Built-in cooling fan.
Converting efficiency: 85%.
Continued power: 400W.
No load current draw: 0.2amp, Low voltage alarm: 10.5v+/-0.5v.Low voltage shut down: 10.0v+/-0.5v. High voltage shut down: 15.5v+/-0.5v. Built-in cooling fan. Input voltage range: 10v 15.5v (+/-0.5v). Output voltage: 115V +/-5V. Converting efficiency: 85%. Low voltage / high voltage / overload / thermal protection circuitry. Continued power: 400W. Surge power:800W. Dimension: 7.28''L x 4.33''L x 2.28''H.