Wayne EEAUP250 1/4 HP Reinforced Thermoplastic Submersible Multi-Use Pump, 1, Black

Plug in and leave the pump unattended for worry-free water removal. Ideal for crawl spaces, flat roofs, window wells and other problem areas around the home where water accumulates.
Troubleshooting:
Primary causes for malfunction impacting the automatic switching function:
o A clogged vent hole (small debris, seeds, pine needles)
o A contaminated switch housing (algae, slime or other materials accumulated on the switch underside).