Feature: 1. Data Display: The screen display is rich in content. All the various real time data are displayed on a display for easy user inspection. 2. Low Power Consumption: The power supply adopts ultra low power consumption chips to reduce static standby power consumption and energy consumption. 3. Dual Period Control Mode: USB 5V output for mobile phone and fan charging, dual period control mode, excellent heat dissipation performance. 4. MPPT Technology: The solar controller adopts MPPT technology. The MPPT controller can exert the maximum power of the battery board, so it can provide a larger charging current. 5. Application: This solar controller automatically detects 12V and 24V system voltage, widely used for RV, commercial vehicle, boat, yacht. Specification: Item Type: Solar Charge Controller Material: Aluminum, ABS Gross Weight: 326g / 11.5oz Product Size: 14.3x8.7x4.5cm / 5.6x3.4x1.8in Voltage: 12V 24V M20A Style: 260W (12V) 520W (24V) Operating Temperature: -10℃-60℃ Storage Temperature: -30℃-70℃ Application: Solar controller. Package List: 1 x Solar Controller5 x Expansion Tube5 x Short Screw5 x Long Screw5 x Nut1 x Instruction Manual1 x DC Head