Reference only — this item is no longer available. This product has been discontinued and cannot be ordered. We keep the page online so the specifications and documentation stay available to anyone still running the equipment. Current replacements are listed further down.

Discontinued

Geiger Counter (USB-RAD121) with Cable & Radgraph Software

Reference only — not for sale

Model	USB-RAD121
Manufacturer	Magnii
Category	EMF Gauss Meters
Status	Discontinued

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Product details (archived)

The information below is retained for reference only. This item is discontinued and cannot be ordered.

USB Powered Geiger Counter (USB-RAD121) with Cable & Radgraph Software

The USB-RAD121 is a radiation detector that runs completely off your computer's USB port. The device features a classic geiger counter click and light pulse for every count registered, while radiation levels are displayed on the computer. The simple RadGraph software interface displays and graphs readings over time, and even allows the readings to be streamed to a personal webpage. Make sure your home or office is safe from radiation by monitoring it with the USB-RAD121 Geiger counter!

Specifications:

Accuracy: ±10% Typical, ±15% Max (Co60)
Measures: BETA and GAMMA Radiation
Uses a high-quality American-made geiger tube
Range 0-50 mR/hr
Anti-Saturation: 500 mR/hr Minimum
Sensitivity: 450 cpm/mR/hr, dead-time compensated
Unit of Measurement: mR/hr, μR/hr, μSv/hr, CPM (compensated or uncompensated)
LED Flashes with each count
Buzzer beeps with each count (can be disabled in software)
Detector Window: 30 mg/cm2 x .002” thick
Interface: Computer, USB Type B (Cable Included)
Power: Port-Powered from USB Port
Unit Weight (without cable): 1.6 oz
Unit Dimensions: 4.00" x 1.25" x 1.00"
Connects to PC with USB Type A to Type B Cable (included)
Software Interface: RadGraph or RadMeter (both downloads included with purchase)
2 Year Warranty
Made in the USA
HS Tariff Number for International Orders: 9030.10.00

Note: The USB-RAD121 is a calibrated geiger counter, designed for general purpose use and should not be used in safety-critical applications.

Download Users Manual (PDF format)

Yes, we even provide you with a C++ code example and class for reading the USB-RAD121 geiger counter! The class allows you to connect to the device, take readings, convert your readings to mR/hr, and enable/disable the sound on the device. The library provided runs on Windows, but it is possible to get the code to run on MacOS X or Linux as well.