VOLTCRAFT RM-300 Geiger Counter Radiation Detector for Beta, Gamma, X-ray with Audible Alarm VC-13986170

In environments where ionizing radiation may be present—from medical facilities to industrial sites—knowing your exposure level is critical for safety. The VOLTCRAFT RM-300 Geiger counter provides real-time monitoring of beta, gamma, and X-ray radiation, giving you immediate feedback through both visual display and audible alarm. Its compact, portable design ensures you can carry it anywhere, while the sensitive Geiger-Müller tube delivers reliable measurements across a wide range.

Who is it for

This device is ideal for professionals in healthcare, nuclear industry, research laboratories, and emergency response teams, as well as for hobbyists and educators who need a dependable radiation detector. It is also suitable for home use in areas with potential radon or background radiation concerns.

Main features

• Detects beta, gamma, and X-ray radiation with a Geiger-Müller counter tube
• Measures dose rate from 0.01 to 1000 µSv/h and cumulative dose up to 500 mSv
• Adjustable alarm thresholds for dose rate and cumulative dose with audible and visual alerts
• Backlit LCD display shows real-time, average, and cumulative measurements
• Multiple units: µSv/h, µR/h, mSv, and CPM
• Powered by 3 AAA batteries with up to 30 days of typical battery life
• Factory calibrated for accuracy within ±10% (for Cs-137 at 1 mSv/h)
• Operating temperature range: -10 °C to +45 °C

Specifications

• Radiation detection types: Beta, Gamma, X-ray
• Detector type: Geiger-Müller counter tube
• Dose rate range: 0.01 - 1000 µSv/h
• Cumulative dose range: 0.00 µSv - 500 mSv
• Energy range (gamma/X-ray): 48 keV - 1.5 MeV
• Measurement accuracy: ±10% (for Cs-137 at 1 mSv/h)
• Sensitivity: 80 CPM/µSv/h (for Co-60)
• Response time: < 10 seconds (at 10 µSv/h)
• Display: LCD with backlight
• Alarm: Audible warning tone and visual display alarm
• Power source: 3x AAA batteries
• Battery life: Up to 30 days (depending on usage)
• Operating temperature: -10 °C to +45 °C
• Housing material: ABS plastic
• Special features: Real-time measurement, average measurement, cumulative dose tracking

Tips

For accurate readings, hold the device steady and allow a few seconds for the measurement to stabilize. Replace batteries when the low-battery indicator appears to ensure continuous monitoring. Periodically check the calibration, especially if the device is used in critical applications. Store in a dry, cool place when not in use.