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Basement Sentry 1/3 HP 2400 gph Thermoplastic Vertical Float Switch AC Submersible Backup Sump Pump

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Keeps pumping when the power doesn't - a 12V battery backup pump rated for 2400 GPH to protect your basement during outages.
Basement Sentry MPN STBC101 In Stock & Ready to Ship
$359.99
Free shipping on orders over $249
Only 12 left
Ships within 24 hours · most orders arrive in about 2 business days
Ships free on orders over $249 $24.99 flat shipping until your order reaches $249.

About Product Overview

The Basement Sentry 1/3 HP Sump Pump is built to take over when your primary pump can't - whether that's from a power outage or a main pump failure. Running on 12 volts, it's designed to work off a backup battery system so your basement stays dry even when the electricity doesn't. A vertical float switch triggers it automatically as water rises, and the bottom suction intake pulls water efficiently without needing constant adjustment.

With a maximum discharge of 2400 GPH and up to 15 feet of head, it has the muscle to keep pace with a fast-filling sump pit. The thermoplastic housing resists corrosion better than metal, which matters for a pump that sits submerged and ready to run at a moment's notice. CSA compliance and a 1-year warranty back it up, and it's made in the USA.

  • 1/3 HP motor, 2400 GPH maximum discharge
  • Runs on 12 volts for battery backup operation
  • Vertical float switch for automatic activation
  • Bottom suction intake, thermoplastic housing
  • Maximum head height: 15 feet
  • CSA compliant, 1-year warranty, made in USA

The Details Specifications

Brand Basement Sentry
Model / MPN STBC101
UPC 054757101350
Weight 25 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Basement Sentry. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · Basement Sentry

Or skip the tabs entirely and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

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