How could I use this in a window well? It fills with water and into are basement if we don’t catch it in time.

If you have a manually operated pump, you can use this controller to activate that pump when there is ¾” of water or more. For more information please contact our customer support team at 800-991-0466, option 3. We are available to take incoming calls from 9am – 5pm CT Monday through Friday.