1、Innovative MPPT Technology: This solar charger controller utilizes innovative MPPT technology with a tracking efficiency of up to 99% and a peak conversion efficiency of up to 98%. 2、Programmable LCD Display: This solar charger controller features a programmable LCD display with clear backlighting for clearer operation. 3、Good Heat Dissipation: This solar charger controller is designed with multiple pronged edges, which increases the heat dissipation area and has good heat dissipation performance. 4、Multiple Protection Functions: This solar charger controller has multiple protection functions, such as overcharging and over discharging protection, short circuit open circuit reverse connection protection, over current protection, overheating temperature protection. 5、Wide Application: This solar charger controller has a wide range of applications and can be used for RVs, trailers, boats, ships, campgrounds, homes. Item Type: MPPT Solar Controller Material: Aluminum Alloy No Load Loss: ≤0.4W Conversion Efficiency: ≤98% MPPT Tracking Efficiency: ＞99% Temperature Compensation Coefficient: -2mv/℃, 2V Default Value Operating Temperature: -10℃-65℃ Protection Grade: IP21 Battery Compatibility: Comply with EN61000, EN55022, EN55024 Altitude: ≤3000m 1 x MPPT Solar Controller 4 x Screw 4 x Expansion Tube