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GCA-07W Professional Digital Geiger Counter

- NRC Certification Ready- 0.001 mR/hr Resolution -- 1000 mR/hr Range

NRC certifiable* accuracy

--When accuracy matters

Industrial, Medical, and Education.

Why NRC Certification is important!

digital geiger counter gca-07w

GCA-07W Digital Geiger Counter

Only NRC Certified Geiger Counters
Give Proven Accurate and Reliable Measurements

Not all Geiger Counters are the same.

Many manufacturers are happy to compete on price, none of them want to compete with us on quality or accuracy.

Why? Because our Digital Geiger Counters are NRC ready to be “NRC Certified” – To be NRC certified our Geiger counters are sent to an independent United States Government licensed nuclear laboratory, where it tested against the strict guidelines and standards of the U.S. Nuclear Regulatory Commission.

NRC Certification tells you the Geiger counter is as accurate as “accurate” can be! With an NRC-certified Geiger counter, your radiation reading reports are authoritative and acceptable to governmental agencies. NRC has an additional charge, see NRC option in buy box below, and adds two weeks to the delivery.


NRC CERTIFICATION READY - NRC certification can only be given by U.S. Government licensed laboratory. The NRC certificate certifies that the radiation reading from the Geiger counter is accurate.
DETECTOR SENSITIVITY: Detects Alpha particles above 3 MeV in energy. GM tube has a thin mica window that allows alpha radiation to be detected. Beta radiation above 50 KeV; X-Ray and Gamma radiation above 7 KeV
COUNTING RESOLUTION AND RANGE: 1 Count Per Minute (CPM) - 10000 Counts Per Second (CPS)
RADIATION RESOLUTION AND RANGE: 0.001 mR/hr resolution / 1000 mR/hr Range (Imperial measurements); 0.01 uSv/hr resolution - 10 mSv/hr range (Metric)

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

Frequently Ask Questions >> FAQ Page

Compare GCA-07W and GCA-07

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

Detects Alpha, Beta, X-rays and Gamma radiation

Compare GCA-07W and GCA-07

GCA-07WS Digital Geiger Counter with Wand (External Sensor) and Slide Switches

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
Read more

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

Digital Geiger Counter Technical Data,

Detector Features:

  • NRC Certification Icon

    NRC Certification

    NRC certification from a independent US gov't license testing laboratory *additional cost applies.
  • Radiation Warning Symbol

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

  • audio speaker output

    Audible Speaker Output

    Speaker output may be turned on and off.

    Headphone Jack

    For private listening.
  • simple interface

    Simple User Interface

    Intuitive front panel switches provides easy access to all Geiger counter functions.
  • Configurable Measurement Window

    Select Imperial or Metric Radiation Measurements
    Select Time Period; Counts Per Second (CPS) or Counts Per Minute (CPM).
  • Geiger Graphing Software

    Free Radiation Graphing Software

  • Geiger Counter easy to read LCD display

    High Contrast LCD Screen

    Provides easily readable measurments.
    Selectable backlight for low light conditions.

  • Low Battery Indicator

    Power 9V Battery

    Low Battery Indicator

    * Includes External Power Supply (AC wall adapter).

Leading in Value

  • Educational Institutions

    Educational Discount

    Schools and educational institutions get a 10% discount.
    Call 1-800-230-4535 for promo code
  • 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.

Free Lite Geiger Graphing Software

Try Before You Buy - Rentals

Images SI Inc., is a U.S. based company that manufactures and assembles in the United States.

Free Shipping is only available for shipping within the contiguous USA. All other orders will have prevailing shipping cost added to order.

30 Day Risk Free Money Back Guarantee!

If our Geiger counter doesn't meet your needs, let us know within 30 days and we will issue an RMA for a no hassle return.
      Returns must be in new and unused condition.

Free Shipping (Domestic USA Only) 

GCA-07W - Regular Price $495.95 
SALE PRICE - $339.95 

Digital Geiger Counter with Wand (External Sensor)

Additional Options

Slide Switches Add $20.00
Belt Clip Add $10.00
NRC Cert + 2 Weeks to Delivery Add $125.00

Links to Additional Options
International AC Adapter for Images Geiger Counters

Pelican Case for Images Geiger Counters

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