Features 1、20A SOLAR CHARGING CONTROLLER: The solar charging controller is compatible with 12V and 24V systems, discharging current 20A; Double USB output 5V 2A, built in industrial microcontroller for automatic management, storage user set a variety of parameters, when the battery is exhausted data will not be lost, suitable for acid battery OPEN, AGM, GEL 2、FUNCTIONAL LCD SCREEN: The solar charge controller is easy to install and operate, the intuitive LCD screen can clearly display the status and data, you can switch modes and parameter configuration 3、AUTOMATIC POWER OFF: PWM solar charge controller has the level of complete power off adjustable, can perfectly protect lithium battery from excessive discharge, suitable for home, industry, business, etc. 4、3 STAGE PWM CONTROL CHARGING: Using direct charging, lifting charging, floating charging three stage PWM control charging mode for full 3 stage PWM regulation. Use the controller to realize efficient and fast intelligent charging, effectively extend the battery life 5、MULTIPLE INTELLIGENT PROTECTION: PWM solar charge controller built in over current protection, short circuit protection, reverse connection protection, open circuit protection, automatic recovery, no damage to the controller, which is a reliable protector for your equipment Specification Item Type: PWM Solar Charge Controller Material: PC Rated Charging Current: 100A System Voltage: 12V 24V(adaptive) Maximum Photovoltaic Voltage: 50V USB Output: 5V 3A Package List 1 x PWM Solar Charge Controller