--- product_id: 50546809 title: "GMC-500+ (Plus) Geiger Counter Nuclear Radiation Detector Monitor Beta Gamma X-Ray Dosimeter" brand: "gq" price: "$408.80" currency: USD in_stock: true reviews_count: 13 category: "Gq" url: https://www.desertcart.us/products/50546809-gmc-500-plus-geiger-counter-nuclear-radiation-detector-monitor-beta store_origin: US region: United States of America --- # WiFi-enabled unlimited server data logging Dual Geiger tubes for Beta, Gamma & X-ray detection Rechargeable lithium-ion battery with long life GMC-500+ (Plus) Geiger Counter Nuclear Radiation Detector Monitor Beta Gamma X-Ray Dosimeter **Brand:** gq **Price:** $408.80 **Availability:** ✅ In Stock ## Summary > ⚡ Stay ahead of invisible threats with the ultimate radiation watchdog! ## Quick Answers - **What is this?** GMC-500+ (Plus) Geiger Counter Nuclear Radiation Detector Monitor Beta Gamma X-Ray Dosimeter by gq - **How much does it cost?** $408.80 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/50546809-gmc-500-plus-geiger-counter-nuclear-radiation-detector-monitor-beta) ## Best For - gq enthusiasts ## Why This Product - Trusted gq brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Portable Powerhouse:** Lightweight, compact design with rechargeable battery keeps you protected on the go without interruption. - • **Seamless Integration:** Open protocol and free PC software enable effortless data analysis and sharing within your professional network. - • **User-Centric Display:** Large, auto-rotating LCD with adjustable backlight ensures crystal-clear readings anytime, anywhere. - • **Limitless Data Tracking:** Built-in flash memory plus WiFi auto-upload means your radiation data is always backed up and accessible worldwide. - • **Precision Radiation Sensing:** Dual Geiger tubes deliver ultra-sensitive Beta, Gamma, and X-ray detection for real-time safety monitoring. ## Overview The GQ GMC-500+ is a cutting-edge portable Geiger counter designed for professionals and enthusiasts alike. Featuring dual Geiger tubes, it detects Beta, Gamma, and X-ray radiation with a detection range 10x higher than previous models. Its large, auto-rotating LCD display offers real-time, easy-to-read data, while onboard flash memory and WiFi connectivity provide unlimited cloud data logging and remote monitoring. Powered by a rechargeable lithium-ion battery, this compact device is perfect for continuous environmental monitoring, personal dosimetry, and scientific applications, backed by multilingual online support and free data analysis software. ## Description Product Description New model from GQ Electronics LLC, Seattle, USA This GQ GMC-500+ Geiger counter is a portable nuclear radiation detector. It detects Beta, Gamma, X-ray radiation and can be used as continuous radiation monitor or used as a personal dosimeter to track the radiation received. Nuclear radiation is invisible but threatening to human health, environmental safety. For example, if receive 100 mSv radiation, the risk to fatal health disease increases. This meter detects and visualizes the radiation in real time, give you a peace of mind. It can record the historical data for future analysis. The thoughtful design provides easy-to-use basic features as well as advanced features for users want to explore more Key Features Stand Alone Detection Mode Only need ready-to-go main unit Carry the main unit and detect the potential radiation around you any time Can be used as personal accumulative dosimeter (user time reset able) Continuous Monitoring Mode Use with PC to continuously monitor the radiation anywhere, any time frame The main unit is designed to place, hang, hold anywhere Seattle, WA service center Online support forum community Phone & email support from Seattle Basic Features Fast reading in seconds after turn on Accurate & real-time data Display CPM,uSv/h, mR/h in one screen Real time Recording Data record first, playback later Real time clock LED Visual & Audio Alert Large Text,Text,Graphic Display Main Unit Build Small 5 x 3 x1 Light & portable Two Geiger sensors Rechargeable battery Large LCD Graphic UI Adjustable Back lit Advanced CPU on-board Build-in internal flash memory Build-in WiFi module On-board speaker & Gyroscope Versatile Data Acquisition Advance Features Independent calibration factors Bar & line graph USB data port Data logging Submit data to any server in the world automatically Open Protocol Data Viewer Software Converts Data to Universal Format PC GMC data viewer software is included free for downloading the history data. And the data can be saved as standard .CSV format file. WiFi Data Logging to server for sharing the data Open Protocol for easy integration to other application system WiFi data logging to GMCmap server with free unlimited data storage. iPhone APP provide easy access to data iPhone APP facilitated use with cellphone Specification Radiation Detection: Beta, Gamma and X-Ray . Detection Dose Range: 0 ~ 42500uSv/h Detection CPM Range: 0 ~ 982980 CPM Detectable Energy Range: 0.1~3.0 MeV Own Background: 0.2 Pulses/s Working Voltage: 3.2-4.0V LCD Display: Dot matrix with back light Working power: 0.045W - 0.2W Power: 3.6V/3.7V battery / USB power Applications This unit can be used to detect/monitor/measure low dose background environment either indoor or outdoor. Alert you once big incident happens: like dirty bomb, Fukushima, Chernobyl. Nuke plant environment radioactive plume like Fukushima Space radiation, air industrial and on airplane. Real-time testing evaluation and scientific testing on samples Fruit and imported food radiation testing The GMC-500 Plus can detect the radiation if the fruit has been radioactive contaminated. Carry the unit with you to test air, food, water and personal environment Radioiodine (I -131) Therapy The GMC-500 Plus can be used to monitor the radiation level during the treatment and keep the family member at the safe distance. It can be used to monitor if any one is under I-131 treatment around you. Use the GMC-500 Plus for Hospital Radiation Therapy Monitoring & Radio iodine Treatment Monitoring Lab research, oil field, and material testing Stone collection, marble counter-top, building material and antique collection Real-time testing evaluation, scientific testing on samples Measuring on Antique radiation level like Vintage Fiesta Dinning Ware and others Review: Worried about Nuclear Radiation or just a hobby this is perfect - I bought this partly out of scientific curiosity (I'm a geologist) and its probably one of those essentials in these uncertain times. Where I live has a very long history of mineralisation and extraction (Devon/Cornwall UK) and I often go out on and around the moors picking up rocks and the like that look interesting (to my eye!) and so I do like to check for radiation particularly as Uranium and Radium does exist here and there. It was mined not far from me until the 1930s and I would love to find some minerals (probably NOT one of the smartest ideas I've had). Anyway this little device fits the bill perfectly, it measures Gamma and Beta radiation using two Geiger Muller tubes. It does not detect Alpha probably because the glass surrounding the tubes would block it, you've also got to be really close, like millimetres from an Alpha source to ge a reading. Its very easy to use and has a host of functions for displaying the live and historical count. The batteries which are USB rechargeable seem to last an age as well. The unit comes with its own soft carry case that fits on your belt as well as a useful credit card radiation hazard guide. The unit is a little bit smaller than your average smartphone. Although its probably not suitable for the job I do like to scan around the house occasionally. Our house has 3 ft thick granite walls in places and is susceptible to Radon build up. We do have a Radon extraction unit working 24/7 in case you're wondering. Radon itself is an Alpha emitter so the unit is not much good for that but Radon does rapidly decay in to daughter Isoptopes some of which are detectible via Beta radiation. Its currently clicking away on my desk at an average of 22 counts per min or 1.7 uSv/hour if you prefer which is normal and ok. So yes its a really worthwhile purchase if you're interested in Radiation in the environment or just plain curious. Review: Amazing Product! - Measuring Radiation is complicated to understand, at least for me. All I want to know is if the levels are safe or not. This very well thought out & uncomplicated product tells you exactly that. Short press of power button illuminates the screen while showing the power remaining in the replaceable battery. Long press turns it on. Charging is via supplied usb cable but no plug supplied, im using a usb mains charger plug that charges my phone. The screen rotates as you turn it so it can be set on its side or bottom. The backlit screen is dimmable with time out, brightness and contrast & you can set the screen to off or constant on. If the screen times out (depending on settings) then moving the detector will make the back light come on. The display is nice and easy to read with black font against what looks to me like a very pale blue white light. Its not too cluttered with info either. Its also a dose meter & has a food setting. Dont know how long the battery lasts but I have used it with the back light on for around 5 hours and its still got 80% left. It clicks and a green light flashes, you can turn these off, im really impressed with this, its so well thought out. I also bought the GQ EMF-390 for measuring Electro Magnetic Fields. Same design and user interface & screen as the Radiation meter, meaning you dont have to learn 2 devices. Fantastic products which l highly recommend & I think are a good price too. ## Features - Enhanced model, dual geiger tubes sensor, independent calibration factors - Push the detection range upper limit 10 times higher - Large informative LCD Display with auto horizontal and vertical large font display - Built-in flash memory. Onboard speaker and audio output,Rechargeable battery installed. - With unlimited server logging data storage. Submit data to any server in the world automatically - Product online user manual guide available in English, German, French ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071JWB7TJ | | Batteries | 1 Lithium Metal batteries required. (included) | | Batteries Required? | Yes | | Batteries included? | Yes | | Battery Cell Type | Lithium Ion | | Best Sellers Rank | 43,952 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 141 in Inspection & Analysis 193 in Hazardous Material Handling 1,981 in Scanners & Testers | | Customer Reviews | 4.6 4.6 out of 5 stars (1,816) | | Date First Available | 15 Sept. 2017 | | Included components | Nuclear Radiation Detector Monitor Dosimeter | | Item Package Quantity | 1 | | Item Weight | 49.9 g | | Item model number | GMC-500Plus | | Manufacturer | GQ Electronics LLC | | Part number | GMC-500Plus | | Product Dimensions | 12.7 x 7.62 x 2.54 cm; 49.9 g | ## Images ![GMC-500+ (Plus) Geiger Counter Nuclear Radiation Detector Monitor Beta Gamma X-Ray Dosimeter - Image 1](https://m.media-amazon.com/images/I/51tds47DVSL.jpg) ## Questions & Answers **Q: Will i be sent gmc-500+ v2? is a "+" visible on the logo on the front?** A: This is a GMC-500+ V2. The frond logo label is "GMC-500+". **Q: what app does this use** A: I have this myself and im not aware of an app for it. unless its a remote monitoring thing? **Q: Does this device measure temperature? I know the 320+ has a temperature view.** A: No. It has no temperature sensor. **Q: Why do you want this** A: Well,it does a,fair spectrum. Alpha,bete etc , so i can determin by variase filter what radiation, ok in trueth since 1986 when Chernobyl ran wild i was sat with my family on the beach Dawlish Devon a,bit later early summer, on the radio they warned a,cloud of fall out was passing south of england,going east west in a,band,,across west country/ south wales in the evening back in the,caravan my wife children myself had hundreds of watery blisters small but memory fails me,,how we,dressed the blisters i know,we showered and,showered and a week or so later home was above a,1000 feet and notices prevent people selling or slaughtering sheep milk was,a no no aswell ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worried about Nuclear Radiation or just a hobby this is perfect *by T***0 on 24 November 2025* I bought this partly out of scientific curiosity (I'm a geologist) and its probably one of those essentials in these uncertain times. Where I live has a very long history of mineralisation and extraction (Devon/Cornwall UK) and I often go out on and around the moors picking up rocks and the like that look interesting (to my eye!) and so I do like to check for radiation particularly as Uranium and Radium does exist here and there. It was mined not far from me until the 1930s and I would love to find some minerals (probably NOT one of the smartest ideas I've had). Anyway this little device fits the bill perfectly, it measures Gamma and Beta radiation using two Geiger Muller tubes. It does not detect Alpha probably because the glass surrounding the tubes would block it, you've also got to be really close, like millimetres from an Alpha source to ge a reading. Its very easy to use and has a host of functions for displaying the live and historical count. The batteries which are USB rechargeable seem to last an age as well. The unit comes with its own soft carry case that fits on your belt as well as a useful credit card radiation hazard guide. The unit is a little bit smaller than your average smartphone. Although its probably not suitable for the job I do like to scan around the house occasionally. Our house has 3 ft thick granite walls in places and is susceptible to Radon build up. We do have a Radon extraction unit working 24/7 in case you're wondering. Radon itself is an Alpha emitter so the unit is not much good for that but Radon does rapidly decay in to daughter Isoptopes some of which are detectible via Beta radiation. Its currently clicking away on my desk at an average of 22 counts per min or 1.7 uSv/hour if you prefer which is normal and ok. So yes its a really worthwhile purchase if you're interested in Radiation in the environment or just plain curious. ### ⭐⭐⭐⭐⭐ Amazing Product! *by P***L on 20 April 2021* Measuring Radiation is complicated to understand, at least for me. All I want to know is if the levels are safe or not. This very well thought out & uncomplicated product tells you exactly that. Short press of power button illuminates the screen while showing the power remaining in the replaceable battery. Long press turns it on. Charging is via supplied usb cable but no plug supplied, im using a usb mains charger plug that charges my phone. The screen rotates as you turn it so it can be set on its side or bottom. The backlit screen is dimmable with time out, brightness and contrast & you can set the screen to off or constant on. If the screen times out (depending on settings) then moving the detector will make the back light come on. The display is nice and easy to read with black font against what looks to me like a very pale blue white light. Its not too cluttered with info either. Its also a dose meter & has a food setting. Dont know how long the battery lasts but I have used it with the back light on for around 5 hours and its still got 80% left. It clicks and a green light flashes, you can turn these off, im really impressed with this, its so well thought out. I also bought the GQ EMF-390 for measuring Electro Magnetic Fields. Same design and user interface & screen as the Radiation meter, meaning you dont have to learn 2 devices. Fantastic products which l highly recommend & I think are a good price too. ### ⭐⭐⭐⭐ An outstanding Geiger counter for an equally outstanding price. *by G***H on 1 January 2022* This Geiger counter is probably the best value on the market right now. You'll easily pay double for an uncalibrated Soviet model from the seventies, or three times the amount I paid for this model for a US-made CDV-700 or similar. What I'm saying is - this is very good value. This Geiger counter has some features that I really like, namely: 1. The ability to charge it over USB. Instead of faffing around with D-cells or hunting for AA batteries from TV remotes, it uses an internal Lithium-Ion battery that charges over the USB port. I haven't run the battery down yet, but I have been using it on and off and the battery has stayed pretty constant. I have no doubt that it'll last a good amount of time, especially if being used with a laptop or computer. 2. The dual tubes. Instead of using a single Geiger-Muller tube, it uses two. This means that it can detect low-level radiation with a good amount of accuracy, as well as being able to detect higher levels of radiation that you'd probably hope to never encounter. This counter reads the check source from my CDV-700 brilliantly, showing roughly 1150 counts-per-minute. It's decently accurate, especially for the price - though don't expect 100% accurate Alpha emitter measurements, this is strictly a beta and gamma unit - though it lacks a Beta shield, so you'll have to come up with your own material to block gamma rays for purely gamma measuring. 3. Data logging over USB. This was a big draw for me - the ability to plug it in to my laptop over USB and have live reporting to a CSV database is outstanding. I can display the current level of radiation on a graph, right on my laptop display, without hassle. You can also sync it up to a live world map and let other people view the radiation in your area if you like - though you don't have to. A star is knocked off here because the WiFi connectivity is a pain to set up, and logging over WiFi was equally confusing. Not a massive dealbreaker, but be aware. There is a great forum run by users of this counter and other GQ products, so asking there is a good bet if you get stuck. 4. Display clarity - the display on this device is outstanding. The days of having to guess where the needle is sitting on an analog geiger counter, or fumble with an LCD display that disappears in dim light are gone. The display is fully backlit, and you can set it to display measurements in a numbers only format, or on a graph. It refreshes enough to get nice accurate results, and this combined with the classic click-click-click of the counter makes this a very fun, tactile unit to use. 5. Portability - this item is absolutely -perfect- for taking out and about. It includes a nice durable pouch with a belt clip, and the unit is only really the size of one of those Casio calculators that many of us used in our GCSEs. It weighs next to nothing, but don't let that fool you into thinking it's flimsy - it's durable enough to be used out in the field, though I'd probably not drop it or abuse it as much as I might with, say, a CDV-700 or similar military/civil defence unit. The speakers are built in, and a 3.5mm jack allows the usage of headphones with the unit - no hassle, no fuss, no carting around a speaker. Overall, if you're looking for a Geiger counter to monitor radiation levels around where you live, hunt for radioactive rocks, test radioactive watches or military dials, or see why the mysterious object the cat dragged in is glowing, this is a perfect item for you. I just can't believe it's as cheap as it is! ## Frequently Bought Together - GQ GMC-500Plus Geiger Counter Nuclear Radiation Detector Monitor Dosimeter, White - WERJIA Hard Carrying Case Compatible with GQ GMC-500Plus/EMF-390/GMC-600Plus Radiation Detector - U.S. Armed Forces Nuclear, Biological And Chemical Survival Manual --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/50546809-gmc-500-plus-geiger-counter-nuclear-radiation-detector-monitor-beta](https://www.desertcart.us/products/50546809-gmc-500-plus-geiger-counter-nuclear-radiation-detector-monitor-beta) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-07*