ARDUINO M518 MPPT 5A Solar Controller DC-DC Step-down Module Digital CC/CV Battery Power Supply Electronic Hobby Kit

Over temperature protection: (automatically shut off the output after overtemperature) Input reverse polarity protection: None, (if necessary, please add the string into the diode) Output anti-anti-irrigation protection: no, the output must be connected to the battery plus blocking diode, otherwise it will burn the module! Charging indicator: charging red, bright green when fully charged. Turn lamp is the output current detection. Installation: 4 pcs 3mm screws