Wide range of applications: Solar charge controller: suitable for solar power generation systems, smart homes, solar chargers, solar ventilation systems, solar light boxes, solar advertising signs, solar warning lights, etc.; Also suitable for home, office, industry, etc. Charging current: 30A - USB output: maximum 5V/2A. Battery voltage: 12V/24V. Automatic detection. Size: 133 x 70 x 35 mm. Weight: 132 g. Two 5V USB output ports to support phones, tablets or other devices that require 5V power. (Note: The solar charge controller is only suitable for lead-acid batteries: OPEN, AGM, GEL) Powerful Functions: Solar controller, LCD display, remote control. One button, full battery, automatic separation, automatic memory, data storage. Built-in industrial microcontroller, you can set the charge and discharge parameters and charge mode, simple to set and use. Multiple Protection + Light Control Time Control: Built-in overcurrent protection, short circuit protection, reverse polarity