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Household Sensors & Alarms - Page 3 - Blowout Sale! Save up to 88%


Blowout Sale! Up to 88% off on Household Sensors & Alarms at Defy Now, Page 3. Top brands include First Alert, Ecolink, Marine Technologies, Universal Security Instruments, UHPPOTE, Alert Plus, Sabre, Sungwoo, TTMOW, Feeko, Safety Technology Intl, Kidde, Sobrovo, Ardwolf, COOWOO, & Yosoo. Hurry! Limited time offers. Offers valid only while supplies last.



First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Battery Powered- Frust Free
First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Battery Powered- Frust Free
By First Alert
In Stock
$59.99
$23.09
You Save: 62%

mpn: SA320CN, ean: 0029054015358,

4.1 out of 5 stars with 103 reviews
The First Alert SA320CN Dual-Sensor Smoke and Fire Alarm is an advanced smoke detector that uses ionization and photoelectric sensors to provide early warning of both smoldering and flaming fires. It also features intelligent sensing technology to re...


Z-Wave Plus Motion Detector, Easy to Install with PET Immunity, White (PIRZWAVE2.5-ECO)
Z-Wave Plus Motion Detector, Easy to Install with PET Immunity, White (PIRZWAVE2.5-ECO)
By Ecolink
In Stock
$42.27
$39.99
You Save: 5%

mpn: PIRZWAVE2.5-ECO, ean: 0851166005114,

4.4 out of 5 stars with 126 reviews
From the leaders in Z-wave plus technology, the Ecolink Motion Detector allows you to improve the safety and security of your home and family easily and effectively. Built with premium components for better performance, these motion sensors provide i...


MTI Industries 65-542-P-WT Safe T Alert Carbon Monoxide Alarm - Flush Mount, White
MTI Industries 65-542-P-WT Safe T Alert Carbon Monoxide Alarm - Flush Mount, White
By Marine Technologies
In Stock
$66.91
$59.96
You Save: 10%

mpn: 0603.1086, ean: 0715456655420,

4.3 out of 5 stars with 116 reviews
The Safe T Alert Carbon Monoxide Alarm is designed for the rugged RV environment and is ideal for Class A motor homes, Class B van campers, Class C mini-motor homes, travel trailers, fifth wheels, trucks and folding campers. It features advanced tech...


First Alert RD1 Radon Gas Test Kit
First Alert RD1 Radon Gas Test Kit
By First Alert
In Stock
$13.98
$13.80
You Save: 1%

mpn: RD1, ean: 6292753210599,

4.0 out of 5 stars with 102 reviews
The First Alert RD1 Radon Gas Test Kit detects dangerous radon gas in your home, work, or institution. Radon is a naturally occurring gas that can cause lung cancer, and can be found in basements, drains, crawl spaces, and other areas below ground. S...


USI Electric MIC1509S Hardwired 3-in-1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm with 10-Year Sealed Battery Backup
USI Electric MIC1509S Hardwired 3-in-1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm with 10-Year Sealed Battery Backup
By Universal Security Instruments
In Stock
$37.85
$32.90
You Save: 13%

mpn: MIC1509S, ean: 0042741315098,

4.5 out of 5 stars with 56 reviews
The USI Electric MIC1509S Hardwired 3-in-1 Universal Smoke Sensing & Carbon Monoxide Combination Alarm provides continuous protection against three deadly threats within the home. Newly patented Universal Smoke Sensing Technology offers the benefits ...


UHPPOTE Wired 12-24VDC Sound and Light Fire Alarm Warning Strobe Siren Horn Sound Alert Safety System Sensor
UHPPOTE Wired 12-24VDC Sound and Light Fire Alarm Warning Strobe Siren Horn Sound Alert Safety System Sensor
By UHPPOTE
In Stock
$15.90

mpn: XF104, ean: 0616010529457,

4.7 out of 5 stars with 106 reviews
Purpose: The Sound-light Fire Alarm apparatus are one kind terminal device for alarm, it is fit for the sound & light alarm when the fire happens. Trait: Selects two or the four-wire system wiring method, the main line end receives two main lines, n...


Carbon Monoxide Alarm Detector,with Digital LCD Display and Voice Warning - Battery powered
Carbon Monoxide Alarm Detector,with Digital LCD Display and Voice Warning - Battery powered
By Alert Plus
In Stock
$24.00
$17.88
You Save: 26%

mpn: AP-6987, ean: 0680168899502,

4.1 out of 5 stars with 67 reviews
Sound Alarm Warning: When a dangerous level of carbon monoxide is detected the red LED will flash and the alarm pattern will sound 85-decibel alarm to protectCarbon Monoxide Alarm Warning When a dangerous level of carbon monoxide is detected the red ...


SABRE Wireless Home Security Door Window Burglar Alarm with LOUD 120 dB Siren - DIY EASY to Install
SABRE Wireless Home Security Door Window Burglar Alarm with LOUD 120 dB Siren - DIY EASY to Install
By Sabre
In Stock
$15.99
$13.12
You Save: 18%

mpn: HS-DWA2, ean: 0023063809465,

4.8 out of 5 stars with 11 reviews
A burglary occurs every 14.5 seconds in the U.S., and budget cuts have led to an average 911 response time of 10 minutes. Now available in a two-pack for a greater value, the attention-grabbing Door or Window Alarm is 120 dB alarm and audible up to ...


First Alert SCO500B Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location
First Alert SCO500B Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location
By First Alert
In Stock
$59.99
$40.89
You Save: 32%

mpn: SCO500B, ean: 0029054016324,

4.5 out of 5 stars with 149 reviews
The First Alert SCO500B Wireless Interconnected Photoelectric Smoke and Carbon Monoxide Combo Alarm with Voice and Location detects smoke and elevated carbon monoxide levels and can work with compatible models to create a wireless alert system throug...


Gas Leak Detector, Sungwoo Combustible Gas Detector, Natural Propane Methane Gas Leak Detector Sniffer with Audible & Visual Alarm Sensor Monitor for Home & Chemical Plant Safety (RED)
Gas Leak Detector, Sungwoo Combustible Gas Detector, Natural Propane Methane Gas Leak Detector Sniffer with Audible & Visual Alarm Sensor Monitor for Home & Chemical Plant Safety (RED)
By Sungwoo
In Stock
$27.99

ean: 0716253451727,

4.0 out of 5 stars with 33 reviews
Gas Leak Detector,Sungwoo Combustible Gas Detector Natural Gas Detector Propane Leak Detector with Audible and Visual Alarm Leak Detector for Home Safety Sungwoo type 8800A leak detector with visual leakage indicator can detect leakage, it can be use...


First Alert SCO501CN-3ST Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Location
First Alert SCO501CN-3ST Battery Operated Combination Smoke and Carbon Monoxide Alarm with Voice Location
By First Alert
In Stock
$51.29

mpn: SCO500, ean: 6942469330639,

4.6 out of 5 stars with 126 reviews
The First Alert SCO501CN-3ST Combination Smoke and Carbon Monoxide Alarm with Voice Location detects both smoke and carbon monoxide in a single device. Designed for those who want a comprehensive detection system without hiring an electrician, this b...


TTMOW Natural Gas Alarm Combustible Gas Leak Detector High Sensitivity with Sound Warning for Your Home Safety,Prevent Fire Explosion Device
TTMOW Natural Gas Alarm Combustible Gas Leak Detector High Sensitivity with Sound Warning for Your Home Safety,Prevent Fire Explosion Device
By TTMOW
In Stock
$87.99
$27.99
You Save: 68%

ean: 0712243066360,

4.0 out of 5 stars with 54 reviews
TTMOW Natural Gas Alarm Combustible Gas Leak Detector High Sensitivity with Sound Warning for Your Home Safety,Prevent Fire Explosion Device★Prevent Fire,Protect Your Family safety - All the time detect the flammable gases, accuracy and timely warn...


Wireless HoDoor Window Burglar Safety Security Alarm System Magnetic Sensor Pack 10
Wireless HoDoor Window Burglar Safety Security Alarm System Magnetic Sensor Pack 10
By Feeko
In Stock
$12.99

mpn: 702455998856, ean: 0702455998856,

4.2 out of 5 stars with 53 reviews
Features:  New and high quality  Super loud 90 dB alarm Convenience in installation--just peel and stick  Super environmental suitability and stability  Dustproof and insect prevention  Easily mounted by adhesive.  Type to window or door.  Ide...


Safety Technology International, Inc. STI-6402 105 dB Exit Stopper Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery
Safety Technology International, Inc. STI-6402 105 dB Exit Stopper Multifunction Door Alarm for Double Doors with on/off Switch and 9 Volt Battery
By Safety Technology Intl
SKU: #VEN12-SF-6402
In Stock
$99.99
$86.97
You Save: 13%

sku: VEN12-SF-6402, mpn: 6402, ean: 0662950640202,

4.7 out of 5 stars with 86 reviews
Safety Technology International, Inc. STI-6402 Exit Stopper Multifunction Door Alarm for Double Doors - Highly effective, alarm alerts to any unauthorized exits/entries through emergency exit doors and rear doors. Serves as an inexpensive security de...


Kidde 21006406 KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable
Kidde 21006406 KN-COB-IC Hardwire Carbon Monoxide Alarm with Battery Backup, Interconnectable
By Kidde
In Stock
$59.99
$28.98
You Save: 52%

mpn: 21006406, ean: 0047871001200,

4.6 out of 5 stars with 33 reviews
Safety Products/Fire, Gas & Water Protection. Made in: United States. Dimensions: 2.4 X 6 X 5.9. ...


Smoke Alarms, Photoelectric Smoke Detector and Fire Alarm with Light Sound Warning 9V Battery (Included) Powered Fire Safety for Home Hotel School etc Passed UL Certification
Smoke Alarms, Photoelectric Smoke Detector and Fire Alarm with Light Sound Warning 9V Battery (Included) Powered Fire Safety for Home Hotel School etc Passed UL Certification
By Sobrovo
In Stock
$99.99
$11.99
You Save: 88%

mpn: Sobrovo, ean: 0761330002576,

4.1 out of 5 stars with 43 reviews
Feature: ★ This unit is a photoelectric smoke alarm. The photoelectric technology ,it is more sensitive in detecting slow  smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames. ★ This s...


Smoke Detector, Ardwolf 2 Pack Photoelectric Smoke Fire Alarm UL Listed GS528A Battery-Powered (9V Battery Included),10 Years Life Time, Save Lives When Fire Happen at Home, Hotel, School
Smoke Detector, Ardwolf 2 Pack Photoelectric Smoke Fire Alarm UL Listed GS528A Battery-Powered (9V Battery Included),10 Years Life Time, Save Lives When Fire Happen at Home, Hotel, School
By Ardwolf
In Stock
$21.99

mpn: GS528A2pack, ean: 6761342270394,

4.1 out of 5 stars with 129 reviews
Photoelectric Technology: Ardwolf smoke alarms with photoelectric technology which is optimized to detect slow smoldering fires which generate light smoke, little heat and may smolder for hours before bursting into flames.. Battery-Powered: This Fire...


2 Pack Photoelectric Smoke Detector & Alarm, Battery-Operated(Not Hardwired) Smoke and Fire Alarm/Detector with Test Button, Photoelectric Fire Dector/Alarm with UL Listed(9V Battery Included)
2 Pack Photoelectric Smoke Detector & Alarm, Battery-Operated(Not Hardwired) Smoke and Fire Alarm/Detector with Test Button, Photoelectric Fire Dector/Alarm with UL Listed(9V Battery Included)
By COOWOO
In Stock
$49.99
$21.99
You Save: 56%

mpn: YG-02,

4.5 out of 5 stars with 98 reviews
Complete Home ProtectionWorking smoke alarms cut the risk of dying in a home fire by 50%, and that's important because a home fire starts every 83 seconds! The faster you know about a fire, the faster you can start moving your family outside. The CO...


Yosoo Gas Leakage Detector Family Safety Alarm for US Plug
Yosoo Gas Leakage Detector Family Safety Alarm for US Plug
By Yosoo
In Stock
$22.59
$22.36
You Save: 1%

mpn: Yosoo, ean: 0736691323691,

4.4 out of 5 stars with 100 reviews
Features:--It is suitable for detecting LPG, natural gas, and coal gas at home kitchen, hotel or restaurant, etc. --Designed with MCU intelligent supervise control and SMT chip technology. --The LED numeric display technology can display instant gas ...



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