Household Sensors & Alarms

Compare household sensors and alarms by what they detect, how they alert you, how they connect, and where they can be installed. Review specifications to find options suited to your home.

159 products in catalog

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MASSWELL

Water Leak Detector, Up to 120 DB, 72 Hours, Louder Sound, Longer Alarm Detection Sensor for Pefect Protection of Your Belongings, 3 Pack

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LAMZ

LAMZ Natural Gas Leak Detector - Pen-Type Portable Combustible Gas Sniffer with Visual and Audible Alarms - Compact and Easy to Use, Natural Gas Detector for Home, Includes 2 Batteries | H160

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THIRDREALITY

THIRDREALITY Zigbee Water Leak Sensor with Dripping Detection 4 Pack, 120 dB Alarm, App Notifications Enabled When Work with Home Assistant and Compatible Zigbee HUB, Batteries Included

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Toeeson

Door Window Alarm, Toeeson 120 DB Window Alarms for Home, White Pool Door Alarms for Kids Safety

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Wasserstein

Wasserstein Smart Wi-Fi Water Sensor for Flood & Leak Detection

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Diversitech

Diversitech WS-1 Wet Switch Flood Detector

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Honeywell

Honeywell RWD41 Water Defense Water Sensing Alarm

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Honeywell

Honeywell RWD41 Water Defense Water Sensing Alarm

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DBY

Water Alarm with 6 ft Extended Sensor Sensor for Water Leakage Detection, 110dB Audio Sensitive Flood Alarm, Battery Included, LA Homieta WA08(4 Packs)

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LA Homieta

Water Alarm with 6 ft Extended Sensor Sensor for Water Leakage Detection, 110dB Audio Sensitive Flood Alarm, Battery Included, LA Homieta WA08(3 Packs)

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LA Homieta

Water Alarm, with 6 ft Extended Sensor Sensor for Water Leakage Detection, 110dB Audio Sensitive Flood Alarm, Battery Included, LA Homieta WA08

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Signstek

Signstek Halogen Leak Detector Tester with High Sensitivity,3g/yr (0.1oz/yr)

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YoLink

YoLink Smart Home Starter Kit: Hub & 2-Pack Water Leak Sensor 1, LoRa Up to 1/4 Mile Open-Air Range, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant

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Zorvo

zorvo Natural Gas Detector for Home, Plug in Propane Gas Detectors & Alarms with High Sensitivity Sensor, Lpg LNG Coal and Natural Gas Leak Detector for Home and Kitchen

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Aenllosi

Aenllosi Hard Carrying Case Replacement for Techamor Y201 Methane Propane Combustible Natural Gas Leak Sniffer Detector(only case)

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Fibaro

Fibaro FGBHFS-101 Flood, Water & Temperature Sensor Homekit enabled water leakage detector, white

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Simple SENCE

SimpleSENCE Water Leak and Freeze Detector, Smart WiFi Water and Freeze Sensor with Audible Alarm and Text & E-Mail Notification. Continuous Monitoring for Your Home and Investment Property (5 Pack).

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EnviroTestKits®

Safe Home® DIY Lead in Drinking Water Test Kit – at Home Testing for Lead in City Water or Well Water – Detection to 5ppb – 10 Minute Test – 4-Pack

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Honeywell

Honeywell Resideo RWD14 Water Alarm

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FloodStop

FloodStop Water Heater Auto-Shutoff Valve, FS3/4NPT, V4 Controller, Water Damage Prevention

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CUSBON

CUSBON Gas Leak Detector, Combustible Gas Leak Tester with Gas Sniffer to Locate Gas Leaks of Methane, LPG, LNG, Fuel, Sewer Gas. Alcohol, Gasoline, Toluene, Kerosene and Other Flammable Gases

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Shonmau

WiFi Water Sensor 100dB Alarm, Smart Water Leak Detector, Tuya APP Free Remote Monitoring of Leakage, 5.9FT Detection Line, Mute / 6 Ringtones Adjustable, Can Open SMS and Phone Notification Function

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Elexa USA

Dome Home Automation Leak Sensor – Wireless Z-Wave Plus with Remote Sensor Probe. Water Resistant. White (Indoor Use)

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Tadeto

Tadeto Natural Gas Detector 2.6'' LCD Screen Gas Leak Detector 50-50000PPM High Sensitivity Gas Detector with 12" Gooseneck Sensor Probe, Audible and Visual Alarm, Compact and Lightweight

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