Sauermann`s Si-30 Detect+ mini condensate removal pump is a much more reliable pump for installers! The Si-30 Detect+ contains a heavy-duty electronic detection unit for controlling on/off and alarm functions. It has been constructed without a water-based float, and this new design tolerates biofilm and reduces the need for regular cleaning, as well as lessening the potential for leaks. Easy to install with its sleek design that fits inside the unit, and very quiet in operation, this pump will give you peace and mind.