Check the listing for details. 30A PWM Solar Panel Regulator Charge Controller Auto Focus Tracking USB 12/24V. Color: Orange, Condition: New. Listed at 14.95 USD. Item number:1641Product descriptions: Type: Dual USB Solar Controller 30A Color: Orange Material: ABS Size: 25x112x34mm /4.92x3.81x1.25in Features: LCD Display Application: indoor&outdoor Voltage: 41-50 V Current Rating: 30A Operating Temperature: -35 to +60 degrees Fitment: Feature: Advanced maximum power point tracking (PWM) technology, the efficiency is not less than 99.5%. Efficiency: High-quality components improve the system performance, and the maximum conversion efficiency is 98%. Large-Screen LCD Display: charge and discharge current display, cumulative power generation, discharge power query, temperature display, light control + delay control, adjustable charge, and discharge parameters, with power-off memory, etc. Dual USB Output: The maximum current can reach 2.5A. Autofocus: tracking charging, high charging efficiency, non-stop detection. Perfect 3-Stage Charging Management: effectively protects the battery and makes the battery more durable. Update: Built-in over-current, all can self-recover without damaging the controller. Power: Anti-backflow circuit, ultra-low heat generation.Package included: 1 x Dual USB Solar Controller 30A 1 x User Manual