--- product_id: 465960452 title: "GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray" brand: "gq" price: "FREE" currency: TND in_stock: false url: https://www.desertcart.tn/products/465960452-gq-gmc-300e-geiger-counter-nuclear-radiation-detector-data-recorder store_origin: TN region: Tunisia --- # USB connectivity for seamless PC integration Real-time data logging every second High-capacity rechargeable battery GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray **Brand:** gq **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > ⚡ Stay ahead of invisible threats with the GQ GMC-300E — your personal radiation watchdog! ## Quick Answers - **What is this?** GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray by gq - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/465960452-gq-gmc-300e-geiger-counter-nuclear-radiation-detector-data-recorder) ## 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 - • **User-Friendly Interface:** Large dot matrix LCD with backlight and graphic/text modes for clear, intuitive radiation readings anytime, anywhere. - • **Instant Radiation Alerts:** Audible and visual signals keep you instantly informed of radiation levels, ensuring safety without guesswork. - • **Continuous Data Recording:** Automatically logs radiation data every second with a built-in real-time clock for precise monitoring history. - • **Plug & Play PC Integration:** USB connection pairs with free downloadable software that mirrors the device interface for effortless data analysis and export. - • **Versatile Detection Spectrum:** Detects Beta, Gamma, and X-ray radiation with sensitivity from 0.1 to 1 MeV, covering a broad range of nuclear threats. ## Overview The GQ GMC-300E Plus is a compact, portable Geiger counter designed for professional-grade detection of Beta, Gamma, and X-ray radiation. Featuring real-time audible and visual alerts, continuous second-by-second data logging with a built-in clock, and USB connectivity for seamless PC data transfer, it empowers users to monitor and analyze radiation levels with precision. Its rechargeable battery and intuitive LCD display make it ideal for both indoor and outdoor environments, ensuring you never miss a critical radiation event. ## Description The GQ GMC-300E Plus digital Geiger Muller Counter is designed to be a portable and convenient device. The device comes with built in audible and visual signals for the level of radiation detected. It can be used for radiation detection and monitoring both indoor and outdoor, as well as in other similar environments. It features automatic data recording. It can continually monitor the radiation and log the data each second into internal memory. When connected to a PC, software can download the radiation history data to the computer and the user is able to analyze those data later. The GQ GMC-300 Soft Geiger Counter software’s appearance is an exact copy of the GMC-300 hardware human interface. You can download it for free and experience the GMC-300 user interface before you purchase the real hardware. The GQ GMC-300 installed a high capacity rechargeable battery. With power adapter, the battery can be charged while the data continually monitored. The main board also has a real-time clock for all time related data log. The USB port communicates with GQ soft Geiger counter software and the history data viewer software. The GQ soft Geiger counter software is an exact copy of the GMC-300. You can download it for free and experience the GMC-300 before you get it. Specification: Radiation detection: Beta and Gamma . Sensitivity to Gamma Radiation: 0.1~1 MeV Own Background: 0,2 Pulses/s Working Temperature Range: -50 +60 ｧｳ Working Voltage: 9V rechargeable battery LCD Display: Dot matrix with back light Working power: 0.045W - 0.2W Power: 3.7V battery / USB power The following CPM is measured by GMC-300: Background 20~40 Public park granite table 50~83 Uranium glass bead 238U 320 Uranium ore 238U 2905 Standard 5uCi source 26500 For demo software download ,technical support, please visit our support forum og GQ Electronics LLC website We ACCEPT RETURN for REFUND if you are NOT SATISFIED. ## Features - Newer GMC300EPlus Fulfill of gmc-300 series geiger counter for nuclear radiation - Text, graphic and large font mode provide visualized radiation changes - Usb connection for both communication and data communication - Package weight of the Product: 6 Ounces ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00IN8TJYY | | Item model number | GQ 300 E Plus | | Manufacturer | GQ Electronics | | Product Dimensions | 12.7 x 7.11 x 2.54 cm; 170.1 g | ## Images ![GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - Image 1](https://m.media-amazon.com/images/I/61kfFcpTHdL.jpg) ![GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - Image 2](https://m.media-amazon.com/images/I/41XuebM+L0L.jpg) ![GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - Image 3](https://m.media-amazon.com/images/I/413QAwZAswL.jpg) ![GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - Image 4](https://m.media-amazon.com/images/I/41yH7I6WDlL.jpg) ![GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - Image 5](https://m.media-amazon.com/images/I/41HVEeweD-L.jpg) ## Questions & Answers **Q: Would this device be able to tell if there was leftover radiation from a nuclear blast or contamination? Or radiation from dirty bombs?** A: The GMC 320 Plus's upper range limit is 32 millirem per hour. (A millirem is 1/1000th of a rem). According to the scientists at the Oak Ridge National Laboratory, a Facility of the U.S. Department of Energy, in their 1987 "Nuclear War Survival Skills", small doses of around 6 rem per day should "produce no incapacitating symptoms. The human body usually can repair almost all radiation damage if the daily doses are not too large." They go on to say, "Instruments that measure only milliroentgen-range dose rates are sold for war use by some companies. Since most Americans have no idea what size of radiation doses would incapacitate or kill them, and do not even know that a milliroentgen is 1/1000 of a roentgen, some people buy instruments that are capable of measuring maximum dose rates of only one roentgen or less per hour." (One roentgen is equivalent to one rem.) The book further says that a meter that "can measure one roentgen (rem) per hour is far too low to be of much use in a nuclear war." **Q: I'm a novice wanting to check for radiation levels. Is this device easy to understand? What can I use this for to measure for radiation?** A: The GMC-300 is easy to use and low priced as an entry level radiation detector. I use mine to monitor background levels of radiation as I have yet to find an highly active source. Here in central BC, Canada I get 14 to 22 cpm, with a high of 30 cpm. It appears to decrease after a rain fall. The only thing missing with the GMC-300 is a radiation standard but I can understand why. **Q: Will this measure the radiation level present in gemstones?** A: Not all gemstones emit high enough levels of radiation that can be discerned above ambient levels of radiation and it depends on the actual level of radiation the stone emits. Stones that have been exposed to radiation to change their color will probably not register. I have some uranium marbles that are not detected by this counter. My wife was subjected to a PET scan, last year and read 790 CPM from a distance of 6 feet. **Q: can I use this to measure Fukushima radiation in seafood?** A: I've read articles regarding radiation in seafood indicating the levels you read may be may be misleading. The GMC-300 will measure this radiation. Here in Northern Indiana the ambient level is normally 30 - 40 CPM. As shown in the video, levels in sea life can be higher. http://www.opb.org/news/article/scientists-say-stop-worrying-about-fukushima-radio/ Rick ## Frequently Bought Together - GQ GMC-300E Geiger Counter Nuclear Radiation Detector Data Recorder Beta Gamma X-ray - WERJIA Hard Carrying Case for GQ GMC300 Plus/GMC-320 Plus Radiation Detector - Potassium Iodide Radiation Tablets 130 mg (2 Pack) - (280 Tablets) EXP 10/2032 - Potassium Iodine Pills YODO Naciente, Anti Nuclear Fallout Pills --- ## 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.tn/products/465960452-gq-gmc-300e-geiger-counter-nuclear-radiation-detector-data-recorder](https://www.desertcart.tn/products/465960452-gq-gmc-300e-geiger-counter-nuclear-radiation-detector-data-recorder) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*