Industrial-grade main control chip for superior performance and durability. Large LCD screen displays adjustable charging and discharging parameters with memory function. Complete 3-stage charging management for optimal performance. Built-in overcurrent, short-circuit, open-circuit, and reverse connection protection (self-resetting, won't damage the controller). Dual USB output, up to 2.5A max current, dual MOS anti-backflow circuit, ultra-low heat generation. Floating charging voltage: 13.7V (default, adjustable range: 12.7-15V) Discharge cutoff voltage: 10.7V (default, adjustable range: 9-11.3V) Discharge recovery voltage: 12.6V (default, adjustable range: 11.5-13V) Charging recovery voltage: 13V Light control threshold: 8V photovoltaic panel (delay when light is on) Light control threshold: 8V solar panel (delay when light is off) Standby current: <10mA USB output: 5V/2.5A Maximum Operating temperature: -35-60 ℃ Optional rated current: 10A, 20A, 30A, 40A, 50A, 60A Size: Approx. 133 x 70 mm/5.2 x 2.8 inches Includes: 1 x Solar Charge Controller 1 x Instruction Manual Your 100% satisfaction is our top priority. We're committed to providing excellent service. If you encounter any issues upon receipt, such as damage or incorrect quantity, please contact us immediately for a prompt resolution.