If you're towing a trailer with a gross trailer mass (GTM over 750kg, you'll be in need of a trailer brake controller. The Hayman Reese Guardian Brake Controller is a solid-state timed brake controller suitable for light caravan and camper applications of anywhere from 1 to 4 axles. This super easy to install system features Plug & Tow technology, with a preassembled wiring harness and a snap in dash cradle. The solid state construction means no moving parts or pendulums allowing this controller to be mounted on any angle within easy reach of the driver. Designed for use on 12V negative ground systems, the controller has an easy to read LED screen with soft touch manual controls for easy adjustment of brake timing and strength.