... FS-S613:1.ModelFS-S613(2000W) SOLAR PV POWER SYSTEM(Pure sine wave integration of controller and inverter)2. ... )7, Show light for 8.4V load(shine for working,not shine for not working)8, Show light for ... 5V load(shine for working,not shine for not working)9, Show light for ... 3.3V load(shine for working,not shine for not working) 10, USB interface for ...