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Household Sensors & Alarms - Blowout Sale! Save up to 57%


Blowout Sale! Up to 57% off on Household Sensors & Alarms at N Online Agency. Top brands include Tektree, First Alert, KERUI, Lorest, Kidde, JCHENG SECURITY, MESMART, Gentex, Signstek, Universal Security Instruments, Wally, CAIG Laboratories, Ardwolf, GE, Apollo, & Gufastore. Hurry! Limited time offers. Offers valid only while supplies last.



Combustible Gas Detector Portable Natural Gas Leak Detector Tester with Sound Light Alarm Gas Sniffer — Tektree
Combustible Gas Detector Portable Natural Gas Leak Detector Tester with Sound Light Alarm Gas Sniffer — Tektree
By Tektree
In Stock
$24.99

mpn: BNUS80021G, ean: 0602914361743,

4.5 out of 5 stars with 89 reviews
Application The 8800A series are general purpose combustible gas detectors which may be used in almost any situation where a combustible gas, vapor or residueneeds to be found. Specifications Batteries: 3x AAA battery (NOT INCLUDED) Weight: 175g Si...


First Alert FCD4CN-3 Battery Powered Carbon Monoxide Alarm
First Alert FCD4CN-3 Battery Powered Carbon Monoxide Alarm
By First Alert
In Stock
$20.99

mpn: FCD4, ean: 0029054155016,

4.6 out of 5 stars with 138 reviews
Maximum Protection plus Ultimate Convenience Carbon Monoxide Alarm FCD4 Plug-in with battery backup. Works during power outages. Remote control Silence/ Test. Uses most household remote control devices to silence or test alarm. Digital Display. Store...


KERUI GD13 Home Universal Security Instruments liquefied petroleum gas natural gas methane Combustible Gas Detector Alarm Sensor System with Voice Warning prompt
KERUI GD13 Home Universal Security Instruments liquefied petroleum gas natural gas methane Combustible Gas Detector Alarm Sensor System with Voice Warning prompt
By KERUI
In Stock
$29.99

mpn: 0302KRGD13, ean: 0701473044316,

4.8 out of 5 stars with 10 reviews
This Gas Detector can work with the alarm system in our KERUI alarm but we can not make sure whether it can work with other alarm on Amazon, if you want to order this item to work with other system,please send some pictures or web link of the system ...


Symbion Portable Propane Natural Gas Leak Detector
Symbion Portable Propane Natural Gas Leak Detector
By Lorest
In Stock
$20.35

mpn: 240PGD, ean: 0815641010086,

4.9 out of 5 stars with 134 reviews
Detect potentially dangerous acetylene, butane, methane (natural gas), and propane leaks with this lightweight, pocket-sized, portable gas detector. When harmful gases are detected at levels greater than 5% Lower Explosive Limit (LEL), this detector ...


Kidde KA-F - Quick Convert Adapter - Allows Installation of Kidde Alarm in Firex
Kidde KA-F - Quick Convert Adapter - Allows Installation of Kidde Alarm in Firex
By Kidde
In Stock
$37.99

mpn: 1, ean: 5448095872563,

4.1 out of 5 stars with 121 reviews
The quick convert adapter allows the installation of a new Kidde alarm to an existing competitive wiring harness. This allows for easy installation when replacing the specified smoke alarm brands with a Kidde product. The smoke alarm adapter also all...


JC Wireless 433MHz Water Sensor, Flood Leakage Senor Indoor Easy Use
By JCHENG SECURITY
In Stock
$19.99

ean: 0606462991179,

4.0 out of 5 stars with 124 reviews
Features: It adopted the detected theory of water leakage, once it detects any water, it will automatically send wireless signal to the control center (alarm host). It needs to work with alarm host, can't work alone. It protects in 24 hours to prev...


MESMARTGas Leak Sensor (Standard) Flammable Combustible Gas Leak Sensor Detector Leakage Detection Abnormal Voice Alarm Safety Warning Wireless Smart Home Security System
MESMARTGas Leak Sensor (Standard) Flammable Combustible Gas Leak Sensor Detector Leakage Detection Abnormal Voice Alarm Safety Warning Wireless Smart Home Security System
By MESMART
In Stock
$59.99
$39.99
You Save: 33%

mpn: 5, ean: 0747100530081,

4.1 out of 5 stars with 106 reviews
Features: Works as a normal gas leak detector if without our Mesmart smart home hub Voice warning will automatically begin with loud "Beeps" if detects the gas leaking Normal alarm function will only remind people while they are in home or in the le...


Gentex GXS-120177WR Fire Evacuation, 120VAC Remote Evacuation Strobe - Red Faceplate
Gentex GXS-120177WR Fire Evacuation, 120VAC Remote Evacuation Strobe - Red Faceplate
By Gentex
In Stock
$65.65
$48.79
You Save: 26%

mpn: GXS-120177WR, ean: 0700217011584,

4.3 out of 5 stars with 81 reviews
The Gentex GXS-120177WR is a red, wall-mount fixed-candela 120VAC remote strobe....


Signstek Portable AC Refrigerant Halogen Gas Leakage Detector Tester with High Sensitivity
Signstek Portable AC Refrigerant Halogen Gas Leakage Detector Tester with High Sensitivity
By Signstek
In Stock
$69.00
$34.99
You Save: 49%

mpn: HLD-100+, ean: 6922302502034,

4.8 out of 5 stars with 29 reviews
The Signstek HLD-100+ gas leakage detector is used to detect halogen gas leakage,designed with high sensitivity and stable function, is the most reliable negative corona halogen leak detector at present. Functions: A: Detect leaks in air-conditioning...


Universal Security Instruments SS-770-3P Battery Powered Ionization Smoke and Fire Alarm, 3-Pack
Universal Security Instruments SS-770-3P Battery Powered Ionization Smoke and Fire Alarm, 3-Pack
By Universal Security Instruments
In Stock
$27.51

mpn: SS-770-3P, ean: 0042741337700,

4.1 out of 5 stars with 41 reviews
Universal Security Instruments SS-770-3P Battery Powered Ionization Smoke and Fire Alarm, 3 Pack, are fast and easy to install - no wiring required. This is a perfect choice for new or replacement installations. The convenient 3-Pack contains three (...


Wally Starter Kit for Smart Detection of Water Leaks, Freezing, and Mold Conditions
Wally Starter Kit for Smart Detection of Water Leaks, Freezing, and Mold Conditions
By Wally
In Stock
$99.99

mpn: U02I006C.01, ean: 0085408800520,

4.1 out of 5 stars with 55 reviews
Wally is a complete water, temperature and humidity monitoring solution that reduces damage from indoor environmental issues common to residences. Through a network of wireless sensors Wally monitors for potential water leaks, faulty HVAC systems, mo...


KIDDE 21026350 Plug In Carbon Monoxide Alarm with Sealed Lithium Battery Back Up
KIDDE 21026350 Plug In Carbon Monoxide Alarm with Sealed Lithium Battery Back Up
By Kidde
In Stock
$51.49
$43.77
You Save: 15%

mpn: 21026350, ean: 0047871263509,

4.6 out of 5 stars with 145 reviews
Kidde plug in carbon monoxide alarm with 10 year sealed battery back up with digital display is an easy to install product that provides reliable protection against the dangers of carbon monoxide. The 10 year sealed battery offers protection during p...


CaiKot 44, Conductive Silver/Carbon Coating for most surfaces
CaiKot 44, Conductive Silver/Carbon Coating for most surfaces
By CAIG Laboratories
In Stock
$10.07
$9.80
You Save: 3%

mpn: K-CK44-G, ean: 0697429014208,

4.2 out of 5 stars with 35 reviews
This product can be used as a coating for shielding, and may be mixed with the circuit writer conductive silver/nickel based ink to acquire the best sheet resistance for each application. It is also durable and convenient to use. It is definitely a g...


First Alert P1010 Atom Photoelectric Smoke Alarm with 10-Year Battery
First Alert P1010 Atom Photoelectric Smoke Alarm with 10-Year Battery
By First Alert
In Stock
$39.99
$24.88
You Save: 38%

mpn: P1010_7, ean: 0029054011961,

4.5 out of 5 stars with 117 reviews
Combining premium smoke detection with a sleek, compact design, the First Alert P1010 Atom Photoelectric Smoke Alarm with 10-Year Battery delivers the same advanced protection as a traditional alarm while taking up only a fraction of the space. This ...


First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
By First Alert
In Stock
$41.99
$18.19
You Save: 57%

mpn: FATCO605, ean: 0029054000729,

4.4 out of 5 stars with 56 reviews
Keep your family safe with this easy-to-use plug-in carbon monoxide alarm; it works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure. Features an advanced ele...


UL Listed Mini Smoke Alarm, Ardwolf Photoelectric Smoke Detector with Lithium Battery Power, 10-Years Service Time, GS521C Fire Alarm Work for Home, School, Hotel, Hospital, Warehouse
UL Listed Mini Smoke Alarm, Ardwolf Photoelectric Smoke Detector with Lithium Battery Power, 10-Years Service Time, GS521C Fire Alarm Work for Home, School, Hotel, Hospital, Warehouse
By Ardwolf
In Stock
$19.99

mpn: GS521C, ean: 6761342270646,

4.5 out of 5 stars with 103 reviews
85dB Alarm - Mini Smoke Alarm comes with early warning against fire by sounding a loud 85dB audible alarm.. Smoke Detector No Wiring needed,10 years sealed batteries provide Continuous protection - even in the event of a power outage. Photoelectric s...


GE Personal Security Indoor/Outdoor Alarm with Remote, Wireless, 100dB Siren, Weather Resistant, Easy to Use, Easy to Install, Perfect for Home, Gate, Shed, Workshop and More, 45242
GE Personal Security Indoor/Outdoor Alarm with Remote, Wireless, 100dB Siren, Weather Resistant, Easy to Use, Easy to Install, Perfect for Home, Gate, Shed, Workshop and More, 45242
By GE
In Stock
$86.99

mpn: FBA_45242, ean: 0780320040480,

4.9 out of 5 stars with 33 reviews
The GE Personal Security Indoor/Outdoor Alarm with Remote provides additional security for your home, yard or trunk. Easily activate and deactivate the alarm using the remote that works up to 100 feet away. The loud 100-decibel alarm deters would-be ...


Apollo DSP11-LV Diablo Loop Detector (10-30 VAC/VDC Voltage - 1piece) detects vehicle presence
Apollo DSP11-LV Diablo Loop Detector (10-30 VAC/VDC Voltage - 1piece) detects vehicle presence
By Apollo
In Stock
$99.95

mpn: 1,

4.9 out of 5 stars with 107 reviews
The DSP-11 Vehicle is a simple, switchless vehicle detector available with the industry standard 11-pin base. Two models for your complete 11-pin vehicle detector needs: · The DSP-11-LV which will operate on any voltage · and any polarity from 10 t...


First Alert Battery-Operated Carbon Monoxide Alarm and Smoke Detector (Works with Iris)
First Alert Battery-Operated Carbon Monoxide Alarm and Smoke Detector (Works with Iris)
By First Alert
In Stock
$68.35

ean: 0029054011381,

4.2 out of 5 stars with 38 reviews
Battery-Operated Carbon Monoxide Alarm and Smoke Detector (Works with Iris)Iris compatible smoke and carbon monoxide alarm. Photoelectric smoke sensing technology reduces false alarms. Compatible with Iris system to receive mobile alerts when alarm i...


Gufasotre 5pcs Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. ¾” Door Contact Position Switches (DCS) Work with All Access Control and Burglar Alarm Systems (Black)
Gufasotre 5pcs Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch. ¾” Door Contact Position Switches (DCS) Work with All Access Control and Burglar Alarm Systems (Black)
By Gufastore
In Stock
$13.99

mpn: GF19006, ean: 0706973691077,

4.8 out of 5 stars with 30 reviews
5pcs Black Recessed Door Contacts NC Security Alarm Window Sensors With Magnetic Reed Switch and Lead Wire Net Weight: 115g ; Material: ABS; Magnetic Door Swith Size:φ19*19mm /0.75"*0.75"; Lead Wire Size:1007UL #24AWG 260mm; Transmitting Distance: 2...



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