1、Main 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. 2、LCD 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. 3、System 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. 4、Current Limit Charging: The solar charge controller adopts double 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. 5、Applicable 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. Item Type: MPPT Solar Charge Controller System Voltage: 12V 24V AUTO No Load Loss: ≤0.4W Solar Maximum Input Voltage: 100V VOC Battery Voltage: 9-32V Maximum Power Point Voltage Range: Battery Voltage+2~100V USB Output: 5V 3A Conversion Efficiency: ≤98% MPPT Tracking Efficiency: >99% Temperature Compensation Coefficient: -2mv/℃/2V (default value) Working Temperature: -10℃-65℃ Protection Grade: IP21 Electromagnetic Compatibility: Conforms to EN61000, EN55022, EN55024 Altitude: Approx. ≤ 3000m / 9842.5ft Size: Approx. 195 x 186 x 75mm / 7.7 x 7.3 x 3in 1 x MPPT Solar Controller 4 x Installation Screws 4 x Expansion Tubes 1 x User Manual