GQGMC300Eplus 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

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.

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.

Great little itemWorks

The media could not be loaded. I dislike there is no app for the phone it have no BluetoothNo 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 -5⁰Tested, tube inside can be change but you have to know what are you doing , can be set in the wall it come measure guideFor 79£ I can't ask for more Other device will charge you twiceI forgot my favourite feature is power saving but if you put headphones you can hear they device working clicksIs comesRecomend 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.

The media could not be loaded. The build quality is good and it works really well

I teach radioactive transport by road and use this to explain that for the average radiation transport worker they are better off inside their van than outside in the sunshine. Also fun to show them what doesn't give off ionising radiation that they thought did.

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.