Product Details: The WABCO 2S/1M TCS II Trailer ABS Electronic Control Unit (ECU) ensures you Ready for the Road Ahead™, having a better-than-OEM design. This ABS ECU reliably intervenes when wheels are about to lock and adjusts the brake pressure accordingly. As a result, you receive proper trailer stability regardless of load or road conditions. This heavy duty ABS ECU applies necessary brake control that you can rely on to ensure vehicle safety. FleetPride is your First Click in Heavy Duty®.