In the world of trailers, we rely on technical innovations to help us, well, carry the weight. The latest one? Electronically controlled air suspension or simply E-CAS. E-CAS is the next generation of air suspension, but what is it exactly and why is it better than the old system? Well, easy. The conventional system uses a leveling valve to regulate the air suspension's bellows. Whenever the trailer's height dips too low, the leveling valve opens, allowing air pressure to enter the bellows. When the trailer reaches its riding height, the valve closes. If the trailer rises too high, the valve opens again to release pressure. Sure, the system works, but it's not only slow, you also constantly lose pressure when driving on uneven terrain. E-CAS, on the other hand, works with an electronic height sensor that sends real-time data to the trailer modulator. This unit automatically calculates whether the pressure in the bellows needs to be regulated, which ensures a more efficient suspension. The modulator can also take into account other factors, such as the wheel speed and tipping sensors. Because this modulator operates fully electronically, the system works much faster when loading your trailer. With E-CAS, you're sure of a safer, faster, and more efficient suspension system.