After having the Smart Air on one truck, and now the Wireless One on this truck, I've noted that the wireless one will maintain pressure to the selected pressure, rather than just pump it up and forget it. I didn't realize it would do that until after I installed and had a small leak. Every few minutes, the pump would start and readjust. Not the same as the Smart air that works on a magnet switch that maintains a preset level, but maintaining a preset pressure is the next best thing.