GQ GMC-800

Last updated: November 9, 2026

GQ GMC-800

A cheap, easy-to-read beta-gamma counter with a big screen and a lot of memory. Good for a first counter at home.

  • GM tubeDetector
  • β γ XDetects
  • 132 CPM per µSv/h (Co-60)Sensitivity
  • 2,000 µSv/hMax dose rate
Check price at Amazon$85.98

Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Large color screen is easy to read at a glance
  • Logs to 2 MB of memory and charges over USB-C
  • Takes a standard replaceable 14500 cell
Cons
  • No Wi-Fi, unlike the GMC-500
  • Warranty term not published
  • Gamma and beta only

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its detector type. How we rank explains each one.

Specifications

Model numberGMC-800
Detection
DetectorGM tube
Radiation typesβ γ X
Sensitivity132 CPM per µSv/h (Co-60)
Max dose rate2,000 µSv/h
Energy range100 to 3,000 keV
Gamma spectrumNo
Features
Data loggingYes
ConnectionNone
Battery3.7 V 14500 Li-ion, replaceable, or USB power

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