Whether you’re a hobbyist, student, or professional, this versatile module offers comprehensive functionality for measuring gamma and beta radiation levels, complete with an audible and visual alarm system. With support for popular Geiger-Müller (GM) tubes and PC-based data analysis, it’s the perfect solution for experiments, educational demonstrations, and environmental monitoring.

Key Features

1. Wide Detection Range

   • Capable of detecting gamma radiation from 20 mR/h up to 120 mR/h, and soft beta rays from 100 up to 1800 counts. This broad coverage ensures reliable readings for various applications—whether in a lab, classroom, or field environment.

2. Sound & Light Alarm

   • Integrated buzzer and LED indicators provide real-time alerts when radiation surpasses a set threshold, enhancing safety and awareness without needing constant visual monitoring.

3. Microcontroller-Friendly Interrupt Output

   • Includes an interrupt output interface that can be connected to a variety of microcontrollers (e.g., Arduino, Raspberry Pi) for real-time readings. Display or log data on LCD screens or send it over the web for remote monitoring.

4. Supports Multiple Geiger Tubes

   • Compatible with common GM tubes operating between 330V and 600V (e.g., M4011, STS-5, SBM20, J305). Easily swap or upgrade tubes without extensive modifications to the circuit.

5. PC Data Acquisition & Analysis

   • Connect the module to a computer for detailed data logging, including MATLAB analysis or other software-based processing, perfect for in-depth research or long-term radiation monitoring.

6. Choice of Power Supply

   • Operates on a 5V DC supply or a set of batteries (e.g., 3 × 1.5V or 4 × 1.2V). This flexibility makes it suitable for portable applications and locations without a stable power source.

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   • Unassembled Module Set: For those who prefer hands-on building and customization. Includes all necessary electronic components for constructing your own Geiger counter.

Technical Specifications

• Detection Range: 20mR/h–120mR/h (gamma), 100–1800 counts (soft beta)

• GM Tube Parameters:

  • Diameter: Φ10 ± 0.5 mm

  • Total Length: 90 ± 2 mm

  • Starting Voltage: < 350V

  • Recommended Operating Voltage: 380V

  • Minimum Plateau Length: 80V

  • Maximum Plateau Slope: 10%/80V

  • Extreme Operating Voltage: 550V

  • Max Count Rate: 25 counts/min

  • Operating Temperature: -40°C to 55°C

• Dimensions & Weight (Assembled):

  • PCB Size: ~118 × 63 mm

  • Package Size: ~130 × 80 × 50 mm

  • Package Weight: ~166 g

• Dimensions & Weight (Unassembled):

  • PCB Size: ~108 × 63 × 20 mm

  • Item Weight: ~100 g

  • Package Size: ~120 × 80 × 40 mm

  • Package Weight: ~150 g

• Power Supply: 5V DC or battery pack (e.g., 3 × 1.5V or 4 × 1.2V)

• Current Draw: 30mA to 120mA (depending on operating conditions)

• Microcontroller Compatibility: Works with 5V logic boards (e.g., Arduino UNOR3) via external interrupt (INT) pins

• Software Integration: PC data acquisition, MATLAB analysis, or S-PI example for Radiation Logger

Included Components

1. Unassembled Module Version

   • 1 × Radiation Detector Module Set (PCB + required electronic components)

   • Geiger Tube (if specified)

   • Instructions for assembly and setup

Use Cases

• Educational Demonstrations: Ideal for teaching nuclear physics principles in schools or universities, allowing students to observe real-time radiation levels.

• Environmental Monitoring: Track background radiation in urban or rural settings, or near industrial sites to ensure safe conditions.

• Laboratory Research: Gather precise data for scientific experiments, with the ability to log readings over extended periods.

• DIY Enthusiasts & Makers: Build, customize, and learn about Geiger counter designs, perfect for hobby projects or workshops.

Why Choose This Geiger Counter Kit?

This DIY Assembled/Unassembled Geiger Counter stands out for its flexibility, comprehensive feature set, and ease of integration with popular microcontrollers and data logging software. Whether you need a ready-to-use device or prefer constructing your own, you can confidently measure and analyze radiation levels with customizable thresholds, robust alarm features, and versatile power options. Dive into hands-on learning, advanced research, or environmental safety with a kit designed to grow alongside your needs.