Fluke's Bleeper mR - Personal Radiation Monitor
Bleep rates for background radiation: Approx. 1 bleep every 15-30 minutes.
1 mR/h: approx. 1 bleep every 20 seconds.
100 mR/h and above: continuous signal to at least 60 Sv/h (6000 R/h)
100 mR/h and above: continuous signal to at least 60 Sv/h (6000 R/h)
Energy Range: 45 keV to 6 MeV (±25%)
Dose rate response: Linear to 5 R/h (±20%)
Display: LCD 0.1 mR to 999,999.9 mR