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Description
Attwood Bilge Switch S3 Series - 12V [4801-7]Automatic Bilge Switch S3 Series Part #: 4801 7 Incorporates a proprietary Electronic Sensing technology to detect bilge water levels and trigger pump activation and has been engineered to operate in any bilge water mixture consistently without failure. Your pump won't be exposed to continuous cycling as the S3 switch can easily distinguish splashing bilge water, chemicals, sludge build up or foam and comes equipped with fully sealed electronics that
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.3 ★★★★★
Based on 790 reviews
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Product Reviews
★★★★★ 5
Cleaner Desk
Love this. My hub and wires are out of the way and it looks so much cleaner on my desk!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
Easy to install for clean under-desk mounting
Fits my Dell WD19TB dock perfectly. Great for under-desk mounting (just be careful if your desk surface isn't super thick - you may not want to tighten the screws all the way)
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Reviewed in the United States on December 11, 2025
★★★★★ 5
Space Saver
Perfect fit and easy install. Made more space for my desk within minutes.
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Reviewed in the United States on December 5, 2025
★★★★★ 4
Overall great
I LOVE IT. omg exactly what I was looking for. Easy to set up. The only issue is you have to bend over/kneel to set it up and in the process I got an upset stomach, which is why deducted one star. So if you have bowel issues like me, you might want to consider that with this product.
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Reviewed in the United States on February 3, 2026
★★★★★ 5
right size for your dock.
Fit perfectly. Everything is nice and neat.
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Reviewed in the United States on December 14, 2025
