Draw-Tite 5535 Trailer Brake Control (I-Command Electronic - Proportional)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Requires no leveling with "up-front" buttons for easy access to Output and Boost， easily controls trailers with up to 4 axles</li><li>Proportional brake control means sure， even stopping power</li><li>Boost feature gives the ability to apply more initial trailer braking when road conditions warrant</li><li>Diagnostic features incorporated in LED display for easy review; reverse battery protection; automatically achieves proper level and compensates for uphill/downhill travel</li><li>Plug and play feature allows for quick and easy connection; bracket， mounting hardware， and comprehensive instructions included</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41oD2DrEhCL.jpg" noproxy>