Geiger Counter Nuclear Radiation Detector,CHNADKS Upgraded d Personal Dosimeter,Beta Gamma X-ray Portable Handheld Radiation Monitor,Battery Powered (0.08uSv – 50mSv)

I recently acquired the CHNADKS Upgraded Personal Dosimeter, and I must say, this device has exceeded my expectations in every way possible.Accuracy and Sensitivity: The first thing that stands out is its high level of accuracy. With a detection range from 0.08uSv to 50mSv, this Geiger counter provides reliable readings for both low and high radiation environments. Its sensitivity to beta, gamma, and X-rays ensures comprehensive monitoring, which is crucial for personal safety. I tested it against known radiation sources, and the readings were consistent with what you'd expect, proving its reliability.Portability and Design: The compact, pen-like design with a clip is incredibly practical for on-the-go use. It's light enough to carry around without feeling like an extra burden but robust enough to endure outdoor conditions. The OLED screen is clear, even in low light, making it easy to read the radiation levels at a glance. Its battery life is impressive, offering up to 50 hours of standby time, which is perfect for extended monitoring sessions.User-Friendly Interface: The interface is intuitive; even if you're not well-versed in radiation detection, you'll find it easy to navigate. Setting the alarm thresholds or switching between units is straightforward, and the device responds quickly to changes in radiation levels, ensuring you're always aware of your surroundings.Alarm Features: The sound and flash alarm modes are highly effective. When the radiation levels exceed your preset threshold, the device alerts you promptly, allowing for immediate action if necessary. This feature is not only useful for personal safety but also for educational or professional purposes where quick responses are needed.Value for Money: Considering its features and performance, this dosimeter from CHNADKS is an excellent investment. It's perfect for both hobbyists interested in radiation detection and professionals needing a reliable tool for radiation monitoring in various scenarios, from home use to fieldwork.In summary, this Geiger Counter from CHNADKS is a top-quality, user-friendly, and highly portable device that I would recommend without hesitation to anyone looking to monitor radiation safely and effectively. It's a must-have for those concerned about radiation exposure or those in industries where such monitoring is crucial.

Small size is great. Would be a better rating if it had a simple way to download the data and did not lose all the data when that battery dies.

I have a Geiger counter I built from kit. Cost me $60 back a few years ago. I came across this pen dosimeter while window shopping radiocode 120. Wow. It's based on the Russian SBM-20M Geiger Tube that's been around for a few years. Thin walled to be more sensitive to hard beta. Green light blinks on detected events. I'm getting about 16 green blinks per minute inside giving 0.11uSv/h. Outside It picked up on my 6 gram Uraninite crystal from 2 feet in 6 seconds, then at 1 foot in 3 more seconds - red blinky and Alarm is surprisingly loud - you would easily hear it in a car or outside with a bit of wind (got a 2.59uSv/h) . Played some yesterday, reset overnight, started 6am and ran all day today. 9 hours and has 2 of 3 bars. Tomorrow I'm going to strap it to my DJI drone in view of the camera and try "find" my rock. (you know you want one now - need a rock too). The tube is located behind the display so sensitive forward/left/right when clipped inside a pocket. It's accurate and quick as a SBM-20M tube can be. It didn't really notice a banana, 30 seconds on top a smoke detector got 0.92uSv/h. So how'd I do today? 9 hours 20 minutes, MAX: 2.59uSv/h, Dose: 0.81uSv (of my aliquant of 1000uSv/year), AVR: 0.09uSv/h.My intended use? I live 90 miles east of DC.This is truly a jewel for the price.THREE days later - Wow! Took it on a day trip to the beach. Who Knew - Atlantic beaches are slightly radioactive .63uSv. It ran 24 hours. It can be recharged in 35 minutes and without reset. my thoughts are a daily reset as the MAX is most important when out exploring.1 second press on the power and then 1 second press menu - removes the lock icon and adds menu items for adjusting alarm settings. I didn't adjust but wanted to know how. What do the alarms settings indicate? So I checked out "day tour of Chernobyl". Seems like a perfect fit.This unit sensitivity 0.08uSv - 999uSv24 hour total dose home 1.59uSvMy rock at 6" 2.59uSvControl room unit 3 13.5uSvOne day tour Chernobyl 100uSvThis dosimeter would be perfect for the task and the tour would probably be safe - like bungee jumping.For every day use the alarms settings are fine. End of the World - I'd bump the DOSE Alarm up to 3000 and reset daily.Don't put it in pant's pocket - safer in shirt pocket, neck of shirt. Squirrel, Labrador, and dosimeter don't mix.Overall, it's held up to outings, I can read it without glasses (+1.75) barely, I understand my range of exposure in a safe normal environment and will be my go to dosimeter. Really. Vs my old '70 vintage CD V-742. Absolutely.Final update - I am wrong re: SBM-20M tube. my bad.

I got about 30 of these for a course that I am teaching. I tested them all and compared them to each other and they are all fairly consistent.There are however some annoying problems. For example, when you change the thresholds for alarm very often they get reset to default values when you turn the device on and off.I found that if you repeat the process multiple times by saving those again and again and again, they eventually get set and get saved. This is the only reason why I didn't give it five stars.