Features 【Automatic MPPT Detection】: When the AUTO MPPT test button is pressed, the instrument automatically adjusts the test interval according to the current power value and refreshes the digital display. 【Manual MPPT Detection】: When the manual MPPT test button is pressed, the instrument starts to scan the maximum power point and refresh the digital display.Through the manual mode, users can conduct MPPT tests at any time according to their needs to obtain the best power output. 【Open Circuit Voltage Detection】: When the VOC test button is pressed, the voltage of the solar panel will be displayed in real time to help users understand the status of the panel to ensure the normal operation of the panel. 【Multiple Protections】: over-voltage protection, over-temperature protection, over-current protection, over-rated power protection. 【Photovoltaic Panel Power Supply Mode】: Photovoltaic panel power supply mode, no need for additional power supply, can be used in various scenarios, easy to use. Features: 1.When the AUTO MPPT test button is pressed, the instrument automatically adjusts the test interval according to the current power value and refreshes the digital display. 2.When the manual MPPT test button is pressed, the instrument starts to scan the maximum power point and refresh the digital display.Through the manual mode, users can conduct MPPT tests at any time according to their needs to obtain the best power output. 3.When the VOC test button is pressed, the voltage of the solar panel will be displayed in real time to help users understand the status of the panel to ensure the normal operation of the panel. 4.over-voltage protection, over-temperature protection, over-current protection, over-rated power protection. 5.Photovoltaic panel power supply mode, no need for additional power supply, can be used in various scenarios, easy to use. Specification: Material: ABS Power: 0.1-400W Voltage: 12-60V Current: 0-20A Display mode: LCD liquid crystal display (EL400B) Backlight: Yes (EL400B) Power supply mode: photovoltaic panel power supply Item size: 165*80*30mm/6.5*3.1*1.2in Packing size: 250*130*65mm/9.8*5.1*2.6in Package weight: 500g Packing list: 1 * Multimeter 1 * connection line 1 * Alligator clip cable 1 * Manual 1 * toolkit Package List