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Check the listing for details. Radiation Dose Detector Nuclear Radiation Detector for Gamma /X / Hard Beta Rays. Condition: New. Listed at 133.32 USD. Monitor X, gamma and hard beta rays. Detection rays: gamma, X and hard beta rays. Detector: Energy Compensation GM Tube (Geiger Counter Tube). Dose equivalent rate: 0.01~1000μSv/h. Dose rate: optional at 0.5, 1.0, 2.0.