---
product_id: 679119062
title: "GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter"
brand: "gq"
price: "R3312"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Gq"
url: https://www.desertcart.co.za/products/679119062-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger-counter
store_origin: ZA
region: South Africa
---

# Internal memory with downloadable history Long-lasting lithium-ion battery Real-time data logging every second GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter

**Brand:** gq
**Price:** R3312
**Availability:** ✅ In Stock

## Summary

> ☢️ Stay ahead of the invisible—measure, monitor, and master radiation safety like a pro!

## Quick Answers

- **What is this?** GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter by gq
- **How much does it cost?** R3312 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/679119062-gmc-300s-digital-nuclear-radiation-detector-monitor-meter-geiger-counter)

## 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

- • **Power That Keeps Up:** Equipped with a rechargeable lithium-ion battery designed for extended field use without interruptions.
- • **Seamless Data Access:** Download detailed radiation history directly to your PC with free viewer software—perfect for analysis and reporting.
- • **Instant Radiation Insights:** Monitors and logs radiation levels every second for up-to-the-moment safety awareness.
- • **Versatile Monitoring Modes:** Switch effortlessly between Dosimeter, CPM Count, and Graph modes to suit your professional needs.
- • **Open Communication Protocol:** Integrate and customize with ease thanks to an open communication protocol, empowering advanced users.

## Overview

The GQ GMC-300S is a lightweight, professional-grade digital Geiger counter and dosimeter that delivers real-time radiation monitoring with second-by-second data logging. Featuring multiple modes, downloadable history via free PC software, and a long-lasting lithium-ion battery, it’s designed for precise, reliable radiation detection and analysis in any environment.

## Description

The GQ gmc-300S digital Geiger counter is the latest general purpose Geiger Counter. It is developed by GQ Electronics LLC, USA. As an enhanced version of GMC-300E Plus, 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. This product can be used for industrial, commercial or Test equipment, such as universities, laboratories, environment evaluation measurement, hospital research, scientific analytical applications, antique evaluation, building material testing research and so on. comparing to other brand products, the most prominent advantages of this product are: having most features and cost effective. 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. 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.

Review: Fonctionne bien mieux que les produits chinois ! Très satisfait
Review: Exactly as described and well worth the price. I've tested this against some known elements in my collection and the counter works well. The interface is intuitive and easy to navigate to change various settings and customize the display. I chose this as an economical option that would still allow me to have audible and visual queues. The ability to view the data (including as a graph) and export it is appreciated, as is having a quick tool for the standard conversions and equivalent metrics of Sieverts, Rads, CPM and dose etc. Would also note the battery came charged and has held up well for hours now. I look forward to taking this on my upcoming trips to the odd mineral shop or planned conventions. Don't look at other cheaper options on desertcart from xyz brands and vendors... This product has the quality you are really looking for.

## Features

- Real-Time Data Logging Every Second Into Internal Memory.
- History Data Can Be Downloaded to Computer
- Deposite Battery Last Longer
- Free Data Viewer PC Software
- Dosimeter Mode, CPM Count Mode, Graph Mode
- Open Communication Protocol

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GQ Electronics LLC |
| Part number | GMC-300S |
| Item Weight | 222 g |
| Product Dimensions | 12.07 x 6.99 x 1.91 cm; 222 g |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Item model number | GMC-300S |
| Voltage | 220 Volts (AC) |
| Item Package Quantity | 1 |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Lithium Ion |

## Images

![GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter - Image 1](https://m.media-amazon.com/images/I/615ZNdooHgL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***E on 8 April 2025*

Fonctionne bien mieux que les produits chinois ! Très satisfait

### ⭐⭐⭐⭐⭐ Review
*by S***M on 18 February 2025*

Exactly as described and well worth the price. I've tested this against some known elements in my collection and the counter works well. The interface is intuitive and easy to navigate to change various settings and customize the display. I chose this as an economical option that would still allow me to have audible and visual queues. The ability to view the data (including as a graph) and export it is appreciated, as is having a quick tool for the standard conversions and equivalent metrics of Sieverts, Rads, CPM and dose etc. Would also note the battery came charged and has held up well for hours now. I look forward to taking this on my upcoming trips to the odd mineral shop or planned conventions. Don't look at other cheaper options on Amazon from xyz brands and vendors... This product has the quality you are really looking for.

### ⭐⭐⭐⭐⭐ Review
*by J***E on 26 February 2025*

The GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter has proven to be an invaluable tool in my watch servicing hobby. I use it specifically for checking if watch dials contain radium, and it performs this task with remarkable accuracy. The digital display is easy to read, and the device is user-friendly, making it simple to operate even for those new to radiation detection. Its sensitivity and reliability provide peace of mind when working with vintage watches. This Geiger counter is a must-have for anyone needing precise radium detection at a great value.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-18*