The Triplett 2000 Series Railroad Testers are designed to perform standard maintenance tasks (using Volts, Ohms, and Amps measurements) as well as specialized tasks requiring measurements on railroad coding equipment. Model 2003 includes all of the features of the Model 2000 with the addition of Cab Filters. Designed for railroads using both 60Hz and 100Hz coding systems. Includes: test leads, padded water repellent carrying case, shoulder strap, and batteries.