Nuclear Radiation Detector, Geiger Counter with Click Sound for Beta Gamma X-ray, Portable Alarm Radioactive Dosimeter for Uranium Glass Iodine Treatment Water Food, FS-600

Good Value, seems to work as expected.

Full disclaimer: I got this to experiment around with. I have no way of determining how accurate or fast it is at the moment. It reads between .12 - .16 uSv/h on my desk typically. According to the web, the background radiation in Dallas is roughly .06 uSv/h. I don't know if something in my vicinity is causing it to read higher or if it's not accurate. That said, it feels solidly constructed and the display is both readable and can be backlit. You can use it either as a real time Geiger counter or a longer term dosimeter. It's pretty straightforward to use but like I said, I cannot comment on its accuracy at the moment.

There isn't enough room for me to give a class on surviving nuclear fallout, but having this instrument would enable your survival if you've done your homework and taken some logical 'Prepper' steps. We face nuclear threats in the form of WWIII from multiple sources...some making nuclear threats while actively engaged in war.Can you survive a nuclear attack? it's possible, but ONLY if you've prepared and learned how. Fallout radiation will be persistent and lethal for at least 48 hours after it starts, but it can be MITIGATED enough to save yourself and your family.

This is a great cheap geiger counter. My test with a test radiation card shows a consistant 0.3uSv compared to a 0-0.20 uSv back ground count.The curve logging is a bit questionable in that it just shows a spike about every 60 seconds for about 20 seconds ... maybe a low level near limit of detection. I would also get random 0.3uSv spike abut 1time per hour ... maybe wifi or BT RF noise from phone. You can hear ticks with the sound on ... so you could still detect high level in real time. The back light is nice ... but it has to be turned on in menu every power cycle. Current draw is about 20mA and 25mA with backlight ... giving 40 to 50 hrs of usage on the AAA batteries. There is also a USB C power port for continous operations. 120 CPM = 1uSv = 0.1mRad. Radiation sickness evedently starts at about 150,000uSV and 50% death rate at about 4,000,000uSV (4Sv). Keep in mind exposure is about time ... so a high momentary exposure is not so bad, but continous exposure over hrs/days/years tend to be much worse.

This detector is very clear and easy to use. The vendor was even considerate enough to include a small Phillips screw driver, for the compartment, when you need to change batteries. And, it updates, quite efficiently, in real-time (you will notice the changes, within the space, and as you go to different areas or rooms). I just started using this, but I'm already pleased. I know this isn't the most accurate--there are more expensive and precise detectors, particularly for industrial use--on the market. But, this is perfect for home use, and for those who want to begin gaining awareness of the radiation levels around them.

Geiger Counter Nuclear Radiation Detector, Professional High Accuracy Radioactive Detector Meter Beta Gamma X Ray Data Tester Marble Dosimeter (White)Bought this for my survival gear hope I never need to use it. Great product arrived in great condition no issues would recommend.

This Geiger counter is qualified as an awareness device that can tell the existence of the radiation, but the accuracy and response time is not as good as a professional-grade Geiger counter. I have access to certified Geiger counters with routine maintenance. The reading from this device is at least 20% off of the accurate readings with a very slow response. It is okay for home use but the readings are not good for measurement purposes.

Comes with USB c charging port and 3 aaa NON RECHARGABLE batteries