Attwood 42027 Auto Float Switch Only 12V +
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Attwood 42027 Auto Float Switch Only is designed to help convert compatible bilge pump setups to automatic operation. This sealed, mercury-free float switch features an integral cover to help manage bilge sloshing and debris interference for more consistent switching.
Key Features
- Mounts on any surface from horizontal up to a 24° angle
- Wire leads do not flex or hinge with the float like some competitive models
- Integral cover helps dampen bilge sloshing and filters debris
- Sealed switch mechanism resists moisture, fume-ignition, and electrical shock
- Mercury-free design
- 3-Year Warranty
Product Compatibility
- Marine bilge pump systems (as an automatic float-switch conversion component)
- Use with 12V pump circuits where an auto float switch input is required
- Use in bilge compartments where moisture resistance and sealed switching are required
Product Details
- Auto Float Switch (Switch only)
- Model / Switch number: 42027
- SKU: 23-42027
- Voltage: 12V
- Manual-to-automatic style installation for compatible bilge pump setups
- Mounting angle range: horizontal up to 24°
- 3-Year Warranty
Parts Desk Insights
Best Use Case: Ideal as a sealed, mercury-free float switch option when you’re upgrading a bilge pump arrangement and want the switch to resist moisture and debris effects.
Common Issues: If the float does not actuate reliably, check that the switch is mounted within the recommended angle range, confirm the float moves freely without obstruction, and ensure debris doesn’t interfere with the float cover/area around the switch.
Related Products & Accessories
- Browse Bilge Pumps & Switches - Explore additional bilge pump and switch components that may pair with your pump setup.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.