Radiation Alert® Ranger – Quick Start Guide Posted on April 23, 2018February 9, 2019 This video will get you started with the use of your Radiation Alert® Ranger. Watch this quick start video guide to run through the menu and the general settings and features of your radiation detector. With the exception of the built in efficiencies, this video is also applicable to the Monitor 200 and Monitor 1000EC models as well, as they all have the same basic, simple to use interface. The Radiation Alert® Line of Geiger Counters and Radiation Detectors by S.E. International. Instructional videos and reviews.