S.E. International, Inc.

S.E. International, Inc. designs, manufactures, and distributes radiation detectors under the Radiation Alert® brand. We engineer our instruments to be reliable, affordable, and intuitive. S.E.I. provides a diverse line of Geiger survey meters, radiation area monitors, radiation spectrum analyzers, software, and apps. Since 1979, we’ve helped protect the safety of people, facilities, and the environment with our line of nuclear radiation detectors.  Compact handhelds offer high sensitivity to multiple types of ionizing radiation detection including alpha, beta, gamma, and X-ray radiation.

At SEI, quality is a top priority and we ensure that our customers get the service and support they need.  Our staff is committed to innovation, our customers, and excellence in radiation detection.  We are dedicated to helping you find the appropriate instrument for your radiation detection needs. Thank you for your interest in our Radiation Alert® instrumentation. We look forward to serving you!