Amprobe SOLAR-100 Solar Power Tester is designed to measure solar output that is used to calculate overall energy, efficiency, and placement of solar systems. The Amprobe SOLAR-100 features an easy-to-read display with remote sensor technology, data freeze feature, MIN/MAX recall features, "Power Mode" for measuring power per unit area of incident solar radiation, and "Transmission mode" for calculating solar power transmission percentage of a target material.