XO Vision XO400 400W Power Inverter Short circuit protection- Automatically shuts down until short is removed Over voltage protection-automatically shuts down when input exceeds 15 volts dc. Under voltage protection- automatically shuts down when input voltage is less than 10.5 volts Thermal protection-automatically shuts down when circuit temperature exceeds 150o F 220-Watt continuous power 400-Watt peak power 12-volt input and one 110-volt output Thermal, short circuit and over/under voltage protection Built-in high speed cooling fan