Fnirsi

FNIRSI – Brand Review & Overview

FNIRSI is an electronics brand known for affordable test gear like oscilloscopes, multimeters, and compact Geiger counters, including models such as the GC-01, GC-02, and GC-03. Its radiation detectors use Geiger–Müller tubes to measure ionizing radiation and are aimed at beginners and hobby users who want an accessible way to monitor gamma, beta, and X-ray levels without paying for full professional survey meters.

On this site, FNIRSI products would typically include handheld, rechargeable radiation detectors with color displays, multiple readout units (such as μSv/h, mR/h, CPS, and CPM), cumulative dose tracking, and configurable audio, visual, and vibration alarms. These compact instruments are designed for simple one-handed operation and everyday portability, making them useful for home environment checks, basic rock and antique surveys, and general radiation awareness rather than regulated workplace dosimetry.

As you browse this brand, think about how serious your measuring needs are and which features matter most—battery life, logging capability, screen readability, or overall size. Choosing the right FNIRSI detector helps you balance low cost and convenience against accuracy, range, and robustness so you end up with a tool that fits your curiosity and light-duty radiation monitoring tasks.