Features 1、FOR OFF GRID PHOTOVOLTAIC SYSTEMS: Solar charge controller can detect the power generation of solar panels in real time, and track the highest voltage current value(V1), so that the system can charge the battery at the maximum power output. Used in solar off grid photovoltaic system, coordinate the work of solar panels, batteries and loads, which is the core control component of off grid photovoltaic system 2、LCD DISPLAY: MPPT solar charge controller use LCD liquid crystal display operating status, operating parameters, control parameters, etc. The user can easily check the parameters by pressing the button, and can modify the control parameters according to the need to adapt to different system requirements. With 5V 3A dual USB port 3、PROTECTION FUNCTIONS AND SYSTEM MAINTENANCE: Solar charge controller with input power limit protection, too high photovoltaic input terminal voltage, photovoltaic input, end short circuit protection, photovoltaic input reverse protection, load overpower protection, load short circuit protection, night prevent backcharge protection, TVS thunder protection, overtemperature protection, To minimize damage to product components due to installation errors and system failures 4、DUAL FAN SYSTEM HEAT DISSIPATION: Solar charge controller regulator has a current limiting charging mode, when the panel power is too large, the charging current is greater than the rated current, the controller automatically reduce the charging power, so that work at the rated charging current 5、WIDELY USED: Solar charge controller regulator support colloidal battery, sealed battery, open battery, lithium battery and other different types of battery charging procedures. Can be used in household photovoltaic power generation system, communication base station system, highway intelligent monitoring system, landscape lighting project, etc. Specification Item Type: MPPT Solar Charge Controller No Load Loss: ≤0.4W USB Output: 5V 3A Conversion Efficiency: ≤98% MPPT Tracking Efficiency: >99% Temperature Compensation Coefficient: -2mv/℃/2V(default) Operating Temperature: -10℃-+65℃ Protection Level: IP21 Electromagnetic Compatibility: EN61000, EN55022, EN55024 Altitude: ≤3000meter Size(LxWxH): Approx. 135 x 135 x 54mm / 5.31 x 5.31 x 2.13in Package List 1 x MPPT Solar Charge Controller 4 x Installation Screws 4 x Wall Plugs 1 x User Manual