1Mppt Design: Significantly improve the energy efficiency of the system, and the charging efficiency is 30% higher than that of the Pwm method, effectively provide you with more convenience. 2High Performance: Locate better working point of the I?V curve at a high speed, faster response and higher tracking efficiency. The Mppt tracking efficiency is as high as 99.9%, and the circuit energy conversion efficiency is as high as 98%. 3Comprehensive Electronic Protection Function: Battery reverse connection protection, Pv reverse connection protection, Pv short circuit protection, charging overcurrent protection. 4Support for Modbus Protocol: Meet the communication needs of a variety of environments and occasions. Solar energy systems such as households, power stations, off?grid, base stations, RVs, yachts, ships, etc. can be used. 5Data Viewing: You can connect an external Lcd screen (not included) or Bluetooth module (not included) to view the operating data and status of the device, and support to modify the controller parameters. 6Built?in Temperature Detection: Through derating charging, no fan is needed, and stable operation is still maintained under extreme temperature environments. Support a variety of batteries, users can customize charging parameters. 7Current Limiting Charging: When the power of the solar panel is too large and 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.