Upgraded 800W Solar Panel Tester Photovoltaic Multimeter, Troubleshooting Tool with Smart MPPT Display, Measuring Range (5~800W, 20~120V, 0~60A) for Solar PV Panel Testing Enhanced PV Tester: The Elejoy 800W Solar Panel Tester can measure solar panels with output power ranging from 5W to 800W(800W is 5W-800W), voltages from 20V to 120V, and currents up to 60A. This makes it suitable for a wide range of solar applications, including residential and commercial systems. / Upgraded 1800W Solar Panel Tester Photovoltaic Multimeter, Troubleshooting Tool with Smart MPPT Display, Measuring Range (5~1800W, 20~120V, 0~60A) for Solar PV Panel Testing Enhanced PV Tester: The Elejoy 1800W Solar Panel Tester can measure solar panels with output power ranging from 5W to 1800W(1800W is 5W-1800W), voltages from 20V to 120V, and currents up to 60A. This makes it suitable for a wide range of solar applications, including residential and commercial systems. Double Voltage Range: The PV Panel Tester's voltage range is upgraded to 20V to 120V, supporting series-connected solar panels below this limit, making it ideal for more complex PV systems. Clear LCD Display: The tester features a large, easy-to-read OLED LCD screen that clearly displays measurements even in direct sunlight, ensuring accurate data during testing. Multiple Safety Protections: Equipped with overvoltage, overheating, overcurrent, and reverse polarity protection, the tester ensures safe operation. It also requires no batteries - just connect to the solar panel and start testing. Compact Design: Weighing only 460 grams and housed in a durable EVA box, this tester is lightweight and easy to carry. It comes with and alligator clip cables for use with a variety of solar installations. Switch between automatic and manual modes; It has over temperature, over voltage, and over current protection; Reverse connection protection for photovoltaic panels Over rated power protection No additional power supply req