Feature: 1. Automatic Identification: 12V/24V system voltages are automatically recognized. An upgraded 3‑stage PWM charging algorithm is adopter. Application of an equalizing charging to the battery periodically or when over discharged, can effectively prevent the battery from non‑equalization and sulfuration. 2. Automatic Temperature Compensation: With temperature compensation employed, charging parameters can be automatically adjusted. A wide range of load working modes facilitate the product's application to different types of load. 3. Multiple Protection: The PWM solar charge controller provides overcharge, over‑discharge, overload protectiong, as well as short‑circuit protection, thus extending the battery's service life. Compatible with colloidal battery, sealed battery, open battery, lithium battery. 4. Easy Operation: By virtue of an advanced load startiong method, large‑capacitance loads can be started smoothly. The product provides a dot matrix graphic LCD screen and a human‑machine interface with a key. The user‑friendly design of browser and dynamic interfaces ensure convenient and intuitive operations. 5. Wide Application: Boastiong an industrial grade desing, the solar charge controller can function well in various tough conditions. TVS lightiong protection is adopted. Suitble for solar photovoltaic systems such as home power generation, base stations, RVs, yachts, ships, etc. Specification: Item Type: Solar Controller Colour: Black Material: ABS Charging Type: PWM USB: 5V/1A (1) Rated Current: 30A Rated Power: 12V/450W; 24V/900W System Voltage: DC 12V/24V automatic identification No-load Loss: <13mAh/12V; <15mAh/24V Solar Input Voltage: <55V Maximum Allowable Voltage At Battery Terminal: <34V Overvoltage Protection: 17.0V; x2/24V Equalization Charging Voltage: 14.8V; x2/24V Boost Charging Voltage: 14.6V; x2/24V Floating Voltage: 13.8V; x2/24V Charging Return Voltage: 13.2V; x2/24V Over-discharge Return Voltage: 12.6V; x2/24V Over Discharge Voltage: 11.1V; x2/24V Equalizing Charge Interval: 30 days Equalization Charging Time: 1H Improve Charging Time: 2H Temperature Compensation: -3.0mV/℃/2V Light Control Voltage: Light control on 5V; light control off 6V set value plus 1V (x2/24V) Light Control Judgment Time: 1 minute Working Temperature: -25℃—+55℃ Protection Level: IP30 Applicable Scenarios: Solar photovoltaic systems such as home power generation, base stations, RVs, yachts, ships, etc.. Package List: 1 x Controller1 x Manual