Feature : 1. Suitable for 12V 24V 36V 48V system. Used in lithium batteries and accumulators. Intelligent heat dissipation electric fan, turns on when the temperature is over 45 ℃, turns off when the temperature is below 40 ℃, saves electricity. 2. The PV and the battery have two wire terminals on the positive and negative terminals respectively. Given the high cost of thick wire, two thin wires can be used instead. The surface is highly porous and has good heat dissipation performance. 3. The screen is backlit, from full backlight to half backlight for approximately 1 minute 30 seconds, and half backlight for 5 seconds, saving energy and meeting basic needs. Can calculate the conversion rate of the solar panel. 4. The sun icon and the direction icon are displayed for the charging state, the moon icon is displayed for the discharged state, the battery icon is displayed for the electricity. The temperature is accurate to one decimal place. Battery charging current and PV current are not much different. 5. The battery charging stage can be set to better protect the battery. The main interface cannot switch automatically, which is convenient for real-time monitoring and observation when the whole system fails. Press to enter and modify, no need to long press 5s. Specification: Item Type: Solar Charge Controller Material : aluminum alloy Application: reduce the voltage of high-voltage solar panels and charge low-voltage batteries. Widely used in RV, communication base station, home system and field monitoring and other fields. MPPT-30A mode MPPT-40A MPPT-50A MPPT-60A Charging Mode Automatic tracking of maximum MPPT power point Charging method Three stages: constant current (MPPT), constant pressure, floating charging System type DC12V / 24V / 36V / 48V Automatic identification System Identification System Voltage 12V DC9V~DC15V 24V system DC18V~DC29V 36V system DC30V~DC39V 48V system DC40V~DC60V System soft start time 12V / 24V / 36V / 48V ≤1s Dynamic response System response time 12V/24V/36V/48V 100μs Machine Efficiency System 12V/24V/36V/48V ≥98.1% Utilization rate of photovoltaic modules 12V/24V/36V/48V system ≥99% Input functions MPPT Operating voltage and range 12V PV system Open circuit voltage Recommended voltage: DC20V~DC80V 24V PV system Open circuit voltage Recommended input voltage: DC37V~DC105V 36V PV system Open circuit voltage Recommended input voltage: DC50V~DC160V 48V PV system Open circuit voltage Recommended voltage: DC72V~DC160V Maximum Input Voltage Limit (VOC) System 12V/24V/36V/48V DC190 Solar Panel Maximum Input Power System 12V 400W 480W 600W 720W 24V system 720W 720W 1200W 1440W 36V system 1000W 1000W 1800W 2100W 48V system 1200W 1200W 2200W 2800W Temperature protection 75℃/167℉ Fan opening temperature 45 ℃ / 113 ℉ Fan off temperature 40℃/104℉ Size(mm)/ Size(inch) 214x115x50/8.43X4.53X1.97 Electromagnetic compatibility Complies with EN61000, EN55022, EN 55024 IP21 housing Ambient Temperature -20℃~+55℃/-4℉~+122℉ Storage Temperature -40℃~+75℃/-40℉~+167℉ Package List: 1 x controller 4 x stand 1 x Manual 1 x Screw bag