MPPT 12V24V Automatic Identification Solar Controller With USB Output, Model: 40A Features: 1. Stable performance: Built-in industrial microcontroller, it can run stably in cold, high temperature and humid environment. 2. The 12V24V voltage can be automatically identified and intelligentized, providing more convenience for your life. 3. Large LCD display: to ensure simple and intuitive operation. 4. Dual USB output: easily connect to the mobile phone, you can quickly and powerfully charge the mobile phone. 5. Comprehensive protection: provide overcharge, overdischarge, overload protection and short circuit and reverse connection protection. 6. Wide load work: easy to apply to different types of street lights and monitoring equipment. 7. Wide range of applications: used for solar green light, solar billboards, solar insecticidal lights, solar power systems, ship solar power systems, solar power systems, etc. parameter: 1. Rated charging current: 30A 40A 50A 60A 2. Rated load current: 30A 40A 50A 60A 3. Working voltage: 12V 24V 4. Floating charging voltage: 13.8V 27.6V (adjustable) 5. Undervoltage protection: 10.7V 21.4V (adjustable) 6. Charger controller specification charging method: 3 kinds 7. Working temperature: 35-60 degrees Celsius 8. Storage temperature: 40 -70 degrees Celsius