Products Features 1. Input & output fully insolated 2. High Surge: High surge current capability starts difficult loads such as TVs, camps, motors and other inductive loads 3. Soft start: Smooth start-up of the appliances. 4. Pure sine wave output waveform: Clean power for sensitive loads. 5. AC output identical to, and in some cases better than the power supplied by your utility 6. Cooling fan in the inverter is thermally activated and comes on when the inverters becomes warm, and turns off automatically after the inverter has cooled. 7. Low total harmonic distortion: Below 3% 8. Two LED indicators on the front panel shows the working and failure state. Protection Function 1. Low voltage alarm & Shutdown 2. Over-voltage protection 3. Overload protection 4. Over-temperature protection 5. Short circuit protection 6. Soft start 7. Auto. Reset after being in protected 8. Grounding protection 1pcs/box, unit box size56*23*14.8cm,N.W5.1kg, G.W5.4kg 4pcs/CTN, carton size58*48*32.5cm, N.W21.6kg, G.W26kg