The Ranger offers maximum performance for surveying at the facility or in the field. It has been designed for industrial environments, but it still has all of the features you’ve come to love in the lab. This small, handheld, microprocessor-based instrument which offers sensitivity to low levels of alpha, beta, gamma, and x-rays and has built in efficiencies for common isotopes to calculate activity in Bq and DPM. It has a backlit digital display, internal memory, selectable alert levels, adjustable timer, a red count light and a beeper that sounds with each count detected. Includes free Observer USB Software
— S.E. International Inc.