The Triplett SPLT100 Solar Power Light Meter is an essential tool designed for measuring solar power levels to ensure maximum efficiency in your solar panel installation. This versatile device also finds use in various applications like agriculture, meteorology, optical and physics laboratories, and high-performance window manufacturing for the automotive and building industries. With its capability to read in either W/m2 or BTU/(ft2*h), the SPLT100 offers flexible measurement options. Its swift 0.25-second response time and cosine corrected silicon photodiode sensor offer accurate and reliable results. The meter has an auto/manual range selection, Min/Max function to record the highest and lowest readings over time, and a Data Hold feature to freeze the display for easy viewing. It also features a low battery indicator to alert you when it's time for a battery replacement.The package includes a sensor with a 13.4" (34cm) integrated cable, (3) AAA batteries, and a carrying case. The product comes with a 1-year warranty.