1. Equipped with high-tech intelligent chip, USB intelligent shunt, the temperature of inverter reaches 45 degree Celsius, and the temperature control fan stats automatically. 2. 4 USB charging ports(0-2.4A) for powering USB compatible devices. 3. Two 110V AC outlets for charging larger devices such as laptops and tablets. Bulit-in 15A è?¤è?2 to protect the auto inverter and your devices. 4. Configuration of short circuit protection, under voltage protection, over-voltage protection??? over temperature protection, overload protection. 5. Parameter: Peak power: 400W Material: ABS Output voltage: 100V-120V 60Hz Input voltage: 12V USB output: 5V / 2.4A x 4, QC3.0 fast charge Continuous power: 200W max Cable length: 550mm