Retail Price: $299.00
The CRM-100™ is a general purpose Geiger counter that measures alpha, beta, gamma, and x-radiation intended for personal safety and educational purposes. The CRM-100™ features a 3-second update on its digital liquid crystal display (LCD). The LCD shows current radiation levels in milliroentgens per hour from .001 to 110 or counts per minute (cpm) from 0 to 350,000. Select SI units and the LCD shows readings in microsieverts per hour from .01 to 1100 or counts per second (cps) from 0 to 3,500.

This personal radiation detection device also offers an accumulated total and timer function, up to 9,999,000 counts and 40 hours. Additionally, a red LED will blink and a beeper will chirp with each count. This device is very easy to use and recommended for anyone that wants affordable peace of mind. The CRM-100™ is ideal for accurately measuring low levels of radiation. 
•  Detect the presence of ionizing radiation just about anywhere
•  Measure levels and monitor changes in background radiation
•  Detect radiation contamination in air, food, and water
•  Demonstrate principles of nuclear physics
•  Check for radioactive minerals in the earth
•  Very user friendly
•  Detects; alpha, beta, gamma, and x-radiation
•  Displays accumulated exposure total
•  Offers timer function
•  Halogen-quenched Geiger-Müller detector (LND712)
•  Windows Compatible
•  ISO 9001:2001 & ISO 14001 Certification


     Halogen-quenched Geiger-Müller detector (LND712)
     Mica end window density is 1.5-2.0 mg/cm²
     Side wall is 0.012″ #446 stainless steel
     Detects Alpha, Beta, Gamma, and X-radiation

Display: 4-digit liquid crystal display with mode indicators

Accuracy: ±10% typical; ±15% max. (mR/hr and µSv/hr modes)

Alert: No Alert feature. If you need user-adjustable alerting in a similar price point we recommend the Radalert 100™.

Audio: Beeper chirps for each count (can be muted)

Calibration: Cesium 137 (gamma)

Certifications: CE Certified, RoHS Compliant, and Meets WEEE standards

Count Light: Red LED flashes with each count

Operating Range:

    mR/hr: .001-110                   CPM: 0-350,000
    µSv/hr: .01-1,100                 CPS: 0-3,500
    Total: 0-9,999,000 counts     Timer: up to 40 hours

Options: Computer cable and software (Windows compatible)


Stereo 3.5 mm jack sends counts to computers, data loggers, other CMOS-compatible
     devices, and headphones

Mono 2.5 mm jack provides electronic calibration input

One 9-volt alkaline battery; average battery life is 2160 hours at normal background, 625 hours at 1 mR/hr with beeper off

1000 cpm/mR/hr referenced to Cs-137

5.9″ x 3.2″ x 1.2" (150 x 80 x 30 mm)

8 oz. (225 grams) including battery
*Specifications subject to change without notice.

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Radalert 100™

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