Feature 1Practical: This solar panel multimeter can test the maximum power point and open circuit voltage. 2Multiple Detection: Solar panel MPPT tester has AUTO MPPT detection and manual MPPT detection. No additional power supply required 3Safety Assurance: Solar panel MPPT meter has over voltage, over temperature, over current protection, safe and reliable. 4Reverse Connection And Power Protection: MPPT tester has solar panel reverse connection protection and over rated power protection. 5Durable Material: The LCD MPPT solar panel multimeter is made of high quality ABS material and is robust and corrosion resistant for a long service life.Item Type:SolarPanelMultimeterMaterial: ABSSize: Approx. 165x80x30mm / 6.5x3.1x1.2in Model: EY800W 3rd GenerationPower: 5-800WVoltage: 12-60VCurrent: 0-35APower mode: Solar Panel PowerFeatures: LCD Display FunctionTarget Audience: Solar Panel Manufacturers, Solar Panel Distributors, Solar Panel Installers, Solar Panel Users, Solar Panel FansTROUBLESHOOTINGERRORCAUSEEXPLANATIONNo displayReverse connection protectionPlease check the input polarityDisplay over powerOver rated powerUsing within the rated power range of the instrumentDisplay over temperatureOver temperature protectionTo be used after coolingDisplay over voltageOver voltage protectionUsing within the rated voltage range of the instrumentDisplay over currentOver current protectionUsing within the rated current range of the instrument .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xSolarPanelMultimeter2 x Connection Cable2 xClip Cable1 x English Manual1 x EVA KitNote1. Manual measurement please allow some errors.2. Please be sure to use this product within the rated voltage & current power range.3. Please be sure to disconnect the solar panel from other equipment or loads before testing.