Upgrade your boat’s bilge system with the Attwood Automatic Float Switch. Model 4202-7 is a reliable, proven, and affordable mechanical float design that converts manual bilge pumps into automatic operation. This 12/24VDC switch is mercury-free, sealed to resist moisture, and built to endure harsh marine conditions.

Designed to be mounted on any surface from horizontal up to a 24° incline, it activates the pump at 2 inches of water, helping prevent flooding without constant monitoring. The integral cover dampens bilge sloshing to reduce pump cycling, contributing to longer pump life and quieter operation. A test knob provides an easy manual check to ensure proper operation.

Sold without a cover, this switch is the affordable choice for upgrading Attwood and other non-automatic electric bilge pumps to automatic safety. It is backed by a three-year warranty for peace of mind.

Key Features

• Automatic operation — converts manual pumps to automatic safety with a simple, reliable float mechanism.
• Mercury-free and sealed — environmental and moisture-resistant design.
• Low-profile, compact — minimal space requirements on any mounting surface.
• 2" activation — triggers pump precisely when needed to prevent flooding.
• Easy testing — built-in test knob for quick checks.
• Wide voltage compatibility — 12V and 24V input.

Specifications

• Amperage capacity: 12 A
• Dimensions: 2 5/8" H x 3 7/8" W x 4 1/4" L
• Input voltage: 12V or 24V
• Model: 4202-7