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Forensics Detectors
Sensitive and Accurate Gas Detectors

FORENSICS DETECTORS offers sensitive, accurate, and affordable gas detectors, meters, and analyzers. We offer every major type of gas meter and detector to oil and gas, R&D, transport, food, construction, electronics, and occupational safety using only USA NIST calibration gas. The company operates from the scenic Palos Verdes Peninsula in Los Angeles, California, USA.

Innovative Gas Detection
USA operations based in Los Angeles, California, USA.

USA NIST Calibration
Calibration in Los Angeles, CA, USA for maximum reliability and accuracy.

Sensitive Gas Detectors
USA NIST Calibration for reliable, accurate, and sensitive gas detection.

Gas Detector Specialists
We are gas detector specialists and provide Ph.D.-level gas detection support.
⚛️ ACCURATE: Accurate Made in Japan sensor with 20 year life.
🔔 ALARMS: Adjustable Audio, visual, and vibration alarms alert when preset levels are reached.
💪 STRONG: Shock proof, water proof, dust proof and explosion proof.
🌋 USES: Designed to check your Bathroom, Drains, Sewage, and Plumbing.
🕵️ TRUST: ** 1 year limited warranty ** Arrives with calibration and QA certificate ** 100% product test and verification in the USA ** 100% quality guaranteed **
10 reviews for Sewer Smell Leak Detector by Forensics | 20-Year Sensor | Bathroom, Drains, Sewage, Plumbing |
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$99.45

David B. –
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.
Simon H. –
Great item and great customer service
This item helped me decide whether I had a sewer gas leak in my pipes. Plumber wanted more to come and check while this was cheaper I discovered the smell was from the dirty bucket from my robot vacuum since no sewer smells were found by the device.This item stopped powering on and the seller replaced it immediately! Great customer service!
Amazon Customer –
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.
Luis –
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.regardsLuis
Michael Somar –
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.
LCB –
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…
JS –
Seems to be working
It didn’t detect any combustible gas coming out of furnace vents, which would signal no issues, but it provided readings when I put it in natural gas water heater flue just to test it.
sara_eliza –
my new nickname is sewage sniffer !
this was a blast. used it to test which of my kids had the stinkiest breath (it was the middle child). this incredible device brings the fun to any party.
Akragas –
Mi piace la sensibilità… Un po’ ferragunosa da programmare.. Mancano i gradi Celsius…
Mirel zaldoiu –
Non e cosi tanto buono. Speravo che fosse piu sensibile. Funzionale pero si fa fatica.