IMI Inspector Alert™ V2


Important: Please select your preferred unit of measurement


IMI Inspector Alert™ V2

The IMI Inspector Alert™ V2 measures alpha, beta, gamma and x-radiation using a 2-inch “pancake” GM detector with high sensitivity to common beta and alpha sources. The easy-to-read digital display shows readings in your choice of µSv/hr, mR/hr, CPM, or CPS. The Total/Timer feature allows timed readings from one minute to 40 hours for precise measurement of low level contamination. An audible alert sounds when the radiation reaches a user-adjustable level.

  • Quickly alerts the user to the presence of harmful levels of nuclear radiation
  • Improves safety in the laboratory and in the field
  • Automatically compensates for GM tube dead time
  • Will not jam in high radiation fields
  • CE Certified, RoHS Compliant & Meets WEEE standards


Sensor: Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75″ (45 mm). Mica window density 1.5-2.0 mg/cm²

Display: 4-digit liquid crystal display with mode indicators

Accuracy: ± 10% typical; ±15% maximum

Alert: µSv/hr: 0 to 500; mR/hr: 0 to 50; CPM: 0 to 160,000; Beeper sounds the alert

Anti-Saturation: Readout holds at full scale in fields up to 100 times the maximum reading

Audio: Beeper chirps with each radiation event (can be muted)

Averaging Periods: Display updates every 3 seconds, showing the average for the past 30-second time period at normal levels. The averaging period decreases as the radiation level increases.

Certifications: CE Certified: Emissions: EN 55011:98 + A2 (Class B emissions limits); EN 61326:06 (Class B) RF Emissions Immunity: EN 61326:06 (Annex C) Portable Test and Measurement Equipment; EN 61000-4-2:95 (ESD); EN 61000-4-3: 97; RoHS Compliant, Meets WEEE standards, and ISO 9001:2001 & ISO 14001

Count Light: Red LED flashes with each count

Detector: Halogen-quenched Geiger-Mueller tube. Effective diameter 1.75″ (45 mm). Mica window density 1.5-2.0 mg/cm² Detects Alpha, Beta, Gamma, and X-radiation

Efficiency: For 4 pi at contact

Beta C-14 (49 keV avg. 156 keV max.): 5.3% Bi-210 (390 keV avg. 1.2 MeV max.): 32% Sr-90 (546 keV and 2.3 MeV): 38% P-32 (693 keV avg. 1.7 MeV max.): 33%

Alpha Am-241 (5.5 MeV): 18%

Gamma Sensitivity: 3500 CPM/mR/hr referenced to Cs-137 Smallest detectable level for I-125 is .02 mCi at contact

Manual: IMI Inspector Alert™ V2 Surface Contamination Meter

Operating Range: µSv/hr: .01 to 1,100 mR/hr: .001 to 110 CPM: 0 to 350,000 CPS: 0 to 5,000 Total: 1 to 9,999,000 counts

Options: Computer software and cable available

Ports: Output: Stereo 3.5 mm jack sends counts to computers, data loggers, other CMOS-compatible devices, earphones, and educational data collection systems. 0-9 V, 1 kOhm impedance. Input: 2.5 mm mono jack provides calibration input. 0-3.3 V, > 5 µs width, rising edge triggered.

Power: One AA alkaline battery (9-volt alkaline battery on some models).  Average battery life may be expected to exceed 3,500 hours on AA models and 2,000 hours on 9 Volt models at  normal background radiation levels at sea level. Battery life decreases as radiation level rises.  This instrument (AA versions) can operate with one Energizer Ultimate Lithium Cell for even longer battery life.

Size: 150 x 80 x 30 mm (5.9″ x 3.2″ x 1.2″)

Temperature Range: -20º to +50º C , -4º to +122º F

Timer: Can set sampling periods of 1 minute to 40 hours.

Weight: 323 grams (11.4 oz) including battery


International Medcom is passionate about quality and customer satisfaction. We provide the best radiation detector warranty available anywhere.

This product is warranted to the original owner to be free from
defects in materials and workmanship for two years from the
date of purchase with the exception of the Geiger-Mueller tube,
which is warranted for one year. The battery is not included
in this warranty. International Medcom, Inc. will, at its own
discretion, repair or replace this instrument if it fails to operate
properly within this warranty period provided that it has not
been subjected to misuse, abuse, or neglect. Modification or
repair of this instrument by anyone other than International
Medcom, Inc. voids this warranty.

Contamination of this instrument with radioactive materials
voids this warranty. Contaminated instruments will not be
accepted for servicing at our repair facility.

The user is responsible for determining the suitability of this
product for the intended application. The user assumes all risk
and liability connected with such use. International Medcom,
Inc. is not responsible for incidental or consequential damages
arising from the use of this instrument.

The terms of this warranty are subject to change without notice.

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