The PWM Solar Charge Controller supports 12V/24V automatic system voltage identification. It features multiple working modes and is suitable for both residential and commercial applications. Note: Size and color may vary slightly due to manual measurement and lighting conditions. Specifications: - Rated Current (Charging/Load): 40A/50A/60A/80A (Optional) - Color: Black - Material: ABS; Aluminum Alloy - Display: Digital LCD Screen - System Voltage: 12V/24V Auto - Charging Mode: PWM - Overload Protection: 1.25 x Rated Current, 60 seconds; 1.5 x Rated Current, 5 seconds - Short Circuit Protection: 3 x Rated Current - No-load Loss: 15mA - Charge Loop Drop: 0.26V - Discharge Loop Drop: 0.15V - Over-voltage Protection: 17V; 24V - Working Temperature: -35°C to 55°C - Boost Charging Voltage: 14.6V; 24V - Direct Charging Voltage: 14.4V; 24V - Float Charging Voltage: 13.6V; 24V - Charging Recovery Voltage: 13.2V; 24V - Temperature Compensation: -5mV/°C/2V - Under-voltage Voltage: 12.0V; 24V - Over-discharge Voltage: 11.1V; 24V - Over-discharge Recovery Voltage: 12.6V; 24V - Item Size: 190 x 130 x 60mm / 7.48 x 5.12 x 2.36in - Installation Size: 178 x 97mm / 7.01 x 3.82in - Package Size: 21 x 14 x 7cm / 8.27 x 5.51 x 2.76in - Package Weight: 612g / 1.35lbs Package List: - 1 x PWM Solar Charge Controller - 1 x User Manual (English)