Feature:1. MEASURING OBJECT: This Geiger counter tube can be used for measuring X rays, rays, and rays, which is convenient and practical.2. GLASS MATERIAL: The Geiger counter tube is made of excellent glass material, with high transparency and good corrosion resistance.3. FOR DIY PROJECTS: This glass Geiger counter is suitable for various nuclear radiation detection application, and suitable for DIY projects.4. COMPACT SIZE: The radiation detector tube is compact and lightweight, easy to install and carry, convenient to use anytime, anywhere.5. RELIABLE OPERATION: With fine workmanship and strict testing, this Geiger counter tube has stable performance, ensuring reliable operation.Specification:Item Type: Geiger CounterMaterial: GlassSlope: 0.3%/V in the range of 380-450Measurement Range: 0.005-5 cGy/hEnergy Response: Within 30% (50KeV-3MeV)Accuracy: 0.01uSv/hStarting Voltage: 350VDischarge Voltage: 550VMeasurement Temperature: -20-55Lifespan: >1x10^10 Pulse.Package List:1 x Geiger Counter