GQ GMC300Eplus Fulfill Digital Geiger Counter NULCEAR Radiation Detector Monitor Meter Dosimeter Beta Gamma X-ray Datalogger Recorder Real-time monitoring, private home use All purpose, wall charger

Long battery life and measured background radiation matches expectation for my geographic area. The data storage capability is quite useful as well. I have not tested this device using calibrated beta, gamma and X-ray sources, but I suspect that the performance would be pretty good. Note that these types of detectors generally do not measure alpha or neutron radiation. I purchased this device for testing for residual radiation in building materials and antique plate glaze and I am very satisfied.

Got this at the right price to check whether any of the watches I’ll be working on have radium in the lume. The model has been updated since some of the reviews I read, it now has a USB-C socket for charging and connectivity. I did a quick check when I received the Geiger counter by waving it over a few watches and, sure enough, it could tell the difference between modern lume and that nasty radium stuff. It is quite configurable and just so you know - the GM tube is at the top of the unit, above the display, not to the right where the nuclear emblem is…

The build quality is good and it works really well

I dislike there is no app for the phone it have no Bluetooth No waterproof instructions a joke , NO ESTANDARD USB PORT. I LIKE a lot features in one device , battery life is very good even in negative degrees -5⁰ Tested, tube inside can be change but you have to know what are you doing , can be set in the wall it come measure guide For 79£ I can't ask for more Other device will charge you twice I forgot my favourite feature is power saving but if you put headphones you can hear they device working clicks Is comes Recomend yo buy more advance device to keep standby when this one detect too much radiation . Life expectancy for this devices is 2+ years in heavy use but as I said you can change de tube sensor soo this device can be use for much longer also put ptlrotection to waterproof it but only will measure gamma like that actually measures better and gamma no alpha but I'm not 100% sure they don't provide this info.

works as expected. you don't get A measurement at this price range of course, but this is not much different to the GMC500 plus really, it reads and graphs pretty much the same without useless features like wifi etc.

Walked around my town for an hour and a half in the evening accumulating about 20 millisieverts; delighted to know I don't live in Fallout and will be in the know if Putin or Xi go full Strangelove on us.

I bought it to check residual radiation in irritated stones. I was also interested in the background radiation in my stone built house. It sounds the alarm when I put an old gas mantle near it. Easy to use .

You could spend way more and not be getting much more for your money. This does what it should and could one day save your life if things went really wrong.

Lo recomiendo va muy bien y tiene muchas opciones gracias

Parfait et facile d'utilisation.

Super Duper quality, go for it

This is my first ever geiger counter. And i am SO happy with it, it’s amazing quality, feels, and operated professionally, and the different modes and all the individual settings make it amazing. I absolutely recommend this!

Mein Katze bekam eine Radio-Jod-Behandlung, und ich konnte die Werte der Klinik mit dem Gerät gut nachvollziehen. Mit dem Zähler kann ich zu Hause checken, wie viel Reststrahlung in welchem Abstand in Katze und Hinterlassenschaften noch vorhanden ist. Der Zerfall von Jod 131 erzeugt Beta- und Gammastrahlung, die das Gerät erfasst, in guter Übereinstimmung mit den Messungen der Klinik. Man kann durch eine Reihe von nützliche Display-Optionen durchklicken und eine Menge Optionen einstellen wie z.B. Schwellwerte für Alarme. Das Gerät wird per USB Mini (nicht Micro)-Buchse geladen. Der Akku hält, selbst mit Display-Beleuchtung, leicht mehr als einen Tag Dauerbetrieb. Über USB gibt es auch eine serielle Schnittstelle (Protokoll ist offengelegt), mit der z.B. das gute Python-Programm (dadurch ist das Betriebssystem egal) "geigerlog" zusammenarbeitet. Ich lese damit den Speicher aus und logge live mit. Man ḱann damit auch Datum und Zeit setzen. Wie andere schon schrieben driftet das Gerät pro Tag schon mal 15-30sec. Alpha-Strahlung wird, wie beworben, NICHT erfasst, so dass meine Uranglas-Dose keine Reaktion erzeugt - dafür sind (teurere) Sensoren mit Alpha-Fenster erforderlich. Wenn ich Rezensionen lesen, dass das Gerät in Tschernobyl/ Pripjat gute Dienste geleistet hat, dann hoffe ich, dass den Rezensenten klar war, dass sie dafür das falsche Gerät dabei hatten, weil es die dort relevante gefährlichste Strahlung gar nicht registriert.