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The GCA-07 Digital Geiger Counter

NRC certifiable* accuracy

--When accuracy matters

Industrial, Medical, and Education.

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Why NRC Certification is important!

digital geiger counter gca-07w

GCA-07W Digital Geiger Counter

         1) Detects environmental radioactivity.
         2) Measures background radiation and above.
         3) Government NRC certified* accurate Digital Geiger counters
         4) 15% Educational Discount.

Radiation and Geiger Counter Specialists and Experts         Images SI Inc. BBB Business Review

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GCA-07 Digital Geiger Counter

GCA-07 Digital Geiger Counter (Internal Sensor)

Detects Alpha, Beta, X-rays and Gamma radiation

Compare GCA-07W and GCA-07

GCA-07W Digital Geiger Counter with Wand (External Sensor)

Detects Alpha, Beta, X-rays and Gamma radiation

Geiger Counter Software
Optional Windows 7 Geiger counting software.

Track and graph your Geiger counter's readings, save data, viewer program, Excel compatible. Requires USB to TTL Serial Cable to interface Geiger counter to software. Read more

High Contrast LCD

High Contrast LCD

Provides CPS/CPM data and its equivalent radiation level

External wand of the GCA-07W

External wand of the GCA-07W

.85" diameter and 5.75" long
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Basic Port
Basic Port

External Power, Head Phone, USB Serial/TTL.

Geiger Counter Power Supply
Power Supply

9VDC / 1A Output

USB to 3.5mm
Optional USB to 3.5mm Cable

The USB TTL Serial cable provides connectivity between USB and serial UART interfaces at 5V. Needed to interface Geiger Counter to Graphing Software Read more

NRC Certification Available
NRC Certification Available

We don't just say our Geiger counters are accurate we can certify it.
Read more

Example Frame

Serving a Mission of Moving Science Forward

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Digital Geiger Counter Technical Data,

Detector Features:

  • NRC Certification

    With NRC certification you have a independent US gov't license laboratory testing and certifying your Geiger counter's accuracy. * NRC certifications are available at additional cost.
  • Radiation Warning Symbol

    Detects and Measures: Alpha, Beta, X-ray and Gamma Radiation

  • audio speaker output

    Audible Speaker Output

    Each radioactive particle detected produces an audible click.
    Speaker audio output may be turned on and off.

    Headphone Jack

    For private listening.
  • simple interface

    Simple User Interface

    Front panel switches provide an intuitive easy-to-use interface for all Geiger counter functions.
  • Configurable Measurement Window

    Selectable Time Modes:
    Counts Per Second (CPS) or Counts Per Minute (CPM).
  • Geiger Graphing Software

    Graphing Software

    Graphing software for the WIN7 operating system is available. Features threshold alarms, CPS or CPM modes. Graphs in lines, bars, 3D lines and 3D bars.
  • Geiger Counter easy to read LCD display

    High Contrast LCD Screen

    Easy to read Count measurements and Equivalent radiation level. Backlight available for low light conditions.

  • Low Battery Indicator

    Low Battery Power Indicator

    * External Power Supply
    (AC adapter) included.

Leading our competitors:

  • Educational Institutions

    Educational Discount

    Schools and educational institutions get a 15% discount. Call for promo code at 1-800-230-4535
  • expert staff staff available to answer questions

    Expert Staff

    We can answer any questions you may have.

  • free online interactive tutorials

    Software Tutorials

    Online Radiation detection and monitoring interactive tutorials see more...
  • Best Value Geiger Counter

    Value Product

    Certifiable accurate radiation detection and measurement instrument.
Buy from

Try Before You Buy - Rentals

Images SI Inc., is a U.S. based company that manufactures and assembles in the United States.
* NRC Certification is available from an independent U.S. Government licensed laboratory at an additional cost.

Risk Free Money Back Guarantee!

If our Geiger counter doesn't meet your needs, let us know within 30 days and we will issue a UPS Merchandise Return Label, (domestic USA only) for a no hassle refund.
      Returns must be in new and unused condition.

GCA-07 - $449.95 

Digital Geiger Counter

GCA-07W - $509.95 

Digital Geiger Counter with Wand

Additional Options

Belt Clip Add $10.00
NRC Certification Add $125.00