Updated: 24 Feb 2025

smart home gas sensors

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Updated: 24 Feb 2025

#1

Best Choice
Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display

9.8

Honeywell Home

-11%

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Why we love it

Easy installation with guided setup.

Compatible with major smart home systems.

Effective multi-room temperature control.

Main highlights

Energy Efficient Control
Adjusts to your schedule with Auto Home/Away, saving energy and money.

Ideal for Smart Homes
Perfect for integrating with Alexa, Google Assistant, and Apple HomeKit.

Praised Room Sensors
Customers appreciate the accurate and efficient room sensors.

-11%
#2

Value for Money
Spolehli Home Radon Detector, Smart Radon Monitor with High-presion Radon Sensor, Fast Capture of Fluctuating Levels with Trend Charts Data Sharing, Light & Alarm Notification - App & WiFi Needed

9.5

Spolehli

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WHY WE NEED TEST THE RADON: Radon gas is a colorless and odorless radioactive gas, and is present in daily life, including kitchens, living rooms and children's rooms, enters indoors through cracks and gaps in the floor and wall. Official survey data show that 21000 Americans die of radon induced cancer each year, and the radon is 10x more harmful to children. One in 30 people are fundamentally sensitive to radon. As the leading cause of home related deaths, every home needs a radon tester.

HIGH SENSITIVITY& PRECISION RADON SENSOR: Our radon detector adopted high-precision pulsed ion chamber radon sensor, the first radon result is about 10 min, a highly reliable radon result is within 1 hour, radon data update interval 10 min. Note: the range of measurement errors <10% at 10 pCi/L (370 Bqm³) after 10 hours. The longer the test time, the more accurate it is.

AUDIBLE ALERTS & VISUAL INDICATOR: There is a visual led light on the top of the radon tester (green means normal, red means serious, orange means potential), you can set a radon safety level , there will be a light indicator and sound alert when it exceeds this number (the sound alert function can be turned off).
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#3
Natural Gas Detector For Home + Propane Detector + Combustible Gas Detector. Plug-In Natural Gas Alarm, Gas Leak Sensor Explosive LPG, LNG, Methane, Butane, Natural Gas Detectors for Home, kitchen, RV

9.4

GasKnight Detection

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SAVE TIME - Simple Plug & Play! Skip the hassle of complicated installations and battery replacements. Just plug the GasKnight GK2000 propane gas detector in and enjoy peace of mind instantly.

PROTECTION WITH STYLE – GasKnight Detection knows every second counts. That's why our GK2000 natural gas detector gives a pre-alarm at 2.5% LEL (a lower sensitivity) when it identifies: 1. Natural gas (methane, butane, LNG, etc.) or 2. Propane (LPG). And we do it in a modern, aestetically pleasing way!

KEEP YOUR FAMILY SAFE! – With a GasKnight gas sensor in your home, get peace of mind knowing you've taken every step to protect your family from accidents caused by hazardous gas leaks from appliances like stoves, furnaces, water heaters, washing machines, fireplaces, or kitchens.
#4
Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

9.1

Kidde

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Why we love it

Easy plug-in installation.

Loud alarm ensures awareness.

Reliable dual gas detection.

Main highlights

Easy Installation with Battery Backup
Simply plug into a 120V outlet; 9V battery ensures operation during power outages.

Ideal for Gas and CO Monitoring
Perfect for homes with natural gas, propane, or potential CO leaks.

Highly Rated Audible Alarm
Customers praise the loud 85-decibel alarm for effective alerting.
#5
Gedsffati 5IN1 Plug in Carbon Monoxide Detector &Smoke & Combustible Natural Gas Alarm Combination Builti-in Backup Battery HD Screen [Smoke CO Gas Temp Humidity Sensor] for Home Indoor RV (White)

8.9

Gedsffati

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Main highlights

【Plug in & Play design】US standard plug is compatible with 110V to 220V AC outlet. Fits all US standard AC outlet in bedroom, kitchen, living-room, basement, hotel room, etc. Just Plug in and the detector will real-time work all day.

【Built-in 2000 mAh emergency Blackup battery】Provides 18-20h working time, helps to cope with sudden power outages. Rechargable lithium battery design, Compared to other disposable batteries, we can help you save a lot of battery replacement costs.

【5in1 CO & Smoke &Natural gas detectors】Our Gedsffati newest combination 5in1 detectors Integrated carbon monoxide, smoke, Combustible gas( like natural gas, propane, methane, natural gas, coal gas, gasoline, Hexane, butane, benzene, ethyene oxide, acetylene, LPG, LNG, etc),temperature and humidity sensors, real time to detector the environment gas safety for us.
#6
2 Packs Plug in Gas & Carbon Monoxide Detectors, 4-in-1 Natural Gas Leak Detector,Carbon Monoxide Alarm,4 Sensor °F&Humidity,CO & Propane Detector for Home,RV

8.8

KOABBIT

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Main highlights

【Burst Flash Design & Alarm】When combustible gas or carbon monoxide gas reaches the default value, the device immediately emits a burst light, as well as displaying the gas concentration, and 85dB alarm.

【4-in-1 Upgraded Sensor】Highly Reliable, Sensitive and Accurate Sensor

【4-in-1 Combination Gas and Carbon Monoxide Detector】Newly upgraded and optimized, high definition digital large round screen, plug and play, capable of detecting and displaying temperature, humidity, natural gas and carbon monoxide gas levels in real time.
#7
3 Packs Plug in Gas & Carbon Monoxide Detector, 4-in-1 Carbon Monoxide Alarm,Fahrenheit(°F) & Humidity,Natural Gas Detector,Methane,Propane & CO Detector for Home,RV,Apartment

8.7

Hembisen

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Main highlights

【Temperature（°F） and Humidity Sensor】Real-time detection and display of temperature and humidity, let you know the environment in real time.

【Combination Gas & Carbon Monoxide Sensor】 Adopting catalytic combustion sensor and electrochemical sensor, real-time monitoring and displaying the concentration of combustible gas and carbon monoxide, with sharper and more accurate sense of smell.

【3 Packs Upgrade Plug-in Combination Gas & Carbon Monoxide Detector】 Plug and play, easy to install, 4-in-1 sensor, real-time monitoring display and alarm.
#8
2 Pack Combination Gas & Carbon Monoxide Detectors - Plug in CO Alarm & Natural Gas Detector with Digital Display, CO Detector & Combustible Gas Detector for Home, Easy to Read

8.5

KOABBIT

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Main highlights

【LCD Display & 85 High Volume Alarm】When the combustible gas or carbon monoxide gas reaches a certain level, the gas detector will display the gas concentration value and sound an alarm, allowing you to quickly determine and make the right choice.

【Koabbit Combination Gas & Carbon Monoxide Detectors】Plug and play, easy to install and easy to read.

【High Sensitivity Sensors】The gas and carbon monoxide detector contains a catalytic combustion sensor and an electrochemical sensor, both of which are highly sensitive and accurate, allowing you to detect conditions in a timely manner.
#9
2 Packs Combination Gas & Carbon Monoxide Detector, 4-in-1 Natural Gas Detector & Carbon Monoxide Alarm with Temperature(°F) & Humidity,Propane & CO Detector for Home,RV,Apartment

8.3

KOABBIT

-15%

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Main highlights

【Combiantion Gas & Carbon Monoxide Detector】When the dangerous gas reaches the default value, the device will immediately display the dangerous gas concentration and 85dB alarm.

【4-in-1 Upgraded Sensor】Highly Reliable, Sensitive and Accurate Sensor

【4-in-1 Upgraded Gas & Carbon Monoxide Detector】Designed with a large digital display, it detects and displays temperature, humidity,natural gas and carbon monoxide levels in real time for your peace of mind

-15%
#10
LFF CO2 Detector, Wi-Fi Air Quality Monitor Gas Detector, Carbon Dioxide Detector, CO2 Monitor with CO2 Alarm, Temperature, Humidity and Time, Indoor Air Quality Monitor for Home, Kitchen, Room, Car

8.2

LFF

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Main highlights

WI-FI CO2 DETECTOR WITH APP CONNECTION: The Wi-Fi CO2 monitor enables remote air quality monitoring via the Smart Life APP (2.4GHz Wi-Fi only). You can view current air quality readings, export historical data, and analyze trends over time.

HIGH ACCURACY & FAST REFRESH: With the use of NDIR technology, this carbon dioxide detector provides real-time monitoring of indoor temperature, humidity, and CO2 index. The air quality monitor indoor has a CO2 detection range of 400-5000ppm with an accuracy of ±5% +50ppm. Additionally, it can detect temperatures ranging from 14.2℉ to 122℉ (-9.9℃ to 50℃) and humidity levels between 1% and 99% RH.

3-IN-1 AIR QUALITY MONITOR: The gas detector conveniently measures 3 important indexes for air quality, including CO2, temperature, and humidity. It allows for customization of the CO2 alarm value for CO2 concentration and includes dual alarm clocks and snooze functions, making it perfect for daily use at work or home.

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Our top pick

#1

-11%

Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display
The Honeywell Home T9 WiFi Smart Thermostat is a top choice for smart home enthusiasts, offering seamless integration with major platforms like Alexa and Google Assistant. Its standout feature is the Auto Home/Away Scheduling, which intelligently adjusts temperatures based on your routine, ensuring energy efficiency and cost savings. The thermostat is equipped with advanced Smart Room Sensors that detect occupancy, providing focused comfort where it's needed most. Installation is straightforward, with a guided setup that simplifies the process, making it accessible for most users. The T9's sleek design and large touchscreen display make it an attractive addition to any home, while its ability to manage multiple rooms ensures consistent comfort throughout. Whether you're looking to enhance your smart home setup or simply want a reliable, energy-saving thermostat, the Honeywell T9 delivers on all fronts, backed by positive customer feedback on its sensor accuracy and user-friendly app.

smart home gas sensors

Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display

9.8

Why we love it

Main highlights

Spolehli Home Radon Detector, Smart Radon Monitor with High-presion Radon Sensor, Fast Capture of Fluctuating Levels with Trend Charts Data Sharing, Light & Alarm Notification - App & WiFi Needed

9.5

Main highlights

Natural Gas Detector For Home + Propane Detector + Combustible Gas Detector. Plug-In Natural Gas Alarm, Gas Leak Sensor Explosive LPG, LNG, Methane, Butane, Natural Gas Detectors for Home, kitchen, RV

9.4

Main highlights

Kidde Carbon Monoxide Detector, Propane, Natural, Methane, & Explosive Gas Alarm, Plug-In Wall with 9-Volt Battery Backup, Digital LED Display

9.1

Why we love it

Main highlights

Gedsffati 5IN1 Plug in Carbon Monoxide Detector &Smoke & Combustible Natural Gas Alarm Combination Builti-in Backup Battery HD Screen [Smoke CO Gas Temp Humidity Sensor] for Home Indoor RV (White)

8.9

Main highlights

2 Packs Plug in Gas & Carbon Monoxide Detectors, 4-in-1 Natural Gas Leak Detector,Carbon Monoxide Alarm,4 Sensor °F&Humidity,CO & Propane Detector for Home,RV

8.8

Main highlights

3 Packs Plug in Gas & Carbon Monoxide Detector, 4-in-1 Carbon Monoxide Alarm,Fahrenheit(°F) & Humidity,Natural Gas Detector,Methane,Propane & CO Detector for Home,RV,Apartment

8.7

Main highlights

2 Pack Combination Gas & Carbon Monoxide Detectors - Plug in CO Alarm & Natural Gas Detector with Digital Display, CO Detector & Combustible Gas Detector for Home, Easy to Read

8.5

Main highlights

2 Packs Combination Gas & Carbon Monoxide Detector, 4-in-1 Natural Gas Detector & Carbon Monoxide Alarm with Temperature(°F) & Humidity,Propane & CO Detector for Home,RV,Apartment

8.3

Main highlights

LFF CO2 Detector, Wi-Fi Air Quality Monitor Gas Detector, Carbon Dioxide Detector, CO2 Monitor with CO2 Alarm, Temperature, Humidity and Time, Indoor Air Quality Monitor for Home, Kitchen, Room, Car

8.2

Main highlights

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Our top pick

Honeywell Home T9 WiFi Smart Thermostat with 1 Smart Room Sensor, Touchscreen Display

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