Johnson Pump 34-36303 Ultima Bilge Switch 12 / 24 Volt

Johnson Pump - 32-1900B - Electro-Magnetic Float Switch 12 Volt
Upgrade your bilge system with the Johnson Pump 32-1900B Electro-Magnetic Float Switch, engineered for dependable, automatic water level control. Built with solid-state electronics, no-mercury construction, and high-impact encapsulated components, this float switch delivers long-lasting performance in tough marine environments.
Designed to integrate seamlessly with Johnson Pump Cartridge bilge pumps, it ensures precise activation at 2" of water level and shuts off cleanly at ¾", helping prevent pump burnout and unwanted cycling.
The switch is designed to attach to the Johnson Pump Cartridge bilge pumps. When attaching to other Johnson Pump bilge pumps, use the adapter provided.
Electro-magnetic design for reliable, false-start-free operation
No mercury for safer, environmentally responsible use
High-impact plastic housing with fully encapsulated electronics for maximum durability
Automatic activation levels:
Turns on at 2"
Turns off at ¾"
Easy installation—direct fit for Johnson Pump Cartridge bilge pumps
Includes adapter for compatibility with other Johnson Pump models
Perfect for any boat owner seeking reliable bilge automation, this Johnson Pump float switch improves safety, reduces pump wear, and ensures consistent water level management. Ideal for trailer boats, cabin cruisers, commercial vessels, and more.