Shurflo Caged Automatic Bilge Pump Switch This Shurflo Caged Automatic Bilge Pump Switch will activate when the water level reaches 1-34 and will deactivate when the water level reaches 34. It features a manual test feature, 3 tinned wire assembly and remote or direct mounting. Used for bilge water evacuation, this bilge pump switch will provide the ultimate in reliability for your boat. It is recommended that you mount your switch horizontal for maximum performance. Features 3 Tinned Wire Assem