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Your cart is empty.The GQ GMC-320-Plus digital Geiger Counter is the latest model developed by GQ Electronics LLC, USA. It has larger internal flash memory to facilitate data processing capability. Portable and convenient with built-in audible and visual signals, it features automatic data recording. It is able to continually monitor the radiation and log the data each second into internal memory. GQ software can download the radiation history data to the computer when connected to a PC, and users are able to analyze those data later. The device uses USB port for communication and power. The internal battery can be charged via wall adapter or car adapter. Using the adapters, continuous data monitoring is possible and no worry about batteries charge or any data loss. The main board has a real time clock for time related data logging purposes. The USB port communicates with GQ Geiger Counter Data Viewer software. For professional data logging, an more advanced version, may be purchased at low cost from GQ
Shelley Neff Design and Photography
Reviewed in the United States on February 22, 2025
Great product, good price point. The portability to take into the field is exactly what I needed. I have an at-home sensory array that it seamlessly connects with allowing me to monitor the data continuously. Would buy again.
Belgian customer
Reviewed in France on February 16, 2025
Le top
Adam C Duclos
Reviewed in the United States on June 23, 2024
This Geiger counter works great and is easy to use. The clicks sound great too. The interface is easy to use, and you can turn the clicks and alarm on and off, have it display as a graph or not, and switch between units. It also arrived fully charged, and after a few weeks the charge indicator is still showing as full.I've always wanted a Geiger counter, but I finally bought this one to test my cat after a radioactive iodine treatment. We brought our cat home as early as possible, and it was both fun an enlightening to watch as our cat easily hit 5000 count at first (and hearing the clicks race), and is now reading at a much lower 50. As radiation can't be detected with normal human senses, it would have been all to easy to forget and let our cat back on our laps too early. As it was, we ended up holding off on normal interactions with our cat for longer than the minimum recommendation.It's also fun to show off. Would buy again.
nicola
Reviewed in Italy on May 9, 2024
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Mike
Reviewed in the United States on February 22, 2024
I ordered this since I have some vintage glassware and wanted to check it all. All tested negative. I held this around some smoke detectors and the counter pinged a little extra so the product does work. Simple to use and like that it comes with a rechargeable lithium battery.
SEBASTIAN
Reviewed in Spain on December 7, 2024
Es un contador Geiger preciso,duro y de muy buena calidad,llegó rápido y sin un rasguñoSin duda vale ese precio
Chash
Reviewed in the United States on December 21, 2024
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technical user
Reviewed in the United States on September 13, 2023
So my more expensive dosimeter has an alpha+b+g/beta+g/gama selector window and thin walled tube, and I don't think this one does, so it doesn't compare in that specific regard.However for measuring background counts this one seems fine. It should be able to detect both gama and beta particles, but I do not have separate alpha/beta/gama sources to confirm.This is a good unit for the price. Like my more expensive unit, this one will probably go into overload if placed near a strong source.
Dean Miller
Reviewed in the United States on March 12, 2023
I bought this for radiation monitoring during RAI (Radioactive Iodine) ablation treatment for thyroid cancer. The calibration was accurate with the device used at the hospital and gave me confidence to be around my young children at the end of the duration. Depending on the dosage (mine was 125 mCi) it may not give an accurate reading or even a reading at all because the chip is overwhelmed by the CPM (counts per minute) but as the treatment progressed and the iodine was processed through my body, I was able to watch the level go down daily.This was a very helpful tool.
Richard Chandler
Reviewed in the United Kingdom on November 30, 2023
Fantastic little unit better to have something than have nothing when it hits the fan..... I will be swopping out the tube for a better one but saying that its not needed but i am a has to be perfect nut.....
Wogga
Reviewed in the United States on March 11, 2022
I ordered this after doing some internet research over a few weeks, checking for used and new units on the usual places. A big selling point is that the maker/seller GC GMC Electronics has good customer support. In my case, I plugged it in for charging and then started making the setup selections (backlight time out etc). While still plugged in to USB charging, I noticed the radiation readings were 0.000 Even after a factory reset (doesn't ruin unit calibration, don't worry) it was still zero. I was ready to return the unit to the seller, when I thought I'd disconnect from USB and try using a bit more. Either it was the USb connection, or maybe that the unit isn't 'ON' for testing when you're in setup mode. In any case, it works fine. Hope I never need it now, except to measure Brazil Nuts and Fiestaware shards! A minor issue, the wrist strap broke immediately. I guess that's better than breaking when I'm using the unit and relying on the strap. I'll probably open the unit and put a stronger wrist strap in eventually and plan on getting a case of some kind. These units use a glass (or maybe two glass) tubes; they are fragile - treat them very lightly! Good little device, great seller.
Charles Lion
Reviewed in Mexico on April 17, 2022
Siempre quice uno, este ofrece buena relación costo-calidad.Si software permite actualizar los datos en internet.
Aaron Murphy
Reviewed in the United States on September 1, 2020
Its nice and light, easy to use, and seems pretty sensitive, although this is the only Geiger counter I've used. It picked up the natural radioactivity of potassium in potash fertilizer from the garden shop. It also identified a small vase as radioactive, when I had no idea it was, that got moved quick, lol. Welding rods and old Vaseline glass statue of a pony registered.It doesn't just blurt out a good estimate, give it a min or so to get a solid reading if it's low level stuff. Hot stuff starts the clicks quit noticibly, tells you it's active, but leave it for a solid reading. Just a min or so. It's got a lot of display modes, that's nice, you can visualize the data however suits you best instead of a one screen fits all readout.I'm really pleased.********************************************6-1-2022 update.I take this thing everywhere, it's still working great! Most days it come to work with me, and every so often I download the history to save as file. It's been dropped a few times, thankfully nothing broke, and the battery may need to be replaced soon ish as I get a day, maybe a day n half usage. This is like 1 year and 9 months down the road with orig batt, not bad at all!Though I own several more expensive counters now, and several with alpha particle capabilities, I still use this all the time. The support team and forum are great for hammering out problems, like using their software or connection issues to GMC map etc.Solid product, still 100% satisfied nearly 2 years later. Thanks GQ!
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