Smart Geiger for Smartphone


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FTLab Smart Geiger is a subminiature sensor which can detect radioactivity easily and conveniently by connecting to the 3.5 mm earphone jack of a smartphone.
It indicates radiation coming out from a radioactive substance in dose-rate figure (µSv/h) using a semiconductor sensor.
The measurement error is approx. 30%. Therefore, you may leave the exact measurement of radiation dose to an expert, and you can carry out preliminary simple measurement by inserting Smart Geiger into the smartphone.



  • Measuring radiation: Nuclear Gamma, X-ray

  • Measuring range: 0.1 - 200 μSv/h

  • Measurement error: <±30%

  • Sensor type: Semiconductor Sensor

  • Sensor size: 10 mm (body), 3.5 mm (plug), 30mm, (incl. earphone jack : 47mm)

  • Sensor weight: 6g

  • Case type: Al (Aluminum)

  • User interface; Smart phone 3.5 mm, 4 poles earphone jack

  • Linearity: 97% at 20-120 μSv/h

  • Operating Temperature: 10℃ -40℃

  • Smartphone OS: IOS (iPhone, iPad) or Android


  • Detect and Counter "Nuclear Gamma", "X-Ray" by Semiconductor sensor.

  • Smartphone App "Smart Geiger" in Apple App Store or Google Play Store

  • Real-time display of measurement results using Smartphone App "Smart Geiger"

  • Ultra Compact Design & Ultra Low Power

  • Use 3.5 m earphone jack of a smartphone

Delivery Includes:

  • 1 x Smart Geiger

  • 1 x Instructions