Solar charge controller: Industrial-grade master chip. 16 AD sampling accuracy. temperature. charging current. discharge current accurate real-time display. Solar panel voltage contains 12V solar panel. 18V. 24V solar panel. 36V. Discharge reconnection: 12.6V (default. adjustable). Tracking function: Automatic focus MPPT tracking charging. high charging efficiency. non-stop detection during charging. two-way focus tracking. It has been thoroughly quality tested before shipment to ensure a perfect product. If you are not satisfied. we accept all return. replacement or refund requests. More protection functions: Built-in short-circuit protection. open-circuit protection. reverse protection. overload protection. Three-stage charge management. effectively protects the battery. A controller and a user manual are included in the package. With large LCD display: The solar panel controller has a large LCD display. all parameters adjustable. Two-way MOS tube anti-backflow circuit. high-power charging mode. ultra-low heating. Specification: Condition: 100% Brand New Material: ABS Color: as picture shown Options: 50A Battery Voltage: 12V 24V Auto Solar Panel Voltage: 12V solar panel. 18V. 24V solar panel. 36V Float Charge: 13.7V (default. adjustable) Discharge Stop: 10.7V (default. adjustable) Discharge Reconnect: 12.6V (default. adjustable) Self-consume: <10mA USB Output: 5V / 2A maximum Package List: 1 x Controller 1 x User Manual Note: The product is a simplified version of MPPT.