Voltage-Current curve tracer for maintenance and troubleshooting of photovoltaic systems. Measures the IV characteristics of one or multiple modules or an entire string up to 1500 V/10 A. Measures open-circuit voltage (Voc) and short-circuit current (Isc). Features a database of 30,000 photovoltaic modules for selection. Allows detection of IV curves and key parameters for individual modules or strings up to 1500 V and 10 A or 1000 V and 15 A. The user-updated database enables comparison of measured data with nominal values to assess efficiency. Optional decentralized IV curve measurement with the SOLAR02 remote device via RF connection. IV curve display at the end of testing confirms compliance with manufacturer specifications.