









🔥 Sniff out leaks before they become headlines! 🛠️
The Klein Tools ET120 Gas Leak Detector is a professional-grade combustible gas tester designed for HVAC pros and safety-conscious managers. Featuring a wide detection range of 50 to 10,000 ppm, dual sensitivity settings, and both visual and audible alerts, it ensures precise and reliable gas leak identification. Its flexible 18-inch gooseneck sensor and ergonomic design make it easy to use in tight spaces, while smart features like auto calibration and power-saving auto shutoff maximize accuracy and battery life. Trusted by professionals since 1857, this tool delivers peace of mind with every sniff.












| ASIN | B074NBJ8XP |
| Alarm | Audible |
| Batteries | 4 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #10,395 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Gas Detectors & Alarms |
| Brand | KLEIN TOOLS |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,842) |
| Date First Available | August 8, 2017 |
| Description Pile | 4 x AAA |
| Display Style | Digital |
| Finish | Brushed |
| Global Trade Identification Number | 00092644690648 |
| Included Components | Batteries, Carrying Pouch |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 13 ounces |
| Item model number | ET120 |
| Manufacturer | Klein Tools |
| Material | Blend |
| Measurement System | Metric |
| Number of Items | 1 |
| Operating Humidity | 85 percent |
| Part Number | ET120 |
| Pattern | Detector |
| Power Source | Battery Powered |
| Product Dimensions | 1.79"D x 2.71"W x 28.3"H |
| Shape | Rectangular |
| Special Features | Audible Alert, Auto-Power Off, Visual Notification |
| Style | Standard |
| UPC | 092644690648 |
| Warranty Description | Please refer to attached warranty document. |
T**G
Excellent, easy to use tool.
I tired other "sniffers" that were just completely worthless. This tool is very simple to operate and conclusively confirms whether there is a gas leak--and if so, where it is coming from. The variable response alert system shows the intensity of any leak, or even better, no leak at all. It is very clear, thereby imparting full confidence in the results. (Because it showed I did not have a leak at the time, I tested this by opening an unlit gas burner and "searched" for it. It worked perfectly.) An invaluable, easy too use tool for all-important peace of mind. Highly recommend.
J**W
What a great nose this thing has!
I had an outdoor gas leak that I could not locate. My cheap gas detector registered nothing, when I could clearly smell gas. I purchased this unit and put it to work. Much better sensitivity, it clearly registered flammable gas when I could even faintly smell it. With a little patience, walking around the area, I was able to zoom in on sections with multiple bars and a louder audible pitch. I zeroed in to a section of pipe where I got maxed out readings and found a worn area of the pipe that was leaking. A little more expensive, but worth it, it works well.
B**F
Klein gas detector
Very prompt shipment. Klein gas sniffer is of professional quality. I found a small gas leak in newly installed hot water heater. Plumber had the same sniffer and laughed when he saw mine.
L**S
Sensitive
I use this gas leak detector at work, and it performs very well. It is easy to use, highly sensitive, and quickly detects gas leaks. The alarm is loud and clear, which helps improve safety on the job. It’s compact, reliable, and a great tool for professional use. I definitely recommend it.
C**S
Works well and I trust Klein quality
There are very expensive professional level meters and a bunch of inexpensive Chinese meters out there. I don't need the pro tool and I don't trust the inexpensive one. I've been buying Klein tools for decades and they always perform well. I bought this because the gas alarm goes off in our travel trailer every once in a while and I want to find what the problem is. This came today and I tried it on the kitchen gas stove and on the NG BBQ outside. It seems that the high sensitivity setting is very sensitive and responsive. I turned on a burner in the trailer and it immediately went off. I opened the door and held the wand outside and up high and it went off. I brought it back inside and set it beside the burner (which was off) and it was still alerting with fast beeping and five bars. I went to the bedroom and turned on the fantastic fan which sucked air in the open door by the kitchen and exhausted it out the roof. After 15 seconds it dropped a bar and started beeping slower. After a minute the gas was exhausted and it stopped alerting. This seems to be an excellent product and is easy to use.
D**S
The best value of money that I ever invested.
The best gas leak detector I ever bought. There are two safety gas leak. High level of detection, which I love it. And low level of detection, which still I love it. It will detect quick before your nose detect it. The best value of money that I ever invested.
O**A
Great gas leak tester.
Only complaint I have with this, is the calibration takes 30 seconds outdoors but other than that it’s been working well for home inspections. Sensitivity on this is very dialed in as well.
C**B
It sniffed the gas
It is sensitive, it works, it does take some time to boot up. Sometimes it’s easier to grab a bottle of windex. Not that impressed to be honest.
G**.
A little disappointed to find that the batteries that came with the unit were flat and wouldn’t power the unit. Once batteries were changed everything was fine.
T**7
I had to weigh up getting in a gas professional to diagnose severity and location of a possible leak and buying this product.. I did the latter, because I was not prepared to wait. I'm glad I did - old gas oven was leaking past 10mill PPM. Turned off at the mains. No other leaks. Really glad I bought into the tool and took care of it myself. I also appeciate having low or high sensitivity. Only criticism would be I'd like a high PPM for the big leak, but really trivial when it's designed for finding small leaks, more than anything.
C**3
Excelente articulo y sin problema en el tiempo de entrega
I**N
No encendió, cambie las pilas y sigue sin encender.
C**C
Have used the gas tester to locate leaks however the tester can give false readings at times depending on the setting of the Auto Zero calibration button. If the device is left to self calibrate on startup, it can give a constant low level reading throughout the whole house. The detector head is also sensitive to heat and if you cup your hand over the sensor it will start to show low level gas. So if you calibrate in outside clean air where it is cooler, it can give a false low level reading when you bring it in to a room that is warm. If you push the Auto Zero button on startup (Auto Zero light now off) it will still calibrate but now there are no false readings. Raised this issue with Klein Technical Support but after 8 weeks with no technical response despite constant follow up, I can only assume Klein has no clue as to why the issues happen as they simply rebadge a genetic Chinese made tester.
Trustpilot
2 months ago
3 weeks ago