Customized Pure Sine Wave Inverter Size: Smart series pure sine wave inverter 300W Product Features: 路Anodized alluminum case provides durability max heat dissipation 路DC cigarette lighter accessory plug and heavy -duty cable clamps for high-output direct battery connections both included. 路Automatic restart function. 路USB output port : 5V500mA (optional ) 路ON/OFF switch control the inverter by hand 路The inverter is compact , light weight and easy to operate. 路Loads can be powered directly from the AC outlets. 路The inverter is equipped with numerous protection features to guarantee safe and trouble-free Smart series pure sine wave inverter 500W Protection Function: 路Low voltage alarm Shut down 路Over voltage protection 路Overload protection 路Over temperature protection 路Short circuit protection 路Reverse Polarity protection 路Soft start 路Auto.reset after being in protectedCustomized Pure Sine Wave Inverter website:http://www.zcscitech.com/sine-wave-inverter/pure-sine-wave-inverter/