GQ Geiger Counter Selection Guide  
Hardware
Model GMC-300E
+V4
GMC-320
+V4
GMC-320
+V5
GMC-300S GMC-320S GMC-320S
+V5
GMC-500 GMC-500+ GMC-600 GMC-600+
Ready-To-Use Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
On Board CPU Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Geiger Tube Installed  One One One One One One One Two SBT-11 LND 7317
Radiation detected Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Beta,
Gamma,
X-Ry
Alpha,Beta,
Gamma,
X-Ry
Alpha,Beta,
Gamma,
X-Ry
LCD Display Size 128x32 128x32 128x32 128x32 128x32 128x32 128x64 128x64 128x64 128x64
Onboard Speaker Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Battery Included Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Battery Type 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion 3.7V Li-Ion
Battery Size AA(14500) AA(14500) AA(14500) AA(14500) AA(14500) AA(14500) 18650 18650 18650 18650
LED Indicator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Audio Data Port Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
USB Data Port Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Mini USB Cable Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Internal Flash Memory 64 KB 1 MB 1MB 64 KB 1 MB 1MB 1MB 1MB 1MB 1MB
Internal Data Logger Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Real-Time Clock Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Electronic Gyroscope   Yes Yes   Yes Yes Yes Yes Yes Yes
Temperature Sensor   Yes Yes   Yes Yes        
WiFi Module      Yes     Yes Yes Yes Yes Yes
On Board
Feature Expand Socket
            Yes Yes Yes Yes
GPS module on board                    
GPRS (Cell phone network)                    
GSM SIM Card Slot                    
GPS Tracking on cell phone                    
Precision Temperature Sensor                    
Air Pressure Sensor                    
Humidity sensor                    
CO2 ( 150 ppm) Sensor                    
CO2 ( 75 ppm) Sensor                    
TVOC (Total Volatile Organic Compounds for air quality)                    
HCHO (Formaldehyde)                    
Battery type selectable
(Charge or Not)
Yes (by software) (by software) Yes (by software) (by software) (by software) (by software) (by software) (by software)
Installed Software/Firmware Main Features
Model GMC-300E
+V4
GMC-320
+V4
GMC-320
+V5
GMC-300S GMC-320S GMC-320S
+V5
GMC-500 GMC-500+ GMC-600 GMC-600+
Maximum CPM 65535 65535 65535 153800 153800 153800 655350 982980 982980 982980
Maximum uSv/h 328 328 328 1000 1000 1000 4250 42500 4250 4250
Maximum mR/h 32.8 32.8 32.8 100 100 100 425 4250 425 425
Back Light Level Control Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Timed Count Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Treshhold Data Logging   Yes Yes   Yes Yes Yes Yes Yes Yes
LCD Contrast Control Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
History Data Save  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
History Data User Erase Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
View history data on unit Yes Yes   Yes Yes   Yes Yes Yes Yes
View history data with PC software Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Cumulative measurment total count user reset Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Speaker On/Off countrol Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
LED  On/Off countrol Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Battery type selectable
(Charge or Not)
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
WiFi data logging      Yes     Yes Yes Yes Yes Yes
Customized  data internet  logging server      Yes     Yes Yes Yes Yes Yes
Fast Estimate Reading       Yes Yes Yes Yes Yes Yes Yes
Vertical Reading Display             Yes Yes Yes Yes
Cumulative Dose Display             Yes Yes Yes Yes
GPRS (Cell phone network)
Data Logging To Server
                   
GPS Location Report                    
WiFi/GPRS/Local selectable/Auto Data Logging                    
GPS Realtime tracking on server                    
Cell Phone Text Message Operating Support                    
                   
Others
Model GMC-300E
+V4
GMC-320
+V4
GMC-320
+V5
GMC-300S GMC-320S GMC-320S
+V5
GMC-500 GMC-500+ GMC-600 GMC-600+
Data Viewer/logger
Software For Windows
Included Included Included Included Included Included Included Included Included Included
Data Logger PRO
Software For Windows
Optional Optional Optional Optional Optional Optional Optional Optional Optional Optional
Online
Forum Technical Support
Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes