Feature: 1. MPPT Technology: Using MPPT technology, can quickly and accurately track the maximum power point of solar cell in any environment, obtain the maximum energy in real time, significantly improve the energy utilization. 2. Widely Compatible: Support full power charging and discharging at the same time, support a variety of battery types such as sealing, gel, opening, lithium battery and customization. 3. RS485 and TTL Communication: Support to save 300 consecutive days of historical data. Support RS485 communication of standard protocol, with adjustable baud rate, support TTL communication of standard protocol with fixed baud rate. 4. High Safety: Built in perfect charging and discharging protection mechanisms for overvoltage, overcurrent, overload, over temperature, short circuit, etc. Excellent aluminum heat sink and high temperature derating treatment ensure reliable and efficient operation. 5. Automatic Adjustment: Our MPPT controller can adjust the parameters according to different conditions, so that the system is always near the maximum operating point. The whole process is completely automatic without any adjustment by the user. 6. Wide Application: Widely used in solar off grid PV system to manage the work of solar panels, batteries and loads. With perfect software, hardware fault detection and protection functions, avoid the damage of components caused by installation errors and system faults. Specification: Item Type: MPPT Solar Charge Controller Material: Aluminum alloy, PC Voltage: 12V 24V 36V 48V (automatic) Battery Type: USE FLD GEL LI SLD (default) Static Power Consumption: ??50mA Working Voltage Range of Storage Battery: 8-64V Rated Charging Current: 30A Maximum PV Input Current: 27A Maximum Solar Panel Power: 400W (12V), 800W (24V), 1200W (36V), 1600W (48V) PV Maximum Open Circuit Voltage: 150V MPPT Working Voltage Point Range: (Battery Voltage+2) to 110V MPPT Tracking Efficiency: >99% Charging Conversion Efficiency: 85% to 98% (10% to of rated power) Rated Load Current: 30A Load Working Mode: Pure optical control, optical time control, manual mode (default), debugging mode, normally open TTL Communication: Baud rate 9600kps RS485 Communication: 2 isolated RS485 communication ports, which can support parallel operation, the source output is 5V 200mA, the baud rate is 9600kps by default and can be adjusted Historical Data: Can store historical data of the last 300 days Backlit Function: Light up when the key is operated, and turn off automatically after 20s of no operation Protection functions: PV overvoltage protection, PV reverse connection protection, PV short circuit protection, night reverse charging protection, input power limiting protection, over temperature protection, load short circuit protection, load overload protection, battery overvoltage or over discharge protection, battery reverse connection protection, battery terminal short circuit protection Grounding Type: Common negative pole design, negative pole grounding Working Environment Temperature Range: -35?? to 65?? (no derating within 45?? under good ventilation) Protection Grade: IP32 Cooling Mode: Natural heat dissipation. Package List: 1 x MPPT Solar Charge Controller1 x Temperature Sensor6 x Terminal1 x Manual Note: 1. As the applicable voltage of this controller exceeds the safety voltage of human body, please read the instructions carefully before operation and operate this controller only after the safety operation training is completed.