optionsFrom$2621
SITERWELL Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm,9V Backup Battery, Fire Alarm,Test/Silence Button, ETL-9th Listed, 12 Packs
1414.4 out of 5 Stars. 141 reviews
Save with
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Sensor with Digital Display, Standalone Alarm, Certified to Latest UL Standards, SC01, 1-PACK
534.5 out of 5 Stars. 53 reviews
Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack $25.49
$2549
current price $25.49Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack
124.8 out of 5 Stars. 12 reviews
Save with
First Alert 1039852, Battery Photoelectric Sensor Smoke Alarm $29.99
$2999
current price $29.99First Alert 1039852, Battery Photoelectric Sensor Smoke Alarm
834.3 out of 5 Stars. 83 reviews
50+ bought since yesterday Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack From $36.88
2 options
Available in additional 2 optionsFrom$3688
Kidde Battery-Operated Photoelectric Smoke Detector Alarm, 4-inch, Batteries Included, 2 Pack
2864.5 out of 5 Stars. 286 reviews
Save with
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
3824.1 out of 5 Stars. 382 reviews
Save with
First Alert SMCO100 Battery-Operated 2-in-1 Smoke and CO Alarm $35.99
$3599
current price $35.99First Alert SMCO100 Battery-Operated 2-in-1 Smoke and CO Alarm
44 out of 5 Stars. 4 reviews
Save with
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack $49.97
$4997
current price $49.97First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
584.6 out of 5 Stars. 58 reviews
Save with
Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack $25.49
Sponsored
$2549
current price $25.49Rely Essentials 5500 Smoke Detector - 10 Year Sealed Battery - Photoelectric Sensor Smoke Detector - Compact 4-Inch Design- Home Fire Protection - Easy Installation - 1 Pack
124.8 out of 5 Stars. 12 reviews
Save with
SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor and Low Battery Warning Function for House, ETL-9th Listed, GS509A, 5 Pack From $19.52
Sponsored
From$1952
SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor and Low Battery Warning Function for House, ETL-9th Listed, GS509A, 5 Pack
5684.4 out of 5 Stars. 568 reviews
Save with
First Alert SC5 Hardwire Smart 2-in-1 Smoke and CO Alarm with Voice Alerts and Battery Backup $129.00
$12900
current price $129.00First Alert SC5 Hardwire Smart 2-in-1 Smoke and CO Alarm with Voice Alerts and Battery Backup
84.4 out of 5 Stars. 8 reviews
Save with
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Combination Smoke and Carbon Monoxide Alarm, 10-Year Battery Powered Detector, UL Certified, 1 PACK, XP0H-SN
1824.7 out of 5 Stars. 182 reviews
Rely 7600 Hardwired Smoke Detector with Battery Backup, Interconnected AC Powered Alarm, Photoelectric Sensor, RealAlerts Voice & LED Warning System, 1-Pack $52.99
$5299
current price $52.99Rely 7600 Hardwired Smoke Detector with Battery Backup, Interconnected AC Powered Alarm, Photoelectric Sensor, RealAlerts Voice & LED Warning System, 1-Pack
55 out of 5 Stars. 5 reviews
Save with
Rely Essentials 4500 Smoke Alarm - Battery Operated Photoelectric Sensor Smoke Detector - Compact 4-Inch Design - Home Fire Protection - Easy Installation - 1 Pack $25.49
$2549
current price $25.49Rely Essentials 4500 Smoke Alarm - Battery Operated Photoelectric Sensor Smoke Detector - Compact 4-Inch Design - Home Fire Protection - Easy Installation - 1 Pack
124.6 out of 5 Stars. 12 reviews
Save with
Universal Security Instruments Hardwire Smoke & Fire Alarm, with Battery Back-up $27.97
$2797
current price $27.97Universal Security Instruments Hardwire Smoke & Fire Alarm, with Battery Back-up
25 out of 5 Stars. 2 reviews
Save with
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack
First Alert BRK SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack
204.4 out of 5 Stars. 20 reviews
Save with
Best seller X-Sense Wireless Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery Alarm With Display, Over 820 ft Transmission Range, SC07-W, 6-Pack From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Wireless Smoke Detector Carbon Monoxide Detector Combo 10 Year Battery Alarm With Display, Over 820 ft Transmission Range, SC07-W, 6-Pack
3524.6 out of 5 Stars. 352 reviews
Save with
First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796 $43.90
$4390
current price $43.90First Alert SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm with Slim Profile, 1046796
1534.4 out of 5 Stars. 153 reviews
Save with
First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector $34.90
$3490
current price $34.90First Alert Voice Alert Hard-Wired Photoelectric Smoke Detector
234.5 out of 5 Stars. 23 reviews
Save with
Kidde 10-Year Battery Smoke Detector, Voice Alerts & LED Warning Lights $46.74
$4674
current price $46.74Kidde 10-Year Battery Smoke Detector, Voice Alerts & LED Warning Lights
164.4 out of 5 Stars. 16 reviews
Save with
Universal Security Instruments Hardwire Smoke & Fire Alarm, with 10-Year Battery Backup $44.97
$4497
current price $44.97Universal Security Instruments Hardwire Smoke & Fire Alarm, with 10-Year Battery Backup
Save with
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.3 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.3 pack
64.3 out of 5 Stars. 6 reviews
Save with
20 Pack Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector From $124.99
From$12499
20 Pack Smoke Alarm Home Security System Fire Protection Smoke Alarm Detector
Save with
BRK fg250b, Battery Dual Ionization Sensor Smoke Alarm $36.99
$3699
current price $36.99BRK fg250b, Battery Dual Ionization Sensor Smoke Alarm
104.6 out of 5 Stars. 10 reviews
Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack $69.99
$6999
current price $69.99Rely 7400 2-in-1 Smoke & Carbon Monoxide Detector Hardwired AC Powered with Battery Backup - RealAlerts Voice & LED Warning System - Photoelectric Smoke and CO Detector - Interconnect - 1 Pack
105 out of 5 Stars. 10 reviews
Save with
USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels $99.99
$9999
current price $99.99USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels
474.3 out of 5 Stars. 47 reviews
Save with
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06 From $42.99
2 options
Available in additional 2 optionsFrom$4299
X-Sense Smoke and Carbon Monoxide Detector Combo, 10-Year Battery, Standalone Alarm, Certified to Latest UL Standards, 5 PACK, SC06
6194.6 out of 5 Stars. 619 reviews
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
1643.8 out of 5 Stars. 164 reviews
Save with
Popular in System Sensor Smoke Detector
Related Products
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack
SITERWELL Hardwired Smoke & Carbon Monoxide Detector Combo,10 Year Battery,UL217-9th,Interconnected,Bilingual Voice Alerts,6.1in*1.65in.1 pack$35.14current price $35.14SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Bilingual Voice Alerts for Bedroom, UL217-9th , 2 Packs
SITERWELL Smoke Detector 10 Year Battery Operated,Photoelectric,Rlectrochemical Sensors, Bilingual Voice Alerts for Bedroom, UL217-9th , 2 Packs$47.99current price $47.99First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK
First Alert Hardwired Smoke Alarm with Battery Backup 6 PACK$122.43current price $122.43Electronic Alarm, Alarm, Continuous, 12 to 24V AC/DC, 0 to 105dB, ABS Plastic, Black, Surface Mount
Electronic Alarm, Alarm, Continuous, 12 to 24V AC/DC, 0 to 105dB, ABS Plastic, Black, Surface Mount$229.89current price $229.89First Alert PRC710, White Battery, Photoelectric Carbon Monoxide & Smoke Combination Alarm
First Alert PRC710, White Battery, Photoelectric Carbon Monoxide & Smoke Combination Alarm$54.99current price $54.99Fire Alarm Being Activated Poster Print - 18 x 24 in.
Fire Alarm Being Activated Poster Print - 18 x 24 in.$40.25current price $40.25TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel
TOPTES Carbon Monoxide Detector CT-300, Handheld CO Alarm with Backlit LCD Display and Audible Visual Alerts, for Home, Car, Camping and Travel$41.39current price $41.39Buzzer, Buzzer, Pulse, 115 to 230V AC, 80 dB, Fiberglass, Black, Wall Mount 10701060
Buzzer, Buzzer, Pulse, 115 to 230V AC, 80 dB, Fiberglass, Black, Wall Mount 10701060$80.03current price $80.03First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack$49.97current price $49.97First Alert SC9120B Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up 2 Pack
First Alert SC9120B Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up 2 Pack$159.99current price $159.99Fire Extinguisher Alarm,12V,Polycrbonate STI-6200R
Fire Extinguisher Alarm,12V,Polycrbonate STI-6200R$55.59current price $55.59TONAIN 90 dB, White Magnetic Household Sensors & Alarms
TONAIN 90 dB, White Magnetic Household Sensors & Alarms$4.48current price $4.48Amerex 5 lb ABC Extinguisher w/ Aluminum Valve & Wall Hanger (4 Units)
Amerex 5 lb ABC Extinguisher w/ Aluminum Valve & Wall Hanger (4 Units)