Protection: The solar panel MPPT tester is equipped with overvoltage, over-temperature, overcurrent protection and over-rated power protection. Material: This solar panel multimeter is made of ABS material, which is strong, stable and . Upgraded version: This LCD solar photovoltaic panel multimeter belongs to the second-generation upgraded series with backlight. For convenience: The multimeter can detect both automatic and manual MPPT without the need for additional power supply. Function: The solar panel multimeter is used to test the maximum power point and open-circuit voltage of photovoltaic panels. Please allow for some errors caused by manual measurement. Color: Black Package Contents: 1X solar panel MPPT tester 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.