Radiation Detector Dosimeter Geiger Counter GMC-320 Plus GQ

Radiation Detector Dosimeter Geiger Counter GMC-320 Plus GQ
STANDARD: $24.95

Worldwide Delivery in 12-20 business days

EXPRESS: $34.95

Worldwide Delivery in 8-20 business days

Price $175.00

The GQ GMC-320 Plus digital Geiger Counter is an enhanced version of GMC-300E and GMC-320. It is designed to be a portable and convenient device. The device comes with built in audible and visual signals for the level of radiation detected. It can be used for radiation detection and monitoring both indoor and outdoor, as well as in other similar environments. It features automatic data recording. It can continually monitor the radiation and log the data each second into internal memory. When connected to a PC, software can download the radiation history data to the computer and the user is able to analyze those data later.

The device is equipped with an USB port, utilized for communication and external power supply/charging of the internal rechargeable battery.
The GQ GMC-320 Plus internal rechargeable battery can be charged with the supplied wall adapter or with the car adapter for the cigarette lighter. Using the adapters, continuous data monitoring is possible. Using either power adapter you will not have to worry about the batteries charge condition or any data loss.
The main board also has a real time clock on board for time related data logging purposes.
The USB port communicates with the GQ GMC-320 Plus Soft Geiger Counter software and the GQ Geiger Counter Data Viewer software. The GQ GMC-320 Plus Soft Geiger Counter software appearance is an exact copy of the GMC320 Plus hardware human interface. You can download it for free and experience the GMC-320 Plus user interface before you purchase the real hardware.
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.
GQ GMC-320 Plus provides open GQ RFC1201 communication protocol for easier system integration. See software download section for detailed protocol.


  • Radiation detection: Beta, Gamma and X-Ray .
  • Sensitivity to Gamma Radiation: 0.1~1 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

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

- Powerful counter circuit is capable for handling high CPM counting

- High 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

- Once 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

- Dimension: 5 x 2.8 x 1 in

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. Battery type selectable in software.For rechargeable or non rechargeable Speaker ON/OFF control. Alarm setting. It sets the alarm ON/OFF, alarm type, alarm level. Date time set the real-time clock. Temperature display in celsius OR fahrenheit. Swivel display setting. Auto 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 Variable serial communication baud rate and more....

Package include items:

- GQ GMC-320

- USB cable

- DC power wall adapter/charger

- DC power car adapter/charger

- Protective pouch

- Quick start guide

- Download link for SoftGeigerCounter and USB driver for Windows XP/Vista/Win 7/Win 8 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 $175.00