Best Gas Detectors 2025

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Last Updated - 27.07.2025

Best Choice

01

TOPTES

TopTes Guard-101 Gas Detector, 4 Gas Detectors for H2S, CO, LEL and O2, with Vibration, Light and Sound Alarm, 14 Hours Battery Life, Explosion-Proof, for Work and Home - Orange

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9.6

Exceptional

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User-friendly Design The Guard-101 gas detector is made of high-strength ABS engineering plastic, which is waterproof, dustproof and explosion-proof. The back strap design makes it easy to carry in the workplace. Password protection prevents accidental operation; initial password is "69"
TRIPLE ALARM, DATA STORAGE The Guard-101 uses three alarm modes: LED light, vibration and sound. It reacts within 30 seconds and alerts continuously until the gas concentration returns to normal. The Guard-101 also has an alarm recording function that allows you to view the monitoring data at any time
PROFESSIONAL CERTIFICATION The Guard 101 4 gas monitor has passed rigorous safety testing by internationally recognized institutions. The product has a valid calibration certificate and relevant certification documents that meet industry standards, ensuring high reliability and accuracy in different environments
PACKAGE INCLUDES You will receive a Guard-101 gas detector, a packaging box, a user manual, a charging cable and a standard gas cuff. The detector is suitable for various applications, including industrial production, mining, agriculture, emergency rescue and home use to ensure your safety and that of those around you
FAST DETECTION, SAFETY FIRST The Guard 101 4 gas monitor is designed for fast detection of four types of gas (H₂S, CO, LEL, O₂). The battery life is up to 14 hours to ensure long-term monitoring of gas concentrations

99,99 €
02

TOPTES

TopTes PT520A Natural Gas Detector for Home and Motorhome with 43.5 cm Probe for Detecting Gas Leaks such as Propane, LPG (3 x AAA Batteries Included, German Instruction Manual) - Orange

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9.4

Excellent

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What you get: 1 x PT520A gas leak detector, 3 x AAA batteries, 1 x protective case, 1 x user manual (English language not guaranteed)
USER FRIENDLY FEATURES Enable or disable the auto power off function via the APO button. If you disable this function, the detector turns off after 10 minutes of inactivity to save power. You can also turn off the acoustic alarm via the mute button to avoid alarm noise. The double-sided rod-shaped groove design and non-slip material make it wear-resistant and it always sits comfortably in the hand
Optical and audible alarm: PT520A responds quickly within 0.5 seconds when gas is detected. Seven coloured analogue bars and an acoustic 75dB buzzer help you locate the location of the gas leak. Both increase with the concentration of flammable gases. Detection range: 50 to 10,000 ppm (based on methane)
FLEXIBLE PROBE EASY TO USE With a 17.1 inch flexible gooseneck (bendable in any direction), the portable gas leak detector allows you to easily access hard to reach areas, such as natural gas pipes, propane storage tanks, gas fireplaces, sewerage, basements, RVs and other tight spaces. It can be taken anywhere to find leaks indoors and outdoors, whether outdoors or in enclosed spaces
Effective gas leak detector: TOPTES PT520A can help you accurately locate gas leaks of various flammable gases in tight spaces, such as methane, natural gas, propane, LPG, petrol, etc. Note: please allow 30 seconds warm-up time before operation

39,99 €
Value for Money

03

D MODUN

Gas Detector, LPG/Natural Gas/Coal Gas Leak Detector, Plug-In Sensor Gas Monitor with Acoustic Alarm and LED Digital Display, Methane Propane Butane Alarm for Flammable Gases in the Kitchen, Hospital

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22% Off
9.3

Excellent

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【Keep Safety】-- The gas detector is mainly used to detect natural gas (main components: methane), liquefied gas (main ingredients: propane, butane) and city coal gas (alkane, olefin, arena). When the leak of flammable gases exceeds the standard, the gas detector emits a slow or accelerated or fast, continuous 85DB sound alarm. It cannot detect toxic gases such as carbon monoxide
Test method: Press and hold the lighter switch on the gas inlet of the methane detector and release the air slowly (do not turn on the lighter during draining). When the concentration reaches the standard, an alarm is triggered until the volume of the ambient gas falls below the alarm point. Precautions: The warm-up time of the system is approx. 2-3 minutes. During this time, the guest test will not work
Note on installation: this gas alarm uses high-quality sensors, semiconductor heating and SMT chip technology; do not install it in a place with a lot of dust, oil smoke and water vapor, as this can lead to false alarms; choose a suitable place to install the alarm depending on the actual situation
LED digital display and acoustic warning: the gas detector indicator shows 0 under normal conditions. If a flammable gas leak is detected, the numbers 1-9 and A can be displayed on the screen. The alarm sounds and flashes red as soon as the concentration is above 3% UEG. The alarm is in different alarm states, which depend on the concentration of the combustible gas
Durability and energy saving: standard European plug design, plug and play, no converter required, makes installation extremely easy and practical. Plastic ABS frame, easy to clean. Consumption <2 watts of electricity, significant energy saving. Widely used for restaurant, kitchen, hospital, hotel, oil factory, garage, gas station and so on

18,01 € 23,36 €(22% Off off)
04

Firlarm

Firlarm - Gas Detector for the Household, City Gas, Methane Propane Butane Natural Gas, LPG, City Gas Alarm, Flammable Gas Warning Detector, Plug-in

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15% Off
9.2

Excellent

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We are here for you: If you have any questions about the product, we always offer professional support.
Test method: press and hold the test button on the device and slowly release gas (do not use fire!). The alarm sounds when the threshold is reached and stops when returning to safe level. (Note: 2-3 minutes preheating time required.)
Real-time monitoring: 24 hours monitoring When exceeding 3% LEL (lower explosion limit), the device immediately activates an 85 dB loud alarm with red flashing light. The alarm level adapts to the gas concentration.
Plug and Play: With standard EU plug for easy installation. Housing made of flame retardant PC material. Energy consumption below 2 watts.
Installation recommendations Avoid dusty, greasy or humid environments to avoid false alarms. Choose a suitable location for optimal detection.
EN 50194 CERTIFIED Our gas detector is EN 50194 certified and detects natural gas, LPG (LPG) and city gas. Suitable for kitchens, apartments, villas, hotels and RVs.

21,99 € 26,00 €(15% Off off)
05

BoundlessBrothers

WLAN Gas Detector, Gas Detector for Natural Gas/Bottle Gas/Coal Gas, Gas Detector with 85 dB Alarm, Temperature Display, Compatible with App Control, EN 50194 Certified

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Versatile use - For home and commercial: Ideal for kitchen, caravan, restaurant, warehouse, garage, private home, B&B, holiday home and hotel. Detects even the smallest gas leaks thanks to fast response time - helps prevent explosions and poisoning effectively.
Safe power supply with type C plug: Equipped with an EU standard plug (type C) for reliable continuous operation - even with prolonged alarm. Powered without battery, the device significantly reduces the risk of fires in the event of gas leakage.
Intelligent monitoring with LCD display: Equipped with electrochemical sensors, the device measures the gas concentration (LEL%) and the ambient temperature in real time. The LCD display provides clear and instant information so you can respond quickly when danger.
EN 50194 certified - highest safety: the gas detector is certified according to EN 50194 and reliably monitors flammable gases such as methane and propane. Ideal for home, garage or camper van
Detection of multiple gas types: the device reliably detects natural gas (methane), liquefied gas (propane, butane) and city gas. Thanks to state-of-the-art sensor technology, it accurately monitors the environment to ensure your safety in the home, motorhome or business.
Complete support and customer service in German: includes German instruction manual for quick setup. If you have any questions about installation, use or certificate documentation, our German-speaking customer service is always available - for a worry-free experience.
85 dB loud alarm and real-time notifications: If the gas concentration exceeds 8% of the lower explosion limit (LEL), an 85 dB loud alarm sounds. At the same time, the device sends instant alerts to your smartphone via the Smart Life or Tuya app. Works on 2.4GHz Wi-Fi network.

29,99 €
06

D MODUN

Gas Detector, LPG | Natural Gas | Coal Gas Leak Detector, Plug-in Sensor Gas Monitor with Audible Alarm and LED Indicator, Methane Propane Butane Fuel Gas Alarm for Kitchen, Gas Station, Garage

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17% Off
8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Test method: Press and hold the lighter switch at the gas inlet of the methane detector and release the air slowly (do not turn on the lighter during emptying). When the concentration reaches the alarm threshold, an alarm is triggered until the volume of the ambient gas falls below the alarm point. Precautions: The warm-up time of the system is about 3 minutes. During this time, the guest test will not work
Protect your families: If a flammable gas leak (kitchen methane / natural gas / camping propane) exceeds the standard, the gas detector emits an 85 dB alarm. It cannot detect carbon monoxide and carbon dioxide. Widely used in restaurants, kitchens, hospitals, hotels, oil factories, garages, gas stations, etc
Note on installation: this gas alarm uses an MCU microprocessor control and an SMT procedure; do not install it in a place with a lot of dust, oil smoke and water vapor, as this can lead to false alarms; choose a suitable place to install the alarm depending on the actual situation
LED digital display and acoustic warning: the gas alarm indicator does not light up normally (in standby mode). When a flammable gas leak is detected, the corresponding number is displayed on the screen. The alarm sounds and flashes red once the concentration is above 5% LEL. The alarm is in different alarm states depending on the concentration of the combustible gas
Durable and energy-saving: plug-in gas detector for home use. Main power supply, which makes installation super easy and convenient. High quality ABS plastic frame, easy to clean. It consumes ≤2 watts of electricity, saves a lot of power

18,82 € 22,86 €(17% Off off)
07

ABUS

ABUS gas detector GWM100ME for gas heaters - natural gas (methane) / town gas - alarm volume 85 dB - white - 81443

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23% Off
8.5

Good

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Main highlights

Signal for end of life (5 years - starts from commissioning for the first time) - Energy consumption: <4W
External power supply: AC220-240V, 50Hz / 60Hz - no battery change required
Detects natural gas (methane) reliably and thus protects against gas explosions
Built-in test button for a function test - Tested and certified according to EN50194-1: 2009
Acoustic and optical alarm signals - volume 85 dB

39,90 € 52,20 €(23% Off off)
08

TOPTES

Gas Detector, TopTes PT299 Gas Leak Detector with Telescopic Rod, Portable Gas Sniffer for Finding Flammable Gas Leaks such as Methane, Propane for Home and RV (Includes 2 Batteries) - Orange

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8.4

Good

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What you get: 1 x PT299 gas leak detector, 3 x AAA batteries, 1 x storage bag and 1 x user manual (English language not guaranteed). We offer 36-month customer service and lifetime technical support. Please feel free to contact us if you have any questions or concerns
Visual and acoustic alarms: the PT299 reacts within 0.5 seconds as soon as gas is detected. 19 analog bars and a 75dB loud buzzer help you locate the location of the gas leak. As the concentration of combustible gases increases, both increase and the LCD screen turns red. Detection range: 1%LEL to 10%LEL (*based on methane)
User-friendly and energy-saving: The PT299 is equipped with a non-slip texture and materials that make it easier to grip and hold. With the auto power-off button, you can turn the auto shut-off function on or off. When activated, the PT299 gas leak detector automatically turns off after 5 minutes of inactivity to save energy
Telescopic rod for easy accessibility: The PT299 has a telescopic rod that allows you to easily reach hard-to-reach areas such as natural gas pipes, propane storage tanks, gas ovens, sewers, basements, RVs and high rooms. It retracts when not in use and can be easily stored in the bag. The pen clip allows you to take it anywhere.
Extendable gas leak detector: The TopTes PT299 gas detector reliably detects and locates flammable gas leaks, including propane, methane, natural gas, liquefied gas, petrol, etc. This minimises the risk of gas explosion and protects the safety of your family's life and property. *Note: Please allow 30 seconds warm up time before use.

27,99 €
09

YOJOCK

YOJOCK Gas Detector Home and Gas Detector Motorhome - Gas Detector Motorhome Detects Methane, Propane and More (Includes 2 Batteries, Storage Bag, German Instructions) Red

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8.3

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Versatile Detection The YOJOCK gas detector detects LPG, methane, propane, natural gas and more. This gas detector helps you precisely locate leaks and reduce risks - ideal for home, motorhome and caravan.
Package Contents and Customer Service The gas detector comes with 1 x gas detector, 1 x storage bag, 2 x batteries and 1 x user manual in English, German, Italian, French and Spanish.
Effective Alarm Function The gas alarm provides a visual and audible alarm within 0.5 seconds after gas detection. The LCD screen turns red and the alarm sound becomes louder as gas concentration rises to warn you of dangerous gas leaks.
Easy to use: this battery operated gas detector comes with 2 x AAA batteries. After a short warm-up time of 30 seconds, the gas meter is ready to use. It shows the remaining battery charge and automatically turns off after 5 minutes without use.
COMPACT AND CONVENIENT DESIGN Portable pocket-sized with pen hook, ideal for use in the RV, caravan or home. The non-slip design and included storage bag make the gas detector for caravans battery operated convenient and easy to store.

19,99 €
10

TOPTES

Toptes PT205 Gas Leak Detector with Acoustic and Optical Alarm, Gas Tester with %LEL Value of Propane, Methane, Butane and Combustible Gas, for Home, Motorhome (Includes Battery x 2) Orange

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8.2

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Visual & Audible Warning The PT205 is equipped with a fast 0.5 second gas detection and provides both visual and acoustic gas alarm. With increasing gas concentration, the bar indicator increases, accompanied by a clear beep. At high gas concentrations, a red indicator appears on the LCD screen to increase safety awareness
Flammable gas detector: The TopTes PT205 is an improved gas detector that ensures the safety of your home and loved ones. The PT205 is compatible with a variety of flammable gases including LPG, methane, ethane, propane, butane, natural gas, coal gas, gas fuel and liquefied natural gas
Convenient and ready to use: the PT205 comes with 2 AAA alkaline batteries which ensure immediate operational readiness. The device has a short warm-up time of 30 seconds and a countdown timer on the display that informs you of the readiness for operation. The low battery indicator and automatic shut-off function make the device user-friendly and reliable
COMPACT AND PORTABLE The PT205 is a handy pocket sized pen with a secure pen hook for easy transportation. The non-slip surface ensures a secure grip and the included carry bag makes storage easier. This gas leak detector is ideal for camping enthusiasts, DIY enthusiasts and homeowners with gas appliances and saves you expensive diagnostic costs and the risk of undiscovered gas leaks
%UEG detection: The PT205 natural gas detector is characterised by an innovative function: precise detection of the lower explosion limit (UEG) in percent (%UEG) in the range of 1%UEG to 10%UEG (100ppm-5,000ppm, based on methane). Whether detecting gas leaks or assessing explosion risks, with the %UEG detection of the PT205 you are always informed and on the safe side

25,99 €