1、MAIN PURPOSE: Helps you automatically manage solar panel and battery with built in industrial microcontrollers, compatible with 12V 24V systems. 2、DUAL USB OUTPUT: This solar charge controller has dual USB output 5V 2.5A (maximum), which can charge mobile phones, tablets, PCs, etc. 3、3 STAGE PWM: Adopts fast charge, large charge and floating charge 3 stage PWM regulation to realize efficient and fast intelligent charging 4、CIRCUIT PROTECTION: With overload, overcurrent, short circuit, reverse connection, undervoltage and overcharge protections for improved efficiency and safety 5、MULTIPLE USAGES: Suitable for solar power generation systems, smart homes, solar ventilation systems, solar light boxes, billboards and warning lights, etc. Item Type: Solar Charge Controller System Voltage: 12V/24V automatic adaptation (11.1V 12.8V adjustable) Rated Discharge Current: 10A Maximum Photovoltaic Voltage: 12V system < 25V, 24V system < 50V Standby Current: <10mA Working Environment Temperature: -35℃~+60℃ Application: Suitable for solar power generation systems, smart homes, solar chargers, solar ventilation systems, solar light boxes, solar billboards, solar warning lights, etc. 1 x Solar Charge Controller 1 x English User Manual