GQ GMC-800 Geiger Counter Handheld Radiation Detector — Large Color LCD, Dosimeter & 5 Alarms (Black)

The GQ GMC-800 is a handheld Geiger counter that detects beta, gamma and X‑ray radiation with a large color display, configurable alarms and long-term data logging.

Designed from a U.S. engineering lineage and built to national calibration standards, the GMC-800 combines instant spot measurements, time‑based monitoring and personal dosimetry in a single portable device. It reads radiation levels the moment you power it on, stores calibrated records for later review, and offers multiple alarm types so users with different needs can respond quickly. The interface is crafted for fast learning with a bright TFT color screen, selectable color schemes and tactile controls for indoor and outdoor use.

How does the GMC-800 show radiation readings and what units does it use?

The device displays real-time radiation counts and dose rates directly on a large color LCD, with a one-press shortcut to toggle among four main screens. It supports common dosimetry and count units so you can interpret immediate flux or accumulated exposure depending on the mode you choose.

• Real-time counts per second (CPS) and dose rate views
• Dosimeter mode showing instantaneous and cumulative dose
• User-selectable unit schemes for regional or application preferences
• Readable outdoors with adjustable light/dark display themes

What alarms and accessibility features are provided?

The GMC-800 includes five alarm options—visual LED, sound, vibration and voice—so it notifies a wide range of users including those with hearing or vision limitations. Alarm thresholds are configurable, allowing you to set warning levels appropriate to your environment or task.

• LED, audio, vibration and voice alerts for flexible notification
• Customizable alarm thresholds for low to high sensitivity needs
• Large-font and graphic display modes for quick recognition
• Vibration and voice options support vision‑impaired users

What monitoring and data capabilities does it offer?

The GMC-800 can operate as a spot detector, a continuous monitor and a personal dosimeter with data logging for years of records. It stores data locally for long-term review and supports Type‑C data transfer for processing, firmware updates and online sharing through open protocols.

• Real-time monitoring and timeframe measurement modes
• Dosimeter with accumulated exposure tracking for personal safety
• Internal memory suitable for long-term storage and history preview
• Type‑C charging/data port, plus free PC software and firmware updates

How accurate and durable is the GMC-800 for field use?

Built to meet national calibration standards and factory-calibrated for improved accuracy, the GMC-800 is designed to deliver reliable readings in practical conditions. Its lightweight construction, anti-drop design and flexible placement options make it convenient for handheld inspections or stationing on surfaces for continuous monitoring.

• Calibrated to relevant U.S. national standards for measurement integrity
• Rechargeable, replaceable battery with Type‑C charging cable
• Light, thin housing with drop-resistant design and multiple stands
• Fast startup and one-button navigation to reduce user errors

Who this is for: The GQ GMC-800 is aimed at professionals and informed consumers who need a versatile, accurate radiation detector—field technicians, environmental surveyors, industrial safety personnel, educators running demonstrations, and privacy-conscious homeowners who want reliable spot checks or continuous monitoring. It suits users who require clear visual feedback, configurable alarms for different abilities, and long-term data storage with simple data export options.