Radiation Detector Dosimeter Geiger Counter GMC-300E Plus GQ

Radiation Detector Dosimeter Geiger Counter GMC-300E Plus GQ
STANDARD: $24.95

Worldwide Delivery in 12-20 business days

EXPRESS: $34.95

Worldwide Delivery in 8-20 business days

Price $169.95

This item is a brand new; newly designed digital Geiger Counter (Radiation Detector), Data recorder GQ GMC-300E

(Record radiation data and Play it back later) The GQ GMC-300E digital Geiger Muller Counter is designed by GQ Electronics LLC, USA. It is designed to be a portable andconvenient device. The device comes with built-in audible and visual signals for the level of radiation detected. It can beused for radiation detection, monitoring in door, out door and other similar environment. It featured auto data recorder.It can continually monitoring the radiation and log the each second data into internal memory. When it connected with a PCsoftware, the radiation history data can be downloaded to computer and user is able to do analysis data later.
The device equipped a USB port for both USB communication and external power supply/charger.
The GQ GMC-300(E) installed a high capacity rechargeable battery. With power adapter, the battery can be charged while the datacontinually monitored. So never worry about the battery and lost data. The main board also has a real-time clock for all time related data log. The USB port communicates with GQ soft Geiger counter software and the history data viewer software. The GQ soft Geigercounter software is an exact copy of the GMC-300E.
The GQ data viewer software can download the history data in the unit and save it on computer for future references.


  • Radiation detection: Beta, Gamma and X-Ray .
  • Sensitivity to Gamma Radiation: 0.1~1 MeV
  • Own Background: 0,2 Pulses/s
  • Working Voltage: 6~9V
  • LCD Display: Dot matrix with back light
  • Working power: 0.045W - 0.2W
  • Power: 9V battery / USB power

The following CPM data is measured by GMC-300:


CPM reading



Public park granite table


Uranium glass bead 238U


Uranium ore 238U


Standard 5uCi radioactive source


Main features:

  • Small,portable hand-held
  • 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 counting up to 65,535 CPM (Count Per Minute).
  • 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 flash memory for history data record
  • on-board speaker.
  • Dimension: 5'x2.85'x1'
  • 9V battery or DC power adapter operation
  • Text mode provide maximum data information. eg. CPM, Date, Time, Elapsed time, uSv/h, mR/h etc.
  • Real-time graphic mode provide visualized real-time radiation changes, so that much easier to observe the data changes. Italso display the CPM rate at same time. In Graphic mode, the ZOOM feature let user to see from lowest to highest graph onscreen.
  • Back light Control to set the back light ON,OFF and timeout. So that to save the power.
  • Battery charging and battery level indicator.
  • Speaker ON/OFF control.
  • Alarm setting. It sets the alarm ON/OFF, alarm type, alarm level.
  • Date time set the real-time clock.
  • Swivel display setting. 180 degree swivel display provides a convenience reading when unit upside down.
  • Three points calibration. For CPM to uSv/h and mR/h conversion
  • Power saving mode let unit keep running at minimum power.
  • Data saving mode selection. let unit record data every second/minute/hour. Up to 7 days history data
  • History data searching
  • and more....

Package include items:

  • GQ GMC-300E Plus.
  • USB cable
  • DC power wall adapter/chager
  • DC power car adapter/chager
  • Quick start guide
  • Download link for SoftGeigerCounter and USB driver for Windows XP/Vista/Win7 32 and 64 bits
  • Warranty information

    One Year Warranty

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    STANDARD: $24.95

    Worldwide Delivery in 12-20 business days

    EXPRESS: $34.95

    Worldwide Delivery in 8-20 business days

    Price $169.95