I've tried some motion sensing and the false positives are almost as bad as the missed ones. There's too many other things in our house that could likely cause enough vibration to cause them to trip. I went down this road for some exhaust fan monitoring and discovered the fun of truck traffic, slammed doors and other outside factors causing false triggering.
Pressure switches, though, I have not looked into those. Not sure how effectively I could monitor the ejection pipe for pressure changes without introducing yet another maintenance item. It'd be less trouble to move to a different sump pump setup that had other contact closure options.
