Looking for the best brake controller on the market? The REDARC Tow-Pro Elite is the only brake controller on the market with 2 types of braking modes at the turn of a dial and comes with a free switch insert panel (TPSI-001) to suit most vehicles. ?Proportional Mode' (Inertia sensing) for highway conditions and ?User Controlled Mode' for all terrain conditions. You can choose what braking type best suits the road conditions, vehicle type or driver preference, and the Tow-Pro Elite is suitable for 12 and 24-volt systems. This model features a three-axis accelerometer which can measure acceleration in any direction. The main unit can be mounted in any orientation, out of sight and still sense the brake level accurately. The SEMA Global Media Award winning Tow-Pro Elite also comes with self-levelling technology, so it can sense the rate of deceleration and features active calibration, which constantly monitors the vehicles direction of travel, with or without a trailer attached. The REDARC Tow-Pro Elite control knob is designed with low profile and shock-absorbing elastomers ensuring it can be installed in crash impact zones, and all Tow-Pro Elite purchases come with a free universal pig-tail wiring harness included as standard.