This solar panel multimeter can test the maximum power point and open circuit voltage of photovoltaic panel. The photovoltaic panel power supplys is more energy-saving and does not require additional electricity. If you are looking for this product, come and have a try, it will not let you down. Features: Auto MPPT Detection: When pressing the AUTO MPPT test button, the instrument automatically adjusts the test interval time according to the current power value and refreshes the digital display. For example, when the power of solar panel is 100W, refresh once every 5S. Manual MPPT Detection: When pressing the manual MPPT test button, the instrument starts a scan of the maximum power point and refreshes the digital display. Open Circuit Voltage Realtime Display: The open circuit voltage will display on the LCD screen at any time, giving you a better experience. LCD Display with Backlight: The upgraded screen adopts LCD with backlight, you can turn on or turn off the screen with your like. Multi-protections: over-voltage protects, over-temperature protects, over-current protects and over rated power protects. Wide Applications: This multimeter can be widely used by PV panel manufacturers, PV panel distributors, PV panel installers, PV panel users and PV panel fans. Specifications: material: plastic Color as shown Material: ABS Type: EY800W Power supplys mode: solar panel power supplys Voltage: 12~60V Power: EY800W: 5-800W Current: EY800W: 0~35A Item size: 165 x 80 x 30mm / 6.5 x 3.1 x 1.2in Item weight: 470g / 1.0lb Package Contents: 1 x Solar Panel Multimeter 1 x Connecting Cable 1 x Alligator Clip Cable 1 x EVA Toolkit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. .Anqing store merchandise