PRM-7000 Geiger Counter


(2 reviews) Write a Review
2.00 LBS


PRM-7000 Handheld Beta, Gamma, X-Ray Geiger Counter and Nuclear Radiation Monitor

The compellingly priced PRM-7000 provides essential nuclear radiation awareness during a nuclear accident, incident or emergency.

The PRM-7000 is built upon the same long battery life, high quality, made in the US, platform as the PRM-8000 and PRM-9000, which have been the choice of governments, organizations and individuals around the world.

The main difference is that the PRM-7000 is built around a Beta/Gamma tube, without a thin mica end Alpha window, offering greater ruggedness, including against rupture at high altitude.  This Beta/Gamma tube is also less expensive, placing the PRM-7000 into a very affordable price range.  The 7000 is still sensitive enough to detect background radiation, at the rate of about 6 to 8 CPM.

The instrument is designed to similar specifications as devices used by firefighters, HAZMAT teams, paramedics and  other first responders to address the radiation hazards they face.  Unlike other instruments in this price range, the PRM-7000 can be calibrated to the official international standards of accuracy required for regulatory work. 

Mazur Instruments uses only genuine detector tubes, made in the US, by LND in all of its products and does not rely on imported, cloned or “knock-off” detector tubes present in some lower priced products.

Accurate, reliable, made in the USA, the PRM-7000 Geiger counter is an ideal solution for individuals, health physics professionals, educators, researchers, outdoor enthusiasts and rock collectors.

The instrument is designed to continuously collect measurements and statistics enabling complete environment assessment.  This vital capability is not available on similarly priced products.

Using only one key, users can scroll through several screens that display present, average, maximum and minimum measurements in uR/hr, mR/hr, uSv/hr, Counts per Second (CPS) or Counts per Minute (CPM).

This nuclear detector not only records the maximum radiation measured, but also displays the time and date at which the maximum reading occurred. Conventional Geiger counters require the user to be looking at the radiation meter to capture such events.

Supports English and Japanese

The two-line, alphanumeric display supports both English and Japanese languages promoting ease-of-use and concise measurement. The display is backlit to support low-light conditions.

Industry Leading Battery Life

The battery life of this radiation detector and monitor is over 6-years under normal conditions from a single, readily available, 9-volt lithium battery that is user-installable without soldering.

The supplied standard alkaline 9-volt batteries, available virtually everywhere, provide over 3-years of life under normal conditions.

Data Logging and USB Connectivity

With over 100K bytes of internal data logging memory included, this Geiger counter can autonomously (without the need for a PC) store up to 91,466 minutes or hours of time-stamped measurements.  These measurements can then be uploaded later to a PC in CSV format for analysis.

A user-settable dose rate alarm sounds an audible alert when the measured radiation level exceeds that of the alarm level setting.

Designed by Mazur Instruments and manufactured in the USA, the PRM-7000 Geiger counter and nuclear radiation monitor includes abundant I/O options including support for headphones, external speakers, external power and USB data exchange (Requires Optional 3.5mm to USB Adapter Cable).prmcase.jpg  Review Specifications below.

The price below includes the Carrying Case shown at right (cable optional).


This item typically ships within 1 business day.


Click here to go to Software accessories for the PRM-7000.  Click here for available Accessories.


PRM-7000 General Purpose Geiger Counter

Battery Life1  
Standard 9V Lithium 60,000 Hours / 6.85 Years
Standard 9V Alkaline 28,250 Hours / 3.22 Years (included)
           Measurement Front End  
Detector LND 713 Geiger-Muller tube, Halogen-quenched Thin Wall Beta-Gamma Detector (Made in The USA)
Radiation Detected beta, gamma and x-radiation
Energy Sensitivity beta / gamma / X-rays: min 35 keV
gamma sensitivity: 450 CPM/mR/hr calibrated to Cesium-137 (Cs137)
Accuracy ±10% Typical, ±15% Maximum
Measurement Ranges

0.001 to 500 mR/hr
0.01 to 5,000 uSv/hr
1 to 500,000 uR/hr
1 to 225,000 CPM (450 CPM/mR/hr)
0 to 3,750 CPS (7.5 CPS/mR/hr)
Total Count: 0 to 4,294,967,295 (32 Bit Integer)

Measurement Statistics Continuous availability of Elapsed Time, Average,  Minimum and Maximum dose rate in either uR/hr, mR/hr, uSv/hr, CPS or CPM
Time stamp on new maximum
Timed Measurement Selectable 1, 5, 10, 20, 30, 60 and 90 minute interval
Dose Rate Alarm Alarm can be set in mR/hr or uSv/hr to any value within the measurement range
           Internal Data Logging  
Storage 100,000 Bytes non-volatile memory
Logging Intervals Every Minute or Every Hour
Maximum Capacity 91,466 Minutes or Hours (90% Normal Background, 10% Full-Scale)
Minimum Capacity 32,656 Minutes or Hours (100% Full-Scale Measurement Levels)
Logging Output Format Standard Comma Separated Value (CSV) with time stamp and CPM Data (1,000 CPM/mR/hr)
User Interface  
Languages Supported English and Japanese
Display Two-Line, 14 character transflective LCD with backlight for low light conditions
Keypad Weather resistant commercial-grade membrane keypad
Visual Indicator LED pulses on and off when a radiation detection event occurs. LED can be disabled.
Audio Indicator Tone beeps when a radiation detection event occurs.  Audio three volume levels and can be muted.
Input / Output  
Audio Output / Digital Interface Standard 3.5mm jack with three selectable volume levels for output to audio systems, computer speakers or media player headphones.
Jack can also be provisioned by the user for pulse output or as a USB Interface for logging data by PC or transferring internal data logging memory (requires optional cable)
External Power 9 VDC at a minimum current rating of 100mA
Environmental / Physical  
Temperature Range -20° to 51° C (-4° to 125° F)
Size 143 x 83 x 35 mm (5.63" x 3.25" x 1.37")
Weight 261 grams (9.2 oz.) including battery
Compliance CE, Lead-Free
Independently tested and found to be substantially compliant with FCC requirements for home use. Approval to display FCC logo pending.
One Year (120 Days on GM Tube)



1. Assuming that background radiation is less than 25 CPM, the device is using the low-power setting and temperature of operation is 25° C (77° F).

        All specifications are subject to change without notice.

Click on the links below to download Operating Manuals for the PRM-8000:

Quick Start Manuals:

PRM-7000, 8000, 9000 Quick Start Guide (English)

PRM-8000 Quick Start Guide (Japanese)

Expanded Users Guide:

PRM-7000, 8000, 9000 Users Guide (English)

2 Reviews Hide Reviews Show Reviews

  • 5
    Excellent Device

    Posted by Richard G Breusch on Aug 14th 2020

    I am very pleased with my purchase of the PRMh-7000. The PRM-7000 was a fit for me. If you are looking for something to detect as a hobbyist and want to keep it simple, I recommend that you take a look at this product.

  • 4
    Excellent meter for the price.

    Posted by Unknown on Jan 28th 2018

    I am by no means an expert but I have used several different meters at work. I bought the PRM-7000 for personal use and love it. It has all the functions I was looking for and more (data logging). When I got the meter I let it run overnight to determine my back background in mR/h and then tested the meter against my granite counter tops and some uranium glass. The meter registered a .002 mR increase at the granite and over double background against the uranium glass so I know the meter is working well and properly. The only down side is the speed at which it meters. If you are trying to use it as a survey meter, it is slow to react but that is to be expected from this type of meter. I would recommend this to anyone.