The Gravity: Geiger Counter Module is a sensitive radiation detection module and high-performance Geiger Counter designed for educational use, physics demonstrations, and electronics integration. As a versatile nuclear radiation detector, it comes pre-equipped with a M4011 Geiger tube, allowing it to detect ionizing radiation such as X-rays, gamma rays, and nuclear particles. This module is ideal for makers, students, and engineers working on projects involving radioactive sources, natural radiation detection, or true random number generation. This radiation monitor provides reliable data for any DIY setup. Not for use in radiation dose measurement that directly affects personal safety. What Can It Detect? Radiation sources can be hidden in: Marble and ceramic materials Ores, minerals, and gemstones Anion powders and decorative materialsThese can emit small amounts of natural radioactive elements, undetectable without a Geiger counter. Features High-sensitivity M4011 Geiger tube for precise radiation detection ±400V drive voltage for reliable particle detection Digital pulse signal output (easy to interface with Arduino, Raspberry Pi, and other MCUs) Great for STEM learning, radiation science, and DIY physics experiments using a Geiger counter kit Applications Detecting ionizing radiation from natural and synthetic sources as a radiation monitor Creating DIY nuclear radiation detector monitoring devices Teaching nuclear physics principles with an accurate Geiger Counter Building entropy-based random number generators Technical Specifications Geiger Counter Module Power Supply: 3.3V ~ 5V Signal Output: Digital output (low when pulse detected) Driving Voltage: Approx. 400V Maximum Detection Range: 1200 µSv/h (theoretical) Dimensions: 107 × 42mm (4.21” × 1.65”) M4011 Geiger Tube Operating Voltage: 380V ~ 450V Background Counts: ~25 CPM CPM Ratio: 153.8 CPM/(µSv/h) Tube Size: Φ10mm × 88mm Included in the Box Gravity: Geiger Counter Module (w/ M4011 Tube) ×1 Gravity 3-Pin Sensor Connector ×1 Example Projects DIY Desktop Nuclear Radiation MonitorMonitor local ionizing radiation levels using Unihiker or microcontrollers. Arduino Ionizing Radiation DetectorSimple integration with Arduino to visualize real-time counts with this nuclear radiation detector. Important Notes This product is designed for educational and demonstration purposes only. It cannot be used for professional radiation safety evaluation or medical purposes. Reference Product wiki
