Rule-A-Matic Plus Automatic Bilge Pump Float Switch 40A The Rule-A-Matic Plus Automatic Bilge Pump Float Switch features a strong, fully integrated, and impact-resistant cover that protects against debris and jamming. It activates when the water level reaches 2 and deactivates when the water level falls to 34. With a built-in test feature and 14 gauge highly abrasive-resistant, marine-grade blocked wire, this bilge pump float switch offers exceptional satisfaction and long lasting use. The detac