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Internet # 100651812

Model # PNG2000A

Store SO SKU #781975

Electronic Natural Gas Leak Meter & Detector

$39.98
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  • Detects combustible gas leaks in pipes, valves and fittings
  • Natural diffusion sensor detects most combustible gases
  • Alarm sounds & indicator lights illuminate when gas is detected
  • View More Details

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Product Details

About This Product

The Pen Style Natural Gas Detector from General Tools detects natural gas, compressed natural gas, methane (CH4), propane, butane, liquid natural gas (LNG) and liquid petroleum gas (LPG) to locate leaks in pipes, valves and fittings. This essential tool is packed with features such as audible and visible annunciation and a natural diffusion sensor. The high sensitivity of the unit and affordability make it ideal for the technician, do-it-yourselfer or homeowner.

Highlights

  • LEDs: green, on; yellow, 20% +/- 5% LEL; red, 50% +/- 10% LEL (lower explosive limit)
  • Sensitivity: LPG: 2000 ppm; LNG 4000 ppm
  • Detects LNG, LPG, methane (CH4), butane and other flammable gases
  • High sensitivity
  • Low power consumption
  • Microprocessor controller
  • Auto zero calibration
  • Audible and visual alarm
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 100651812

Model # PNG2000A

Store SO SKU #781975

Specifications

Dimensions

Product Depth (in.)

1.5 in

Product Width (in.)

3 in

Details

Alarm/Detector Features

Adjustable Sensitivity

Alert Type

Siren

Battery Type Required

AA

Included

Batteries

Pack Size

1

Power Source

Battery

Returnable

90-Day

Voltage (V)

3

Warranty / Certifications

Certifications and Listings

UL Listed

Questions & Answers

If it lights up yellow, what does it mean?
ByDec 10, 2025
1 Answer | 
Answer This Question

Yellow LED on indicates low concentration of gas. Low gas concentration: between (20±5)% LEL and (50±10)% LEL

By|Dec 12, 2025


    I bought one such pen a few years earlier, but it never could detect a gas leakage while I personally already smelled the gas leakage, and later were confirmand by gas company technician. Useless and misleading product...
    ByMay 17, 2025
    1 Answer | 
    Answer This Question

    cool story. so, what's your question?

    By|Oct 6, 2025


      Will this device detect propane?
      ByJun 25, 2024
      1 Answer | 
      Answer This Question

      Yes this will detect propane.

      By|Jul 3, 2025

        (1)

        Will this detect Freon
        ByFeb 2, 2024
        1 Answer | 
        Answer This Question

        This unit is not guaranteed to detect freon.

        By|Jul 3, 2025

          (1)

          will this devise detect leaks in pipes berried in the ground?
          ByOct 23, 2023
          1 Answer | 
          Answer This Question

          This device will only detect gas that is coming in contact with the sensor at the tip of the unit.

          By|Jul 3, 2025

            (1)

            Will this detect a leak at the tank outside?
            ByJun 8, 2023
            2 Answers | 
            Answer This Question

            As the person above said, in windy conditions you will find it more difficult to detect a reading as the diffusion of the gas will be much faster. Be sure to get as close as possible to the source and so long as the concentration is above (20±5)% LEL, which translates to about 10,000ppm of methane, 4,200ppm of propane, and 3,600ppm of butane. More information can be found here https://www.wermac.org/safety/safety_what_is_lel_and_uel.html .The units can detect gas under these concentrations, but the unit will only initially alarm when (20±5)% LEL is reached.

            By|Jul 3, 2025

              (1)

              I would say yes, But I'm not shore how good it will work if it is very windy, The closer you put it to the source the better it will work out side. I can say it defiantly pick up the odder of natural gas. This unit will work for Minimum detection 200 PPM / There are other that (THD) sale that are Minimum detection 5 PPM But that one is about 232.00.

              By|Jun 8, 2023


                where was this tool manufactured?
                ByJun 27, 2020
                1 Answer | 
                Answer This Question

                This was made in China.

                By|Jul 3, 2025

                  (1)

                  I thought the green light should flash consistently.
                  ByNov 9, 2019
                  1 Answer | 
                  Answer This Question

                  The instructions cover this, but I'm pretty sure that it blinks as it is testing the air, and it turns solid color and beeps when the gas is detected. If you have a natural gas or propane range or furnace, you can test it there and see how it reacts. If you've already tried that unsuccessfully, try removing the battery (a reboot) and try it again. I hope that this helps you out.

                  By|Jul 3, 2025

                  (1)

                  Viewing 1-8 of 18

                  Customer Reviews

                  3.8 out of 5

                  • 3.8 out of 95 reviews
                  • 69% recommend this product
                  Filter by:
                  Showing 1-10 of 95 reviews
                  Does not work
                  Lights worked saying it's operating normal but it wasn't detecting gas leaks. I bought a cheaper model that worked fine.
                  by
                  Response from General ToolsFeb 8, 2022
                  We are very sorry that you are not completely satisfied with your purchase. We appreciate the time you took to write this review. We would like to assist you with your issue. Please call 800-697-8665 Ext 1603 or email us at techsupport@generaltools.com. We will be more than happy to resolve this issue for you.
                    2 found this review helpful
                    It works like promised
                    I smelled gas in my house, but could not tell where it was coming from. Tried the old soap in a squirt bottle and still could not find the leak. I went on line to see if I could find something that would help and came across the General Company's "Gas Seeker". After reading mostly good reviews on the product, I thought I would give it a try.Simple and easy to use. Just push the button, let it warm up and simply pass it over your gas pipes and it will beep and show two different lights if it detects any gas. One light for a small slow leak and another for a larger leak. I found the first leak right away, so I kept checking more gas connections and found four more leaks!. It was money well spent and the price reasonable.
                    by
                    • DIY
                    • Verified Purchase
                    • Recommended
                    30 found this review helpful
                    This customer chose to rate the product and not provide text.
                    by
                    This customer chose to rate the product and not provide text.
                    by
                    It was handy and easy to operate, but didn't seem particularly sensitive. I had a FireX alarm installed as well, which detected gas when this tool did not. I ended up returning it.
                    by
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    Always giving false positives!!! Not good at all!!!
                    by
                    Response from General ToolsJan 8, 2026
                    We are very sorry that you are not completely satisfied with your purchase. We appreciate the time you took to write this review. We would like to assist you with your issue. Please call 800-697-8665 Ext 6 or email us at techsupport@generaltools.com. We will be more than happy to resolve this issue for you.
                    • Verified Purchase
                    Worked as expected. Verified using gas stove.
                    by
                    Response from General ToolsNov 24, 2025
                    We appreciate the positive feedback you kindly submitted on your General Tools purchase. For nearly a century, General Tools has been a recognized leader in the design and development of precision specialized tools. We pride ourselves on delivering the PRECISE tool for the job. Thanks again for your product review. We are pleased that you are satisfied with your General Tools purchase!
                    • Verified Purchase
                    I was hoping to be able to discover the source of the propane leak. I can smell the propane but it is not sensitive enough to detect the small leak.
                    by
                    Response from General ToolsNov 24, 2025
                    We are very sorry that you are not completely satisfied with your purchase. We appreciate the time you took to write this review. Unfortunately, these devices are not as sensitive as your nose, and may not be sensitive enough to determine the leak as you experienced. We do apologize for the inconvenience.
                    • Verified Purchase
                    This tool is unreliable to detect a small leak Had to open an LPG tank flowing gas and there was a three or four second delay in picking up that gas with the tip of the tool stuck in the opening of the valve, not sensitive enough to pick up a minor two medial leak.
                    by
                    • Verified Purchase
                    Showing 1-10 of 95 reviews

                    Compare Key Features

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                    Product Snapshot

                    Great for homeowners seeking reliable leak detection, making home safety checks easier.
                    Great for homeowners looking for leak detection, making gas safety checks easier.
                    Must-have for homeowners seeking reliable gas leak detection with fast alerts and a clear LCD display.
                    Ideal for homeowners who want continuous natural gas protection, ensuring peace of mind.

                    Gas Sensitivity

                    2000 ppm (LPG), 4000 ppm (LNG)
                    50 to 1, 000 ppm
                    Detects methane (natural gas) leaks

                    Detection Speed

                    5 seconds
                    3 seconds
                    0.5 seconds
                    Fast, accurate detection

                    Multi-Gas Detection

                    Alarm Type

                    Audible and visual alarm
                    Audible alarm and Red/Yellow lights
                    75dB buzzer and visual red screen alert
                    Loud 85 dB horn, LED visual indicator

                    Self-Testing Capability