

🚨 Detect leaks before they become disasters—because safety can’t wait!
The Forensics Sewer Gas Leak Detector features a cutting-edge Japanese semiconductor sensor with a 20-year lifespan, delivering precise detection of flammable gases like natural gas, propane, and hydrogen. Its robust, explosion-proof design withstands tough environments, while adjustable multi-mode alarms (audio, visual, vibration) ensure immediate alerts. Ideal for bathrooms, drains, and plumbing, it comes with a 1-year warranty and rigorous USA-based quality testing, making it a trusted choice for professionals and homeowners aiming to prevent hazardous leaks.









| ASIN | B07GCHG14G |
| Alarm | Audible, Vibration, Visual |
| Best Sellers Rank | #60,796 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #73 in Gas Detectors & Alarms |
| Brand | FORENSICS DETECTORS FD |
| Color | Yellow |
| Customer Reviews | 3.8 3.8 out of 5 stars (177) |
| Enclosure Material | ABS |
| Item Dimensions D x W x H | 1.18"D x 2.6"W x 8.27"H |
| Item Weight | 16 ounces |
| Manufacturer | FORENSICS |
| Model Number | FD-90E |
| Operating Humidity | 95 percent |
| Power Source | Battery Powered |
| Product Style | Li-ion |
| Sensor Type | Semconducting Metal Oxide Sensor |
| Unit Count | 1 Count |
M**D
Great leak detector for flamable gases
I've been using this leak detector for a couple of years to detect natural gas, propane and hydrogen leaks. It has been very reliable and accurate. It can quickly detect even the smallest leaks. Because it tells you the amount of gas detected in ppm, you can zero in on the leak. I always recommend it to my friends for leak detection in their homes or RVs.
M**R
Manual leaves a lot to be desired, but the unit does what it's supposed to.
First unit I received didn't seem to be working correctly. Reached out to Forensics to understand if I was using the unit incorrectly (the manual is translated from another language and isn't always clear). Turns out the first unit was defective. Forensics quickly sent me a replacement unit. Tested out the second unit and it worked as expected. Natural gas, butane, methane... within a second of being around these gases I had the new unit beeping/vibrating/lighting up. And despite the manual being what it is, after 10 minutes of playing with the 3 button interface, it was simple enough to figure out. All-in-all the unit does exactly what I bought it for. And kudos to Sarah at Forensics for her outstanding customer service.
A**R
Horrible Operation Manual - So bad I returned the gas detector
The most incomplete and poorly written Operation Manual I have ever seen. It does not mention detection of propane, butane, H2, NH3 & alkanes as advertised on Amazon. How can a professional work with a gas detector and not know what gases are being monitored? Other examples of my disappointment: Reference Page 5, description of the “clear” and “save” functions makes no sense. Reference page 7, “method 1” description makes no sense. There is no explanation of how the external pump interface works or how to use it. That is not all, the more I tried to use the Operation Manual the more of this type of thing kept piling up. I tried to call Forensic’s customer service but there is no phone number in the Operator Manual even in the section titled Customer Support. I tried online to get an improved Owners Manual or other help but Forensic’s web site was not helpful. I returned the unit --- I will not waste more of my time working with such an extremely poor Operation Manual.
L**S
The unit detect Combustible of any kind
I have tested th Gas Leak Detector on different combustibles, Propane, Butane, Gasoline, Diesel, All detected properlly, The only improvement I wuls suggest is the booting time is too long. It is about 2 minutes to boot and to perform, Sound, Vibration and Light test. regards Luis
D**.
Not for radon gas!
It works fine for sewer and natural gas. Thats all I have used it for. It saved me a lot of money and ended my health problems associated with leaks.
P**S
Not accurate
Sometimes works most of the time doesn’t Not ideal for a gas detector
L**B
It found the smell problem!!
We had an intermittent bad smell in our bathroom and couldn’t figure out where it was coming from. A sewer smoke test was going to be prohibitively expensive. Within a few minutes the sewer gas detector found that the toilet base was the problem. At the bolt hole it found 500ppm…
S**M
good
good
A**S
Mi piace la sensibilità... Un po' ferragunosa da programmare.. Mancano i gradi Celsius...
M**U
Non e cosi tanto buono. Speravo che fosse piu sensibile. Funzionale pero si fa fatica.
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