Industrial-grade main control chip and large LCD screen for adjustable charging and discharging parameters. Features overcurrent, short circuit, open circuit, and reverse connection protection with self-resetting capability. Complete 3-stage PWM charge management with dual MOS anti-backflow circuit for ultra-low heat generation. System voltage is 12V/24V adaptive with dual USB interfaces for convenient and safe use. Stable performance and high accuracy, suitable for circuit protection in homes, industries, and commerce. Item Type: Smart Charge Controller Material: ABS System Voltage: 12V 24V adaptive Rated Charging Current: 20A Rated Discharge Current: 20A Max PV Voltage: <50V Float Voltage: 13.7V (default, adjustable) Discharge Cut-off Voltage: 10.7V (default, adjustable) Discharge Recovery Voltage: 12.6V (default, adjustable) USB Output: 5V 1A Standby Current: <10mA Working Temperature: -35℃ ~ 60℃ Package Includes: 1 x Photovoltaic Charge Controller, 1 x User Manual