£89.99 £115.99
Out Of Stock.
MPN: GMC-500+
Brand: GQ Electronics
Product Code: PRT1289



This GQ GMC-500+ Geiger counter is a portable nuclear radiation detector. It detects Beta, Gamma, X-Ray Radiation and can be used as continuous radiation monitor or used as personal dosimeter.
Nuclear radiation is invisible but threatening to human health, environment safety. This meter detects and visualizes the radiation real time and record the historical data for future analysis.
The thoughtful design provides easy-to-use basic features as well as advanced features for user to explore
The GQ GMC-500 demo software is a 1:1 actual GMC-500 Plus unit. Its appearance is an exact copy of the GMC-500 hardware interface. You can download it for free and experience the GMC-500 Plus user interface before you purchase the real hardware. Download It Here
The GQ Geiger Counter Data Viewer software can download the time stamped radiation (history) data from the unit and save it on a computer for future references and analysis.

For professional data logging of radiation data, the GQ Geiger Counter Data Viewer (Logger) may be downloaded for free. An even more advanced version, the GQ Geiger Counter Data Logger PRO software may be purchased at low cost from GQ Electronics LLC.
The GQ data viewer software can also be used as realtime data monitor. user is able to save the realtime data into Excel .csv text format, HTML file format etc.
GQ GMC-500 Plus provides open GQ RFC1201 communication protocol for easier system integration. For details Please Contact GQ Electronics LLC
1x GQ GMC-500 Plus
1x USB cable 
1x Quick start guide 
Download link for USB driver and software on Windows 32 and 64 bits
Download link for complete User Guide in pdf format
Designed / developed by GQ Electronics LLC USA
Please Be Aware lots of other sellers on the internet are fake, only we in the UK are authorised to sell these,
Canada and USA are also ok but please check your buying from GQ Electronics, or MCUmall.


  • Dual Geiger tubes
  • Independent calibration factors
  • Push the detection range upper limit 10 times higher
  • Large LCD display
  • Auto horizontal and vertical large font display
  • Advanced CPU on board
  • Built-in flash memory.
  • Built-in WiFi
  • Onboard speaker
  • Real time/clock data logging
  • Unlimited server logging data storage
  • Submit data to any server in the world automatically
  • Rechargeable battery
  • Adjustable backlight and contrast
  • GMC data viewer iOS App
  • Open protocol
  • And many more Features...
Main features:
  • Radiation Detection: Beta, Gamma and X-Ray
  • Audio and visual indication for nuclear radiation detections.
  • Dot matrix LCD digital display model with back light.
  • USB Data port for connection with computer/PC/laptop GQ Soft Geiger Counter software
  • Battery charging feature for charging internal battery.
  • USB DC input port for external power input, so that continually monitoring become possible.
  • Powerfull counter circuit is capable for handling high CPM counting.
  • Hign sensitivity tube M4011 installed (user can remove this tube install other tube if needed)
  • built-in battery charging circuit
  • On-board real-time clock
  • On-board temperature sensor
  • On-board electronic gyroscope
  • One mega bytes on-board flash memory for history data record
  • On-board speaker.
  • Accepts both rechargeable and non-rechargeable 3.6V/3.7V battery
  • DC power adapter operation
  • Detection Dose Range: 0 ~ 42500uSv/h
  • Detection CPM Range: 0 ~ 982980 CPM
  • Detectable Energy Range: 0.1~3.0 MeV
  • Own Background: 0,2 Pulses/s
  • Working Voltage: 3.2-4.0V
  • LCD Display: Dot matrix with back light
  • Working power: 0.045W - 0.2W
  • Power: 3.6V/3.7V battery / USB power
  • Dimension: 5'x2.85'x1' 

The following CPM data is measured by GMC-500 Plus:
CPM reading
Public park granite table
Uranium glass bead 238U
Uranium ore 238U
Standard 5uCi radioactive source



All Orders Are Shipped With Royal Mail, if you require a different shipping method please contact us
All Orders Will Be PostedThe Same Day If Purchased Before 2:00pm GMT, Excluding Weekends And Holidays. Please Contact Us If Your Order Is Urgent.
Shipping To The 'UK' Will Take 1-3 Days Depending On Chosen Service
Shipping To The 'EU' Will Take 7-14 Working Days
Shipping To The 'Rest Of World' Will Take 10-21 Working Days

Shipping to: USA, Canada, Australia, New Zeland, Hong Kong, India, Israel, Malaysia, Singapore, & South Korea. We can ship 7-14 Days, These times are based on the Tracked Services only.

To find out what the shipping cost is for your country, add an item to the cart and click 'Estimate Shipping & Taxes'
You may return any item within 14 days of receipt, in a new and unused condition. If you return items after this time we may refund only the current or last selling price of the item. 

Returned items which are not in new or unused condition or which are returned after the approval period may not be Refunded/Exchanged unless they are faulty. 

No refunds or exchanges can be given on items made to your specification eg.. Custom PCB's/Cable Assemblies unless there is a manufacturing defect or the goods are not as ordered. 

Where a product has a security seal, a refund or exchange will not be given if the seal is broken. Your legal rights are not affected. 
Unfortunately we are not able to refund shipping costs.



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