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Household Sensors & Alarms - Blowout Sale! Save up to 57%
Blowout Sale! Up to 57% off on Household Sensors & Alarms at Defy Now. Top brands include MSA (Mine Safety Appliances Co), Kidde, First Alert, 3M, Simplex, Alert Pro, MTI, vodool, & Baldwin Meadows. Hurry! Limited time offers. Offers valid only while supplies last.
MSA (Mine Safety Appliances) 10107602 Altair 4X Portable Combustible Gas, Oxygen, Hydrogen Sulfide and Carbon Monoxide Monitor with Motion Alert
By MSA (Mine Safety Appliances Co)
In Stock
$669.00
mpn: 10107602, ean: 0816687000000,
4.0 out of 5 stars with 113 reviews
Fend all Flash Flood utilizes sealed cartridges that contain one gallon of preserved and pH balanced Spherion Saline solution. The Fend all Flash Flood delivery system offers immediate, hands-free eye flushing, and is portable to meet the needs of ch...
Kidde AC Hardwired Interconnect Smoke Alarm with Hush I12040
$13.73
By Kidde
In Stock
$10.30
You Save: 25%
mpn: i12040, ean: 0047871260492,
4.4 out of 5 stars with 54 reviews
Hush feature temporarily silences nuisance alarms. One touch test button tests unit's electronic circuitry. 9V Battery Backup (included).. Tamper resist locking pin helps deter alarm tampering and theft. Kidde smoke alarms meet the UL requirements. ...
Kidde i12060 Hardwired Smoke Alarm with Front Load Battery Backup Smoke Alarm
By Kidde
In Stock
$12.77
mpn: 21026054, ean: 0047871260546,
4.4 out of 5 stars with 121 reviews
Front load battery door provides easy access which reduces the installation time and battery replacement time. Battery pull tab prevents draining battery until permanent AC power is connected. Hush feature temporarily silences nuisance alarms. One to...
First Alert SA305CN Smoke Alarm with Long Life Lithium Battery
$28.99
By First Alert
In Stock
$12.79
You Save: 56%
mpn: FBA_SA305CN3, ean: 0111012200002,
4.5 out of 5 stars with 80 reviews
Lithium battery smoke alarm with silence button. Features convenient silence/test button, blinking power light, 85-decibel alarm. Also includes side battery drawer and missing battery guard. Low battery warning and tamper resistant. 9-volt lithium ba...
Kidde i12010S Hardwired Smoke Alarm
$33.00
By Kidde
In Stock
$25.83
You Save: 22%
mpn: 21010408, ean: 0047871265145,
4.9 out of 5 stars with 106 reviews
The Kidde i12010S is an AC/DC powered, ionization smoke alarm that operates on a 120V power source with sealed-in lithium battery backup. This alarm uses ionization sensing technology. Ionization sensing alarms may detect invisible fire particles(ass...
3M LeadCheck Swabs, 8-Pack
$22.85
By 3M
In Stock
$21.00
You Save: 8%
mpn: 717834209102DUPE, ean: 0717834205135,
4.9 out of 5 stars with 25 reviews
3M(TM) LeadCheck(TM) Swabs are EPA recognized, non-toxic and provide a rapid, test for lead on most surfaces. When lead is detected, 3M(TM) LeadCheck(TM) Swabs turn red on contact. The vast majority of test situations results are obtained in less tha...
Kidde RF-SM-DC Wireless Interconnect Battery-Operated Smoke Alarm
$38.18
By Kidde
In Stock
$27.78
You Save: 27%
mpn: RF-SM-DC, ean: 0047871260447,
4.4 out of 5 stars with 117 reviews
Wireless technology uses radio frequency to transmit and receive messages. Battery power enables homeowners to install interconnected alarms without rewiring. Smart touch button quickly and temporarily silences nuisance alarms. Wireless alarm can be...
Kidde i12040 120V AC Wire-In Smoke Alarm with Battery Backup and Smart Hush
$22.99
By Kidde
In Stock
$10.00
You Save: 57%
mpn: 21006378, ean: 7147905930940,
4.7 out of 5 stars with 119 reviews
Easy Installation - Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness w...
Firex Hardwired Smoke Alarm I4618
By Kidde
In Stock
$25.00
mpn: 21026063, ean: 0716080045281,
4.2 out of 5 stars with 54 reviews
Easy Installation - Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness wit...
First Alert BRK 7010B Hardwire Smoke Alarm with Photoelectric Sensor and Battery Backup
$19.48
By First Alert
In Stock
$19.40
mpn: GID-601061, ean: 0746211141193,
4.6 out of 5 stars with 106 reviews
120-volt hardwired smoke alarm wires directly into your home's electrical system. Photoelectric sensor detects smoke from smoldering fires while minimizing false alarms. Universal mounting bracket and plug-in power connector for hassle-free installa...
SIMPLEX 4098-9714 AUTOMATIC FIRE SMOKE DETECTOR SAFETY AND SECURITY B475304
By Simplex
In Stock
$45.50
mpn: B475304-4098-9714, ean: 0056674517009,
4.0 out of 5 stars with 8 reviews
Smoke Detector Head, For use with a Simplex UL Listed Base, Also Suitable for Special Application...
Worry-Free Combination Smoke & Carbon Monoxide Alarm with Lithium Battery P3010CU
$80.42
By Kidde
In Stock
$39.84
You Save: 50%
mpn: 21026065, ean: 0047871260652,
4.6 out of 5 stars with 77 reviews
The Kidde P3010CU is a 10-year, sealed battery, smoke and carbon monoxide alarm with a voice warning system that features photoelectric and electrochemical sensing technology with Smart Hush feature. This combination alarm combines the detection capa...
10 Year Battery Smoke Detector Fire Alarm with Photoelectric Sensor
By Alert Pro
In Stock
$16.48
mpn: AP-989, ean: 0750408332707,
4.1 out of 5 stars with 18 reviews
10-YEAR BATTERY SMOKE DETECTOR ALARM : A sealed CR123A lithium battery boasts high capacity, great stability, and a long lifespan up to 10 years, avoiding the hassle of frequently changing battery SUPERIOR ALARM PERFORMANCE: Proven performance for de...
First Alert SA511CN2-3ST Interconnected Wireless Smoke Alarm with Voice Location, Battery Operated, Pack of Two
$72.89
By First Alert
In Stock
$57.47
You Save: 21%
mpn: SA511CN2-3ST, ean: 0783961354817,
4.6 out of 5 stars with 10 reviews
The First Alert SA511CN2-3ST Interconnected Wireless Smoke Alarm with Voice Location features an 85-decibel siren and voice alarm that tells you where the danger is located. A photoelectric sensor detects smoke while minimizing false alarms from cook...
Kidde i4618 Firex Hardwire Ionization Smoke Detector with Battery Backup (6 Pack)
$55.44
By Kidde
In Stock
$52.83
You Save: 5%
mpn: i4618-6,
4.3 out of 5 stars with 69 reviews
The Firex i4618 Hardwire Smoke Alarm by Kidde is an ionization smoke alarm that operates on a 120V power source with 9V battery backup. The Firex i4618 smoke alarm offers many benefits for installers and homeowners, such as its easy-access slide load...
MTI Industries 30-442-P-WT Propane Gas Alarm – White
$53.42
By MTI
In Stock
$50.50
You Save: 5%
mpn: 0603.1089, ean: 0715456404301,
4.3 out of 5 stars with 33 reviews
The Safe T Alert 30 Series Propane/LP Gas 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 adva...
2 Pack Smoke Detector, Photoelectric Sensor Fire and Smoke Alarm with 9V Battery Operated, Silence Test Button, Light Sound Warning, UL Listed, 10 Years Life Time
$39.99
By vodool
In Stock
$21.99
You Save: 45%
4.5 out of 5 stars with 43 reviews
"Thousands of people die each year as a result of either house fires or wildfires, with direct property loss estimated at $8.6 billion annually!" HOW SHOCKING THE TRUTH IS! Home fire starts every 83 seconds!That's why we need a smoke alarm?sensor ...
First Alert CO910 10-Year Carbon Monoxide Alarm, White
$39.99
By First Alert
In Stock
$24.98
You Save: 38%
mpn: CO910, ean: 0029054012241,
4.4 out of 5 stars with 143 reviews
The First Alert CO910 Carbon Monoxide Alarm with 10-Year Battery is designed to provide you with a decade of uninterrupted carbon monoxide monitoring. This carbon monoxide detector uses an electrochemical carbon monoxide sensor, the most accurate CO ...
Drinking Water Test Kit 9 in 1 - Best Water Quality Test for Well Water and Tap Water - Determines pH - Lead - Total Hardness - Copper - Alkalinity & More - 100 Ct - Accurate Results in Seconds!
By Baldwin Meadows
In Stock
$19.99
mpn: 9 Parameter, ean: 0866555000403,
4.3 out of 5 stars with 109 reviews
Baldwin Meadows has developed a way to test the water with an easy to use at-home water analysis test kit. Our 9-in-1 water testing strips help determine the quality of your water using the following parameters: Total Alkalinity pH Total Hardness ...
Smoke Detector, Photoelectric Sensor Smoke Alarm, 10 Years Safety Hardwired Fire Alarm with 9V Back up Battery, Red Flash Alarm and Green AC Power Indicator, Interconnect up to 12pcs
$39.99
By vodool
In Stock
$21.99
You Save: 45%
4.6 out of 5 stars with 127 reviews
"Thousands of people die each year as a result of either house fires or wildfires, with direct property loss estimated at $8.6 billion annually!" HOW SHOCKING THE TRUTH IS! Home fire starts every 83 seconds!That's why we need a smoke alarm?sensor ...
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