You can download the full or the Russian Original Manual (PDF) for more detailed schematics and measurement formulas.
: Measure the ambient background radiation in Sv/h (0.1 to 99.99 range) or R/h (10 to 9999 range). pripiat dozimetr instruktsiia
: The device can estimate the specific activity of substances in Ci/kg or Bq/kg. Key Technical Specifications Range / Detail Gamma Dose Rate 0.1 – 99.99 Beta Flux Density 6 – 6000 particles/( Alert System 31 programmable sound alarm thresholds (0.1–16 $\mu$Sv/h) Detectors Built-in Geiger-Müller counters Important Maintenance Notes You can download the full or the Russian