Feature: 1. Auto detection: When pressing the AUTO 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, when the power is 300W, refresh once every 15S. 2. Manual detection: When pressing the manual test button, the instrument starts a scan of the maximum power point and refreshes the digital display. 3. Open circuit voltage detection: When pressing the VOC test button, the voltage of solar panel will displayed in real time. 4. Multi-protections: over-voltage, over-temperature, over-current and over rated power protections. 5. Photovoltaic panel power supplys mode, no additional power supplys required, easy to use. Specification: This solar panel multimeter can test the maximum power point and open circuit voltage of photovoltaic panel, also using the photovoltaic panel to supplys power. With the portable design, easy to hold. Come on and try it, it will not let you down. Features: Auto detection: When pressing the AUTO 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, when the power is 300W, refresh once every 15S. Manual detection: When pressing the manual test button, the instrument starts a scan of the maximum power point and refreshes the digital display. Open circuit voltage detection: When pressing the VOC test button, the voltage of solar panel will displayed in real time. Multi-protections: over-voltage, over-temperature, over-current and over rated power protections. Photovoltaic panel power supplys mode, no additional power supplys required, easy to use. Specifications: Material: ABS Power supplys mode: solar panel power supplys Power: 0.1~400W Voltage: 12~60V Current: 0~20A Item size: 165 * 80 * 30mm / 6.5 * 3.1 * 1.2in Item weight: 436g / 1.0lb Package size: 250 * 130 * 65mm / 9.8 * 5.1 * 2.6in Package weight: 500g / 1.1lb Packing list: 1 * Multimeter 1 * Connecting Cable 1 * Alligator Clip Cable 1 * User Manual 1 * EVA Toolkit Package List: 1 * Multimeter 1 * Connecting Cable 1 * Alligator Clip Cable 1 * User Manual 1 * EVA Toolkit