The 900S "Automatic" model pumps when water is sensed in the bilge, and does not require a separate float switch. It also has a second "water depth" mode which activates the pump when the bilge water level reaches 2" or 1.3".

These pumps feature a threaded discharge nozzle, and multiple discharge ports are included with the pump — 3/4", 1", and 1-1/8" straight hose barbs; as well as a 3/4" 90° elbow port.