This is a brand new Seaward Solar Clamp Tester designed for testing solar panels. The device can accurately measure the current and voltage output of solar panels by clamping onto the cables without the need for direct contact. Additionally, it also functions as an Irradiance Tester, allowing you to measure the amount of sunlight hitting the solar panels to ensure optimal efficiency. The Solar Clamp Tester and Irradiance Tester is a versatile tool for professionals in the solar energy industry to efficiently assess and maintain solar panel systems.