The Daystar DS-100C accurately measures the output of photovoltaic modules and systems up to 50 kW. It is rugged, portable, and designed for field use. Daystar Tracers, developed in the late 1980’s, were one of the first portable, self-contained units available for testing installed photovoltaic systems. Daystar Tracers have proven accurate, reliable, and durable and are used by many photovoltaic companies and national laboratories around the world. Contact Daystar, Inc. for a quote and delivery time. Each DS-100 is shipped in a rugged foam-lined case and includes IVPC software, manuals, and cables. More reasons to buy the Daystar IV Curve Tracer (a .pdf file) here.