1、Digital Solar Charge Controller, module structure, high stability and reliability. 2、LCD equipped (backlighting) to show parameters of system running status. 3、High efficiency with by MPPT charging method. 4、Anti-reverse connection, no charging reversely while night. 5、Over-charge, limited charging current & voltage protections. 6、User can adjust setting of system parameters as over-charge voltage, recovery charging voltage, and time delay, etc. 7、Wall mounting type is easy for installation. 8、Undervoltage protection function can effectively protect battery over discharge. 9、Input voltage 12v/24v/36/48v automatic identification, automatic switching. 10、This product can realize functions such as monitoring and transmission. 1 x MPPT Solar Controller Item Type: MPPT Solar ControllerMaximum Achievable Operating Current: 50APower: 2KW Model FSCM-122448–A-HA VOC of PV arrays (suggestion) ≤48V (24V) ≤96V (24V) PV input Vol. Max. 150V Rated charging current [A] 20A  30A  40A Rated battery vol. 12V 24V 36V 48V Over-charge vol. 15V 30V 45V 60V Floating charge 14.4V 28.8V 43.2V 57.6V Over-charge recovery vol. 13.5V 27V 40.5V 54V Over-discharge vol. 10.5V 21V 31.5V 42V Over-discharge recovery vol. 12V 24V 36V 48V Rated DC-output current 10A DC-output current Max. 20A Self-consumption (day) ≤30mA backlight off Self-consumption (night) ≤20mA backlight off Ambient temperature -25℃ ～ +50℃ Altitude work [m] ≤2000 Humidity 85%. NC （25℃±5℃） Data-transfer port tRS485 Protection class IP55 Net weight [Kg] Weight: 2.1 kg / 4.6 lb(approx.) Material Aluminum Alloy