... .Strong protection 3.3 years warranty 4.OEM solar inverter with solar controller 1000W-4000W Brand:WELLSEE Dimension:400*180* ... . focuses on the research, developments and productions of PV products. Wellsee Solar Inverter with built-in controller WS-SCI series ... various sensitive loads, such as motor, air conditioner, electric drills, electric fluorescent lamp, gas lamp, etc;7) Perfect protection ...