Suitable for solar green light, solar light boxes advertising board, solar insecticidal lights, housing solar generation system, marine solar generation system, outdoor survival solar generation system. Features: Build-in industrial micro controller. One-key setting, digital display, auto memory function. Fully 3-stage PWM charge management. Build-in short-circuit protections, open-circuit protections, reverse protections, over-load protections. Dual mosfet reverse current protections, low heat productions. With double USB ports charge. Specifications: Main color: black Main material: ABS Rated Voltage: 12V/24V AutoApplication: Solar System Controller Rated Current: 10A, 20A, 30A (optional) Max. PV Voltage: 50V Max. PV Input Power: 10A: 130W (12V) 260W (24V) 20A: 260W (12V) 520W (24V) 30A: 390W (12V) 780W (24V) Item size: 150 * 78 * 35mm / 5.9 * 3.1 * 1.4in Item weight: 155g / 5.5ounce Package size: 200 * 100 * 90mm / 7.9 * 3.9 * 3.5in Package weight: 155g / 5.5ounce Package List: 1 * Solar Panels Battery Charge Controller