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! Calibration & Service The Radiation Alert® Radiation Survey Meters come with a certificate of conformance from the factory (Typically ±15%) and hold a steady calibration. It’s generally recommended your instrument be calibrated annually from the date it was placed in service, but certain industries or applications may require them more or less frequently. If you want to include a NIST Source Calibration (±10%), please be sure to request one when purchasing a new unit. To have your radiation detector calibrated, please visit our Calibration and Service page for instructions and contact information. Our Calibration Service includes: Unit Operational Analysis, Certificate of Calibration with all applicable data NIST traceable Calibration (Calibrated using a Cs137 (662keV) beam calibrator Conforms to ANSI/NSC SLZ540.1.1994 and ANSI N323-1978. ANSI Z540.3.2006 upon request, Traceable to NIST DG8640/87) Fresh Batteries Calibration Reminder Service The Radiation Alert® Family of Radiation Detectors Radiation Survey Meters, Geiger Counters, Radiation Area Monitors, Radiation Spectrum Analyzers, and Radiation Detection Software. The Ranger offers maximum performance in a lightweight, rugged nuclear radiation detector for surveying at the facility or in the field. The Ranger ...Radiation Alert RangerSick of getting tripped up by cables? Want that free hand back? Tired of lugging around a meter the size of a lunch ...Radiation FriskerRecognizing elevated radiation levels and detecting radioactive materials has never been easier. The ultra sensitive Mini Rad-V vehicle mounted radiation detector takes the ...Mini RAD-V Vehicle Radiation DetectorThe Ranger EXP is a maximum performance, lightweight, rugged nuclear radiation detector to use for surveys in the field or at your facility ...Ranger EXPThe new ergonomic MC1K is a handheld survey meter using a built-in energy compensated GM detector. It detects gamma and x-rays up to ...Monitor MC1KThe Monitor 4 is compact, analog radiation detector. A general purpose survey meter capable of detecting alpha, beta, gamma, and x-rays over 3 ...Monitor 4 Ionizing Radiation Basics We thought it would be helpful to include this information, since our instruments are sometimes purchased by individuals with no background in radiation protection. Our Radiation Basics information is based on features that are available with most of our Radiation Alert® meters. Click here to learn about ionizing radiation. Radiation Info Links RadiationAnswers.org HPS.org CRCPD.org Our Radiation FAQs Radiation Basics What Are Safe Levels of Radiation? Radiation Calculator EPA Radiation Protection Radiation Map Websites RadResponder Safecast.org EPA RadNet RadViews.com US National Radiation Tracking Center US NRC European Commission JRC Trade Show Calendar Come see us! No posts found. Latest Updates @ Radiation Alert Subscribe up top in the Articles menu to receive updates on industry articles, training, software updates, and new releases! Ranger EXP Quick Start Video Who Uses Our Radiation Detectors? The Radiation Alert® Ranger for First Responders The Radiation Alert® Frisker for 1st Responders Taking a Radiation Swipe Survey – Radiation Alert® Ranger Wipe Test Plate Quick Start Guide SEI Inspector USB Video Quick Start Guide Radiological Quantities And Units: A “Real World” Perspective Radiation Frisker Video Quick Start Guide About Radiation Alert® by S.E. International, Inc.