The controller is a PWM charge controller with an LCD display and state-of-the-art digital technology. A variety of load control modes make it possible to be widely used in solar home systems, traffic lights, solar street lights, solar garden lights, and so on. Features: The high quality components of ST are used to ensure long-term use of the product. The controller can operate at full load in the ambient temperature range of -15-50 °C. Configured with 3 levels of intelligent PWM charging: bulk, boost / equalization, floating charge. Support 4 charging options: Sealed, Gel, Flooded and User The LCD display design dynamically displays the operating data and operating status of the device. Dual USB design, power charging for electronic devices. User-friendly button settings make the operation more comfortable and convenient. Configure multiple load control modes. Battery temperature compensation. Specifications: Condition: 100% Brand New Material: ABS Voltage: 12V/24V Maximum Generating Current: 30A Self Loss: ≤13MA Charging Mode: PWM Working Temperature: -20°C ± 55°C Waterproof Level: IP32 Weight: approx. 411g / 15.5oz Size: approx. 18.7*9.5*4.9cm / 7.4*3.7*1.9in Package list: 1 * Solar Controller 1 * Instruction Manual Note: 1.Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.