Feature: 1. High Efficiency: The maximum power tracking algorithm is adopted to significantly improve the energy efficiency of the system, and the charging efficiency is 30% higher than that of PWM mode. 2. Widely Use: Energy controller can be used for household, base station, off‑grid, power station, rv, yacht, ship and other solar systems. 3. Charging Current Limiting: When the charging current is higher than the rated value, the controller automatically reduces the charging power to make the solar panel work at the rated charging current. 4. Temperature Detection: Built in temperature detection, derating charging, no fan required, stable operation in extreme temperature environment. 5. Compatible With Various Batteries: Support a variety of lead acid batteries and lithium batteries, users can customize the charging parameters. How to Use: After installation and fixation, connect the battery and solar panel before use. Specification: Item Type: Solar Charge Controller Material: ABS Charging Type: MPPT Rated Voltage: DC 12V/24V AUTO Charging Current: 30A Discharge Current: 20A Rated Power: 12V/400W; 24V/800W Operating Temperature: -35℃ - +45℃ Protection Level: IP32 Communication Mode: RS485 Conversion Efficiency: ≤98% MPPT Tracking Efficiency: > 99% Altitude: ≤3000M Applicable Scenarios: Household, base station, off-grid, power station, rv, yacht, ship and other solar systems Package List: 1 x Solar Charge Controller 1 x Manual 1 x Wiring Harness