Features: This solar charge controllers is suitable for both 12V and 24V power system. Double USB port allow for easy and convenient charging of your devices. Monitors the charging status and voltages on the LCD display for improved control. Equipped with necessary protections devices, the control parameters of system is adjustable, easy to set up and operate. Builted in overheating, overcurrent, short circuits, open circuits protections, fault elimination, controllers automatic recovery. Specifications: Materials: ABS and metal Current: 10.0A/20A/30.0A (optional) System voltages: 12V/24V USB output: 5V/2A Await current: ＜10mA Working temperature: -30 ℃~60 ℃ Discharge deadline voltages: 10.7V (adjustable) Discharge recovery voltages: 12.6V (adjustable) Size: about 13.5x7x2.50cm/5.31x2.76x0.98inch Package Includes: 1pc Solar Charge Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.