Portal 2 trailer introduces the consumer version of the sentry turret

A new trailer for Valve's upcoming puzzle sequel Portal 2 features Aperture Laboratories founder Cave Johnson revealing the consumer-grade version of the company's sentry turret line.

Watch as Johnson breaks down the manufacturing process, recommended set-up procedure, and the lovely line of colors and skins available for your new household safety preservation unit.

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Portal 2 launches for the PC, Mac, PS3, and Xbox 360 on April 19.

For more on Valve's upcoming title, make sure to check out our recent preview of the game's single-player mode and PAX East 2011 interview with project lead Joshua Weier and writer Erik Wolpaw.