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

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 collect various rocks as a hobby. I once took this to the abandoned uranium mine and it promptly alerted me with a radiation level much higher than what is considered to be safe and typical background level. I also did a nuclear bone scan at a hospital and I just took this with me just to see what happens. This device alerted me with a rapid burst of static sound to warn me of the presence of radiation, especially on my arm after the technetium-99m isotope was injected into a vein. Bone scan is a relatively low radiation procedure and the half life of this isotope is very short (6 hours).

I've worked in a facility that handles waste products that all have some level of radioactive contamination, so I am well familiar with Geiger counters. It appears to work well with a degree of accuracy. The manual is easy to understand and the functionality of the instrument and basic setup was straightforward. I like the fact that it has a built-in rechargeable battery, and a full charge will give several hours of operation. Hopefully, I will never absolutely need to use it, but in these times it was quite inexpensive and offers much mental comfort.

Worked good . Kind of slow but so far I’m happy with its performance

This is a good device and easy to use. Purchased for medical use. I think it’s worth the price. Looks really cool and easy to pack in a purse or back pack. Comes with a little card with the information on levels of radiation. It was in stock And arrived the next day.

Very fragile. Dont drop it. On my second. Works well.

Seems to work great. Hope I never have to use it for real.

I purchased this to confirm my radiation exposure from a family member receiving a radiological treatment. It definitely detects radiation danger. It’s inexpensive, and easy to setup and read. I basically use it confirm if there are no household items or surfaces (especially in the bathrooms) that are contaminated with unacceptable radioactive exposure.

Fonctionne bien mieux que les produits chinois ! Très satisfait

The GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter has proven to be an invaluable tool in my watch servicing hobby. I use it specifically for checking if watch dials contain radium, and it performs this task with remarkable accuracy. The digital display is easy to read, and the device is user-friendly, making it simple to operate even for those new to radiation detection. Its sensitivity and reliability provide peace of mind when working with vintage watches. This Geiger counter is a must-have for anyone needing precise radium detection at a great value.

Funciona correctamente

Sehr gut, sehr empfindlich. Reagiert deutlich auf Uranglas.

Funziona, fortunatamente oltre ad esposizioni intenzionali non suona non ho un altro come metro di paragone