FNIRSI Geiger Counter Nuclear Radiation Detector - Radiation Dosimeter With Lcd Display, Portable Handheld Beta Gamma X-Ray Rechargeable Radiation Monitor Meter, 5 Dosage Units Switched,0.0 Sv-500Msv

Works effectively as a radiation detector. Have used to check in house and surrounding areas around home and office. Helps keep peace of mind. Low battery consumption.

Easy to use

Beach sand can contain natural radioactivity from naturally occurring radioactive materials (NORMs) like uranium (238U), thorium (232Th), and potassium (40K). These materials can come from metamorphic and magmatic rocks that break down over time through weathering and erosion to form beach sand. The concentration of these materials can vary, and sands with smaller grains tend to have higher levels of activity

Working very poor

Not a good product and start beeping for no reason

Very very bad product.. Not working properly..

What was claimed is not provided, instead something else was there which is lower quality. See for yourself.

No way to tell if it's accurate. But the radiation levels do change over time. So far the radiation levels are low.

I bought this partly for curiosity, and partly to do some testing for my son's nuclear energy science fair project. I had a fancy one of these a while back, and never really saw much happen on the screen other than normal background radiation and a small jump when held up to a highway rock cut. This unit was a much better value, has a cool graph display, and we were thrilled upon taking it with us on a tour of a nuclear power facility. They had a hunk of uranium ore on display, and the unit jumped up to about 320 CPM, as opposed to the normal 15-30 we had been seeing everywhere else. Pretty cool to see, and very exciting for my son. Winner!

Works. As soon as I turned it on it started measuring background radiation in the 0.02 to 0.11 uSv/h. But I couldn’t really tell if it was working or not or just measuring some kind of noise. So I drove to work and back home and walked around at work but nothing triggered a higher reading. So I took it to a lab where they have Cobalt 60 readily available for radiation testing and just walking into the outside room behind the multiple feet of lead and concrete my meter went from 0.01 to 1.0uSV/h in just a few seconds. The little red light at the top wasn’t flashing anymore, it was solid red. So I knew that meant it was measuring the radiation and it was tripping an alarm to let me know I was way over the 1uSv/h alarm limit. That was good enough for me. On another note, the menu system is a little kludgy and you cannot save a screenshot or any history which is kinda disappointing, but for a quick measurement for on the spot radiation testing, I would say it does what it promises. I. Just wish it would connect to my phone through Bluetooth so I can download the data to save for later.

Very effective. My cat underwent radioactive iodine treatment, and I needed to protect myself. It's accurate and quick to detect. All my cat had to do was walk by or stand for any period of time. period of time.

Excellent device. Hope I never need it. 🙏🏽