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Amazon Best Sellers
Our most popular products based on sales. Updated hourly.
Best Sellers in
Household Sensors & Alarms
#51
Honeywell Home RWD21 Water Leak Alarm
4.5 out of 5 stars
971
$10.12
-
$27.99
#52
First Alert Brk 9120b Hardwired 120v Smoke Alarm Dectector With 9v Battery Backu
5.0 out of 5 stars
1
$13.35
#53
Kidde KA-F Smoke Detector Quick Convert Adapter from Firex to Kidde (900-0149)-2PK
4.6 out of 5 stars
927
$14.00
-
$27.18
#54
Govee Water Detectors, 100dB Adjustable Audio Alarm, Sensitive Leak and Drip Alert, for Kitchen Bathroom Basement (Battery Included)
4.6 out of 5 stars
908
$9.99
#55
Smoke and Carbon Monoxide Detector - with LCD Display, Battery Operated Smoke CO Alarm Detector Combo Unit
4.4 out of 5 stars
509
$22.48
#56
2 Pack Combination Smoke and Carbon Monoxide Detector 10 Year Battery Operated with Digital Display, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen
4.1 out of 5 stars
337
$42.99
#57
X-Sense SD03 10-Year Battery Smoke Detector Alarm, ETL Listed Fire Alarm with Photoelectric Sensor, Auto-Check & Silence Button
4.7 out of 5 stars
520
$27.99
-
$255.99
#58
First Alert BRK SC9120B Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup (Pack of 2)
4.8 out of 5 stars
186
$73.99
#59
First Alert Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display, CO710
4.7 out of 5 stars
751
9 offers from
$48.26
#60
BLACK+DECKER Thermal Leak Detector (TLD100)
4.2 out of 5 stars
3,104
$38.07
#61
X-Sense Carbon Monoxide Alarm Detector, Replaceable Battery-Operated CO Alarm Detector with LCD Display, Compliant with UL 2034 Standard, CO03D
4.7 out of 5 stars
42
$28.99
#62
First Alert BRK 9120LBL Hardwired Smoke Detector with Adapter Plugs for Easy Replacement
4.6 out of 5 stars
225
$15.28
-
$42.48
#63
X-Sense 10-Year Battery Smoke and Carbon Monoxide Detector with LCD Display, Dual Sensor Smoke and CO Alarm Complies with UL 217 & UL 2034 Standards, Auto-Check, SC08
4.7 out of 5 stars
54
$39.99
-
$107.99
#64
Airthings - 2930 Wave Plus - Radon & Air Quality Monitor (VOC, Humidity, Temp, CO2, Pressure)
4.3 out of 5 stars
661
$229.00
#65
Zircon Leak Alert Water Leak Detector & Flood Sensor Alarm/ Water Leak Sensor with 90Db Audio Alarm/ Battery Powered-Batteries Not Included
4.4 out of 5 stars
1,933
$11.99
-
$105.99
#66
Gas Detector Portable Natural Gas Tester Detector | Combustible Propane Methane Gas Sensor Sniffer with Sound Light Warning, Adjustable | CE Certified (P-AS8800L (Sound&Light Model))
4.5 out of 5 stars
958
$30.98
-
$39.90
#67
Klein Tools ET120 Gas Leak Detector, Combustible Gas Leak Meter with 18-Inch Gooseneck Has Range 50 - 10,000 ppm, Includes Pouch, Batteries
4.6 out of 5 stars
423
$101.29
#68
SABRE Door Handle Alarm – 110dB Door Alarm for Home Security – Audible up to 600 Feet (185M) Away – Vibration-Triggered Security Alarm Sounds when Door Knob is Touched from Outside
4.0 out of 5 stars
1,602
$8.99
-
$23.27
#69
First Alert BRK CO5120BN Hardwired Carbon Monoxide (CO) Detector with Battery Backup
4.7 out of 5 stars
554
$30.63
#70
DIY Mold Test, Mold Testing Kit (3 tests). Lab Analysis and Expert Consultation included
4.3 out of 5 stars
1,193
$45.95
#71
2 Pack Photoelectric Smoke Detector Sealed-in 10 Year Lithium Battery-Operated Fire Alarm
4.5 out of 5 stars
447
$30.99
#72
6 Pack Fire Alarms Smoke Detector Battery Operated with Photoelectric Sensor and Silence Button, Travel Portable Smoke Alarms
4.5 out of 5 stars
365
$50.99
#73
Combination Smoke and Carbon Monoxide Detector Alarm, GLBSUNION Beeps Warning Smoke and CO Alarm for Basements Travel Home Office Kitchen Bedroom, Battery Operated, Comply with UL 217/2034,1-Pack
4.4 out of 5 stars
358
$15.99
-
$29.99
#74
10 Year Battery (Not Hardwired) Combination Photoelectric Smoke Detector and Carbon Monoxide Detector Alarm with LCD Display
4.4 out of 5 stars
511
$29.99
#75
Govee Water Detectors 2 Pack, 100dB Adjustable Audio Alarm, Sensitive Leak and Drip Alert, for Kitchen Bathroom Basement (Battery Included)
4.6 out of 5 stars
873
$19.99
#76
FireX 4618 Dectector
4.6 out of 5 stars
178
$13.05
-
$20.00
#77
Handheld CO Detector,Carbon Monoxide Meter, Portable CO Gas Leak Detector, Gas Analyzer, High Precision Detector, 0~1000ppm(Battery NOT Included)
4.2 out of 5 stars
219
$55.99
#78
Instapark Water Leakage Detection Alarm and Sensor, Low Battery Alert Pack of 3
4.5 out of 5 stars
1,765
$19.99
#79
Moen 900-001 Flo by Moen 3/4-Inch Smart Water Shutoff with 920-004 Flo by Moen Smart Water Detector, 1-Pack
4.5 out of 5 stars
415
$369.00
-
$925.99
#80
First Alert Smoke Detector and Carbon Monoxide Detector Alarm | Battery Operated, SCO5CN (1-Pack)
$37.99
-
$139.00
#81
Smoke and Carbon Monoxide Detector - Battery Operated Smoke CO Alarm Detector Combo
4.2 out of 5 stars
771
$17.48
#82
Kidde AC Plug-In Carbon Monoxide and Explosive Gas Detector Alarm | Nighthawk Sensor Technology | Model # KN-COEG-3
4.7 out of 5 stars
5,450
$39.24
-
$147.97
#83
4 Pack Smoke Detector Fire Alarms 9V Battery Operated Photoelectric Sensor Smoke Alarms Easy to Install with Light Sound Warning, Test Button,9V Battery Included Fire Safety for Home Hotel
4.5 out of 5 stars
260
$29.99
#84
Kidde KN-COSM-IBA Hardwire Combination Smoke/Carbon Monoxide Alarm with Battery Backup and Voice Warning, Interconnectable (2 Pack)
4.7 out of 5 stars
309
$62.90
#85
X-Sense CD07 Carbon Monoxide Detector Alarm, 10-Year Battery (Not Hardwired) CO Alarm Detector with LCD Display, Compliant with UL 2034 Standard, Auto-Check & Silence Button
4.7 out of 5 stars
261
$35.99
-
$93.99
#86
Natural Gas Detector, Propane Detectors for Home,Natural Gas Propane Leak Alarm for Home Kitchen, High Sensitivity Natural Gas Propane Leak Detection
4.5 out of 5 stars
268
$17.99
#87
First Alert Carbon Monoxide Detector Alarm|No Outlet Required with Digital Display and Peak Memory, Battery Operated, CO410
4.6 out of 5 stars
844
$27.52
-
$78.35
#88
2 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, with Display, Auto-Check, White
4.6 out of 5 stars
230
$36.99
#89
Kidde - 21006407 AC Hardwired Operated Carbon Monoxide Detector Alarm with Digital Display | Model KN-COP-IC
4.8 out of 5 stars
442
$33.29
-
$106.24
#90
Radon Test Kit for Home - Easy to Use Charcoal Radon Gas Detector for Peace of Mind | 48-96h Short Term EPA Approved Radon Tester | Includes Lab Fees | Protect Yourself and Your Family | 1-Pack
4.4 out of 5 stars
389
$22.99
#91
Propane/Natural Gas Detector, Home Gas Leak Alarm, Tester, Sensor, Sniffer; Monitor Combustible Explosive Gas Level: Methane, Butane, LPG, LNG; Voice/Light Warning & LED Display; eBook
4.3 out of 5 stars
847
$29.99
#92
Natural Gas Detector, Gas Leak Detector, Household Propane Leak Detector, Propane Leak Detector, Natural Gas Leak Detector (White) (1, White)
4.5 out of 5 stars
147
$17.99
-
$33.99
#93
First Alert Hardwired Wireless Smoke Alarm with Photoelectric Sensor and Battery Backup, SA521CN-3ST
4.4 out of 5 stars
456
$35.99
#94
2 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Portable Smoke and Co Alarm for Home Bedroom Travel
4.5 out of 5 stars
189
$38.99
#95
Honeywell Home RCHW3610WF1001/N Wi-Fi Water Leak Detector, White
4.0 out of 5 stars
797
$53.55
#96
SimpliSafe Water Sensor Alarm-Flood Detection-Compatible Home Security System (New Gen)
4.8 out of 5 stars
219
$19.99
#97
Flume 2 Smart Home WiFi Water Monitor and Leak Detector: Detect Water Leaks Before They Cause Damage. Monitor Your Water Use in Real Time to Reduce Waste. Installs in Minutes, No Plumbing Required
4.6 out of 5 stars
92
$199.00
#98
Kidde 21006406 Hardwire Carbon Monoxide Detector Alarm with Battery Backup, Interconnectable | Model KN-COB-IC
4.7 out of 5 stars
981
$19.99
#99
Kidde AC Hardwired Interconnect Smoke Alarm with Hush i12040 4 Pack
4.7 out of 5 stars
396
$52.00
#100
SITERWELL Smoke Detector , Fire Alarm Smoke Detector with Photoelectric Sensor and 9V Battery Operated(Include), 10-Year Fire Alarm with UL Listed, Fire Safety for Kitchen,Home, GS528A, 2 Packs
4.5 out of 5 stars
617
$18.99
-
$38.39
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