Features: The EY1800W solars MPPT Photovoltaic Panel Tester features auto/manual detection mode and real time open circuit voltages display, supporting 5 1800W solars systems with over voltages/current/temperature protections for safe photovoltaic panel testing. This multimeter combines a large backlights LCD screen, solars power operation without external electricity, and intelligent MPPT technology to precisely measure largest power point and refreshing data every 5 15S base on wattage. Ideal for solars panel manufacturers, installers, distributors, and renewable energy enthusiasts who require accurate performances analysis during system setups or maintenance. Perfect for field testing solars arrays, troubleshooting residential/commercial photovoltaic installations, or verifying panel output efficiency in outdoor environment with its portable ABS design. Includes auto refreshing functionality for dynamic power monitoring, reverse connection protections for errorproof operation, and a lightweight toolkit for convenient storage in technical workflows. Specifications: Component: ABS Size: Approx.16.5x8x3cm/6.5x3.15x1.18inches Package Includes: 1Set EY1800W solars MPPT Photovoltaic Panel Tester note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.