Feature:1. Practical: This solar panel multimeter can test the maximum power point and open circuit voltage.2. Multiple Detection: Solar panel MPPT tester has AUTO MPPT detection and manual MPPT detection. No additional power supply required3. Assurance: Solar panel MPPT meter has over voltage, over temperature, over current protection, safe and reliable.4. Reverse Connection And Power Protection: MPPT tester has solar panel reverse connection protection and over rated power protection.5. Durable Material: The LCD MPPT solar panel multimeter is made of high quality ABS material and is robust and for a long service life.How to Use:I. Automatic MPPT test method: When the [AUTO MPPT] test button is pressed, the multimeter will automatically adjust the test interval time according to the current power value and refresh the digital display.Example: When the solar panel power is 100W, the display will be refreshed every 5S; when the solar panel power is 350W, the display will be refreshed every 15 seconds. When the solar panel power is 700W, the display will be refreshed every 30 seconds.II. Manual MPPT test method: When the [manual MPPT] test button is pressed, the multimeter starts scanni