Features 1Main Purpose: Real time detection of the power generation of solar panels, tracking the highest voltage and current value (V1), enabling the system to charge the battery at maximum power output, applied in solar off grid photovoltaic system, coordinating the work of solar panel, battery, and load. 2LCD Screen Display: The solar panel controller adopts an LCD screen to display operating status, operating parameters, control parameters, etc. Users can use buttons to view various parameters and modify control parameters as needed to meet different system requirements. 3System Protection: With input power limiting, high voltage at the photovoltaic input end, short circuit at the photovoltaic input end, reverse connection of the photovoltaic input, load overpower, load short circuit, night anti reverse charging, TVS arrester, and over temperature protection. 4Current Limit Charging: The solar charge controller adopts dual fan cooling, and has a current limiting charging mode. When the battery panel power is too high and the charging current exceeds the rated current, the controller automatically reduces the charging power. 5Applicable Range: Supports charging of colloidal batteries, sealed batteries, open batteries, lithium batteries, etc., and can be used in household photovoltaic power generation system, comm base station system, highway intelligent monitoring system, landscape lighting, etc. Specification Item Type: MPPT Solar Charge ControllerNo Load Loss: 0.4WUSB Output: 5V 3AConversion Efficiency: 98%MPPT Tracking Efficiency: >99%Temperature Compensation Coefficient: -2mv//2V (default value)Working Temperature: -10-65Protection Grade: IP21Electromagnetic Compatibility: Conforms to EN61000, EN55022, EN55024Comm Method: RS485 (not included)Altitude: Approx. 3000m / 9842.5ftSize: Approx. 195 x 186 x 75mm / 7.7 x 7.3 x 3in Package List 1 x MPPT Solar Controller4 x Installation Screws4 x Expansion Tubes1 x User Manual