What this product does Automatically detects and configures 12 V, 24 V, 36 V and 48 V systems so you do not need to set voltages manually. This reduces installation errors and gets the system running faster. Accepts photovoltaic input voltages up to 100 V and supports high input power up to 4800 W, so it works with larger PV arrays and higher-power installations. Provides precise light control by switching between day and night modes with a 10-minute delay to avoid false switching at dusk/dawn and to optimize battery and solar energy use. Includes two 5 V USB charging ports for convenient device charging while maintaining efficient use of solar energy. Key benefits (why you need it) Faster, simpler setup: automatic voltage recognition eliminates the need for manual configuration and the risk of choosing the wrong system voltage. Works with high-voltage PV arrays and higher power inputs, making it suitable for more demanding or expandable solar systems. Smarter lighting control conserves battery capacity and prevents rapid on/off cycling caused by transient light changes. Built-in USB charging adds convenience for phones, tablets, and other small devices without interfering with primary solar/battery management. Compatibility and performance Designed for common off-grid battery voltages: 12 V, 24 V, 36 V, and 48 V. Handles PV input up to 100 V and input power up to 4800 W — compatible with medium-to-large solar array configurations. Day/night switch uses a 10-minute delay for stable, predictable lighting behavior that improves overall system reliability. Practical applications (use scenarios) Solar street or pathway lighting: automatic day/night switching with delay prevents flicker at dusk and preserves battery life while supporting higher-power solar arrays. Off-grid cabins, remote buildings, and small commercial installations: supports larger PV inputs and common battery voltages, simplifying system design and installation. RVs, boats, and mobile power systems: automatic voltage detection and dual USB ports provide dependable charging and lighting control without complex setup. Why it stands out Combines wide PV input tolerance and high input power capacity with automatic voltage recognition and intelligent light control, delivering a solution that fits a wide range of solar-powered applications while reducing setup time and operational issues. Specifications (as provided) Automatic detection: 12 V / 24 V / 36 V / 48 V systems PV input voltage: up to 100 V Supported input power: up to 4800 W Light control: day/night switching with 10-minute delay USB outputs: two 5 V ports for device charging