PI2012-USB converts 12 volt DC power to standard household 110 or 220 volt AC power, which allows you to run AC electrical equipment off your car or marine battery for mobile applications, emergencies or simple convenience.

Specification:
Rated Power: 200W
Max Power:   250W
Peak Power:  500W
Input Voltage:    DC10~15V
Output Voltage: AC220V or AC110V
USB Output Voltage: 5V
Output Frequency:    50Hz or 60Hz
Converter Efficiency:  90%
No-load Current:        <200mA
Low Voltage Protection:  DC10.25V
Over Voltage Protection: DC15.25V
Overhead Protection:      >45 degree

Safety Tips:
1. Always use a power inverter that is rated high enough for the device(s) you are running and avoid adapters that would allow more outlets than the unit is designed to accommodate.

2. Power inverters work best with a battery that is in good condition and fully charged.

A weak battery will be drained easily if demands are too high. This could
Leave you stranded so be sure to check the battery's condition before using a
Power inverter in a stationary vehicle.

3. Make sure the inverter is properly ventilated. Even a small inverter generates heat. Check to see if there is an internal fan with any inverter over 100 Watts.
Place the inverter in a well-ventilated area when in use.

4. Check the owner's manual for the proper wire size for battery cables when connecting the inverter to the battery. Most manufacturers recommend 4 to 10 feet of cable length, depending on the inverter. Avoid aluminum wire because it has higher resistance to current flow than copper wire.

5. Working with car batteries can be dangerous and can result in serious injury, and improper use of a power inverter can lead to electrocution or battery failure, so for your own safety be sure to read and follow any and all safety precautions.
That are listed in your power inverter owner's manual.