Testing a solar panel installation can be complex, but we've found a solution to simplify the process. Introducing the TIS PVChecks Multi-function solar tester. This compact test system allows you to simultaneously test polarity, insulation resistance, short circuit current, and irradiance. You can ensure your system functions correctly by inputting the solar panel data. In this thorough review, Gordon Routledge will guide you through the functions of the tester and show you how to test a solar