--- product_id: 492194778 title: "GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter" brand: "gq" price: "$225.92" currency: USD in_stock: true reviews_count: 12 category: "Gq" url: https://www.desertcart.us/products/492194778-gq-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger store_origin: US region: United States of America --- # Internal memory with PC data download Long-lasting rechargeable battery 1-second real-time data logging GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter **Brand:** gq **Price:** $225.92 **Availability:** ✅ In Stock ## Summary > ☢️ Stay ahead of invisible risks with precision and style! ## Quick Answers - **What is this?** GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter by gq - **How much does it cost?** $225.92 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/492194778-gq-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger) ## 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 - • **Compact & Ready to Go:** Pre-configured out of the box with a sleek, lightweight design for on-the-move professionals. - • **Power Through Your Day:** Rechargeable lithium-ion battery ensures uninterrupted monitoring. - • **Data at Your Fingertips:** Download and analyze historical radiation data effortlessly with free PC software. - • **Versatile Detection Modes:** Switch between Dosimeter, CPM count, and Graph modes for tailored readings. - • **Instant Radiation Insights:** Real-time data logging every second keeps you ahead of the curve. ## Overview The GQ GMC-300S is a compact, professional-grade digital Geiger counter and radiation dosimeter featuring 1-second real-time data logging, rechargeable lithium-ion battery, and internal memory with PC download capability. It offers multiple detection modes including Dosimeter, CPM count, and Graph mode, making it ideal for precise radiation monitoring in both field and lab environments. ## Description Product Description GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter The GQ GMC-300S digital Geiger counter is the latest general purpose Geiger Counter. It is developed by GQ Electronics LLC, Seattle, WA USA. As an enhanced version, it has higher sensitivity to facilitate a lower level radiation detection. It also has LCD contrast control, front LED indicator, analog data port output, new graphic display, speaker on/off features. It also has unique features, such as, record data first play it back later; open protocol for easy application integration; visualize real-time graph, data logging. 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. When connected to a PC, GQ software can download the radiation history data to the computer and the user is 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. -Measures Various Types of Ionized Radiation: Beta, Gamma, and X-ray Nuclear Radiation -Dosimeter Function -A Lanyard for Drop-proof Protection -Graphic Display: Bar Chart & Line Graph -Rechargeable and Replaceable Battery -Audio or Data Port -Type C Charging Port - Multiple Display Modes Free PC Software and Worldwide GMC Map Our free PC software and GMC Map support the following features: downloading history data from PC, generating radioactive decay graphs, accessing downloaded internal memory data on PC, and retrieving online historical data. Free 3rd party software supports Mac. Review: Works. Produces graphs of activity over time - Works. Interesting how radioactive different bits of land are. Review: Hunting down uranium glass just got more interesting - So I am a enthusiastic uranium glass hunter, the collection only gets bigger all the time.but I will admit I have made a couple of mistakes when I haven’t had a 395 UV torch on me.I had held of buying a Geiger counter as wasn’t very sure what I was looking at to be honest, but came across this one and read all the reviews and they we’re basically very positive.so I purchased one with the next day delivery. Perfect timing delivery wise and even had to give the driver a code so that made it super safe delivery wise. Neatly packaged and the unit itself was bubble wrapped within a sturdy box.no need to do anything on initial use as everything had been set up already including the date and full battery charge.having 82 pieces of uranium glass I was spoilt for choice. I went for a mix of old and modern and unknown to test the variations.I’m impressed. It gave me a basic room radiation reading of about 26cpm, the older Greta vase eventually came up as 119cpm,(I had to move it away from other pieces as the counter is that sensitive it was picking up other items nearby) and the modern one around 31cpm I also have some Vaseline glass which I’ll test later.all in all for the money I think it is great value and a look forward to taking it out and about and using it as well.always helpfully to double check things ## Features - Real-time data logging every second into internal memory. - History data can be downloaded to computer - Rechargeable battery last longer - Free data Viewer PC software - Dosimeter mode, CPM count mode, Graph mode ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B541D433 | | Batteries | 1 Lithium Ion batteries required. (included) | | Batteries Required? | No | | Batteries included? | Yes | | Battery Cell Type | Lithium Ion | | Best Sellers Rank | 15,480 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 45 in Inspection & Analysis 74 in Hazardous Material Handling | | Customer Reviews | 4.6 4.6 out of 5 stars (1,213) | | Date First Available | 14 July 2022 | | Item Package Quantity | 1 | | Item Weight | 222 g | | Item model number | GMC-300S | | Manufacturer | GQ Electronics LLC | | Part number | GMC-300S | | Product Dimensions | 12.07 x 6.99 x 1.91 cm; 222 g | | Voltage | 220 Volts (AC) | ## Images ![GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 1](https://m.media-amazon.com/images/I/615ZNdooHgL.jpg) ![GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 2](https://m.media-amazon.com/images/I/71s+RKgzbZL.jpg) ![GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 3](https://m.media-amazon.com/images/I/71SgzkUJBiL.jpg) ![GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 4](https://m.media-amazon.com/images/I/71eUWWBDstL.jpg) ![GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 5](https://m.media-amazon.com/images/I/71JDqnPZznL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works. Produces graphs of activity over time *by J***H on 7 June 2026* Works. Interesting how radioactive different bits of land are. ### ⭐⭐⭐⭐⭐ Hunting down uranium glass just got more interesting *by A***R on 29 May 2024* So I am a enthusiastic uranium glass hunter, the collection only gets bigger all the time.but I will admit I have made a couple of mistakes when I haven’t had a 395 UV torch on me.I had held of buying a Geiger counter as wasn’t very sure what I was looking at to be honest, but came across this one and read all the reviews and they we’re basically very positive.so I purchased one with the next day delivery. Perfect timing delivery wise and even had to give the driver a code so that made it super safe delivery wise. Neatly packaged and the unit itself was bubble wrapped within a sturdy box.no need to do anything on initial use as everything had been set up already including the date and full battery charge.having 82 pieces of uranium glass I was spoilt for choice. I went for a mix of old and modern and unknown to test the variations.I’m impressed. It gave me a basic room radiation reading of about 26cpm, the older Greta vase eventually came up as 119cpm,(I had to move it away from other pieces as the counter is that sensitive it was picking up other items nearby) and the modern one around 31cpm I also have some Vaseline glass which I’ll test later.all in all for the money I think it is great value and a look forward to taking it out and about and using it as well.always helpfully to double check things ### ⭐⭐⭐⭐⭐ Clear display, measurements vary *by M***. on 15 November 2025* The measurements are varying for background and individual objects but without an old watch (Radium) or an old type smoke detector it's hard to confirm it's efficacy. ## Frequently Bought Together - GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Aquatabs 397mg Water Purification Tablets (100 Pack). Water Filtration System for, Camping, Boating, Emergencies, Survival, RVs, and Marine-Use. Easy to Use Treatment and Disinfection. - HealthFare Potassium Iodide Tablets | 130 mg | 120 Fast-Dissolving Tablets (2 Pack) | Ki Pills | Long Shelf Life | Non-GMO --- ## 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/492194778-gq-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger](https://www.desertcart.us/products/492194778-gq-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-11*