Geiger-2 Dosimeter / Geiger Counter / Radiation Detector

  • Able to detect gamma radiation as low as 0.1 megaelectron volts for pinpoint accurate readings
  • Pocket-friendly design is discreet and compact, perfect for everyday carry
  • Easy to use with just a two-button operation


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In an era where invisible threats lurk in the most unexpected places, the digital  Geiger -2 Portable Dosimeter / Geiger Counter emerges as an essential companion for those committed to safeguarding their health.

This sleek, pocket-sized marvel harnesses the same military-grade technology trusted by professionals, yet it's simple enough for anyone to use. Whether you're navigating daily urban environments or preparing for potential nuclear emergencies, the Geiger-2 ensures you’re always aware of your radiation exposure.

With its precise measurements, full-color LCD display, and robust, rechargeable battery bolstered by an integrated solar panel, this device provides peace of mind and a proactive stance against the unseen dangers of radiation. Embrace a new level of vigilance with the Geiger-2, because knowing your environment is the first step to protecting yourself and your loved ones. 


Key Features of the Geiger-2 Portable Dosimeter / Geiger Counter


  • Has the same SBM20-01 Geiger Muller tube as professional-grade Geiger counters
  • Simple two-button operation is easy enough for a child to use but as accurate as professional-grade equipment
  • Full-color digital 1.1 inch LCD display provides key information at a glance
  • Detects radiation levels as low as 0.999 μSv/h
  • Operates with a count rate of counts per second with an output every 20 seconds
  • Simple enough for a child to use but as accurate as professional-grade equipment
  • Fully digital device has various modes to track ambient radiation and long-term statistics and allows you to set customizable daily exposure limits with alarms
  • USB-C rechargeable 400 mAh, 3.7 V, LiPo battery
  • Integrated solar panel to boost charge during daylight hours
  • Operational in temperatures as low as 51℉ (10.5℃) 
  • Comes with a keychain, USB-C cable, and carabiner
  • Compact, pocket-friendly design is discreet, durable, and perfect for EDC 

Technical Specifications

We’re exposed to background radiation every day of our lives. While some exposure to radiation is natural, higher concentrations can be the result of poorly shielded electronic equipment, X-rays, CT scans, or even air travel.

Beyond the substantial threat of nuclear meltdowns, disasters, and fallout, this excess background radiation can add up over the years and contribute to serious health issues. 

Fortunately, there’s now a practical solution you can take everywhere to monitor and measure your exposure—the MIRA Safety Geiger-2 Portable Dosimeter/ Geiger Counter.

Only slightly larger than a ballpoint pen, but sensitive enough to detect the Geiger-2 is a full-featured handheld dosimeter that offers the same reliability as a professional-grade Geiger counter at a fraction of the price and without the bulk. It’s built from impact-resistant polymer and has an easy-to-read LCD screen with two buttons, making it one of the simplest and most user-friendly dosimeters on the market today. 

Unlike traditional analog Geiger counters, the Geiger-2 is fully digital and has various extremely useful features and modes. Customizable settings for exposure tolerances and long-term reading tracking provide unrivaled clarity and customizability for various situations. Power management features can be used to optimize battery life and manage the included solar panel.

Best of all, the Geiger-2 tucks easily into a pocket, purse, or backpack, so it’s always ready when you need it—providing a potentially life-saving tool that makes you more aware of your environment and ready to face a range of twenty-first century threats. The first step toward protecting yourself from background radiation is identifying it with a reliable radiation meter.

The Geiger-2 is powered by an internal rechargeable LiPo battery with a 30-day extended battery life. Recharging takes just two hours.

NOTE: The integrated solar panel provides a supplemental trickle charge. It will extend the battery's 30-day charge when exposed to direct sunlight, but the Geiger-2 will still require regular recharging via the included charging cable.

Only use indirect sunlight to charge the device.

It’s a perfect addition for bug-out bags and disaster prep, as it’s compact, reliable, and durable.

So, grab a Geiger-2 Portable Dosimeter / Geiger Counter and learn more about your environment today!


Answers to your questions about the MIRA Safety handheld radiation detector


What is a Geiger Counter?

Created by Hans Geiger, a traditional Geiger counter, also known as a Geiger-Mueller (GM) tube, is used for radiation detection. Some of its specific detection included alpha particles, beta particles, ionizing radiation, and nuclear radiation. It's used as a handheld radiation tool for detecting and measuring the low level radiation and its background levels. 

What should I look for when buying a Geiger counter?

When buying a Geiger counter, consider factors such as sensitivity to different types of radiation (alpha, beta, gamma rays), the presence of an LCD display, battery life, portability, and whether it provides audible alarms for radioactive detection. Ensure it meets your specific needs for radioactivity monitoring and safety. Other qualities to consider when searching for a Geiger counter radiation monitor include:

  • A portable Geiger 
  • The counts per minute or per second
  • Voltage 
  • Instrument sensitivity
  • Detection of alpha and beta particles
  • Detection of gamma and x-rays
  • Ion and electron detection
  • Radiation source detection 

What is the difference between a Geiger counter and a dosimeter?

A Geiger counter is used for detecting and measuring radiation levels, while a dosimeter measures the accumulated radiation dose over time. Both are essential tools for monitoring radiation exposure, but a dosimeter is more focused on long-term radiation dose tracking.

Why is a Geiger counter also called a radiation meter?

A Geiger counter is called a radiation meter because it measures the intensity of ionizing radiation, often displayed as CPM or CPS. It provides real-time data on radiation levels, making it an effective tool for radiation detection and monitoring.

Can a Geiger counter detect x-ray radiation?

Yes, a Geiger counter can detect x-ray radiation, along with gamma radiation. It is commonly used in medical and industrial settings to monitor x-ray exposure and ensure safety standards are met.

What is the function of the Geiger-Mueller tube in a Geiger counter?

The Geiger-Mueller tube is the core component of a Geiger counter. It contains a gas that ionizes when exposed to radiation, producing an electrical pulse that the device counts. This process enables the detection and measurement of ionizing radiation.

What are common uses for a Geiger counter?

Geiger counters are used in various fields, including nuclear power plants, medical facilities, environmental monitoring, and by individuals for personal radiation safety. They are essential for detecting contamination and ensuring safe radiation levels in normal background settings.


Ask a Question
  • Can you track exposures over time

    The Geiger-2 is a fully digital device that has various modes to track ambient radiation and long-term statistics and allows you to set customizable daily exposure limits with alarms.

  • Is this a one time or single use portable dosimeter? Or can the Geiger-2 be continually used, month after month? Thanks in advance.

    Unlike traditional analog Geiger counters, the Geiger-2 is fully digital with various extremely useful features and modes. Customizable settings for exposure tolerances and long-term tracking of readings provide unrivaled clarity and customizability for various situations. Power management features can be used to optimize battery life and manage the included solar panel.

  • What is the maximum amount of radiation level the unit can detect/read?

    The Geiger-2 Dosimeter is capable of detecting radiation levels up to 999 μSv/hr.

  • Will this be able to detect radiation levels in water? I believe the previous one was able to so am hoping this one will be at least as good as the old one was.

    Yes, so long as the radiation is within the measurable quantity, it should be detectable by the Geiger-2.


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United States United States

Decent for the price.

Purchased mine in early 2023. The GOOD: I like that it functions as a dosimeter (uSv) for every day use or an active counter (CPM) when you are in a super sketchy zone (this thing WILL let you know to leave). The solar function can keep this thing alive for months, while in active use. I hang it off my plate carrier/chest rig. The geiger-2 is meant for the LONG haul. For when things are going to be bad for weeks or months even. Have dropped mine many times, landed on it from diving to cover. The usb seal is fine in the rain. Been using and abusing it for over a year, it's still kicking. The BAD: This model is not for a "bug out bag". Like stated earlier, this is meant for "the real deal". Keep a cheap geiger for instant read in a "bug out", this is meant to keep you safe in a total SHTF situation. I say this because the battery will die in a couple months in storage, unless you put it near a window or use it regularly. They really should have a model that uses replaceable rechargable batteries. You CANNOT use a quick/smart GAN type C charger, doesnt draw enough power to trip on a smart charger. Use the slower USB type A to C for charging it. Keep that in mind for your portable charger packs. The instructions are wrong in a couple spots. I purchased mine over a year ago, they could have changed the instructions. You change screens left or right using the (O) or (>) buttons. Long press (>) to enter that screens settings. Long press (O) to return to top menu screen. To turn on/off flashlight, at the main monitor screen, you ONLY hold the arrow button (>) NOT both like instructions say. To use as a "regular" movie style geiger counter. Go to last menu, press and hold (>), then press and hold (>) again to change uSv to CPM. Press and hold (O) button to return to front menus. Change screen time out on the power monitor menu by long pressing (>), you change length by long pressing (>). To power down, you hold (O) for 3 seconds, not 5. Holding for longer than 3 seconds just restarts the dosimeter.

Teissier P.
France France


Pratique, d'une utilisation facile et bien fait, cet appareil est bien ce que je veux. Avec un copain on l'a testé sur nous : il est plus radioactif que moi. Je suis content. A part ça maintenant je connais le rayonnement naturel à la maison.

Michael SVG verified by SHOP
United States United States

Initially got a bad unit cosmetically but MIRA allowed me to return it for a replacement. I’m satisfied with the new unit and would recommend this company without reservation!

Rick SVG verified by SHOP
United States United States

Well made.

Jordan SVG verified by SHOP
United States United States

Work great, screen is bright, read manual to learn controls. Nice and rugged.