GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter

Great basic Geiger counter. Only change I would make is for counting mode of come-up when external power is applied, not the charging progress. I like to have various meters in my car and don't like turning them on everytime. If you see one of the $10 cheap import meters, just bite the bullet and get this instead.

I got this because I always wanted a geiger counter, for no specific reason. It really works well it's rechargeable it's compact and you can read different settings from it. I took it to the dentist and it didn't really register any radiation. When the dental Tech pointed the little x-ray gun at it it went a little nuts.

Works as advertised! Great tool to check for radiation on Big Ben wind up clocks with radium dials.

4 stars because it takes a long time for the CPM to go up. Wish it was more instantaneous.

I got this to monitor the radiation during and after my RAI therapy. For the most part, it seems accurate. The first 24 hrs of my RAI, the radiation from my neck area was off the charts. It was interesting to see but also scary. I used it as a way to determine the distance to keep myself far enough during isolation. As the radiation decays, the distance you radiate becomes less too. I also used it to monitor the radiation from my pillow. I have a favorite pillow and the neck area was still high in radiation. It took about a month and a half for the radiation to come back down to normal levels. Even the pillow cover was still high in radiation too. Having this tool really helped ease my worries about radiation and affecting those around me. It was well worth it. Hopefully I don't have to go thru that again. For those that do go thru something like RAI, this tool is helpful and I wish you a speedy recovery.

Exactly as described and well worth the price. I've tested this against some known elements in my collection and the counter works well. The interface is intuitive and easy to navigate to change various settings and customize the display.I chose this as an economical option that would still allow me to have audible and visual queues. The ability to view the data (including as a graph) and export it is appreciated, as is having a quick tool for the standard conversions and equivalent metrics of Sieverts, Rads, CPM and dose etc.Would also note the battery came charged and has held up well for hours now. I look forward to taking this on my upcoming trips to the odd mineral shop or planned conventions.Don't look at other cheaper options on Amazon from xyz brands and vendors... This product has the quality you are really looking for.

I suggest any item this company sells. I really like the GQ GMC-300S i bought. I did notice its like 1/2 the price now from when i bought it. lol so buy it up. But i have had it a year ish and have used it many times and i have left it on to mess with people too. The old fashioned clicking sound. Normal background will move a notch or two and when it does it is a click like a old school Geiger counter. People will often be like what is that noise but my point is, i still have not had to charge the battery. I just did for the 1st time but it was no where near low. I have left it on many times too and it shuts off but not for a while.Its a bit old fashioned looking but it is also a high quality tool and i really like the nostalgic look. Does not functions like a nostalgic counter but like a nice modern one!!5 star product at a affordable price.

works really well,