Why it matters
The BWC1 has two floats: if the first fails to start the pump, the second does. The large floats react to a 1/4 in rise, and a protective cage keeps debris and wires from jamming them.
After the water drops, it runs the pump for an extra 10 seconds to empty more of the pit. It replaces piggyback switches on most sump pumps and carries a two-year warranty.
Who it's for, and who should skip it
Good fit if
- Owners who've had a float fail
- Busy pits
- Most piggyback-ready pumps
Look elsewhere if
- Very narrow pits
- Sewage basins
Pros and cons
Pros
- Failsafe second float
- Debris cage
- 10-second run-on
Cons
- Bulkier than one float
- Plastic body
- Check pump compatibility
Limitations to weigh
- Check the switch's amp and horsepower rating against your pump's nameplate before plugging it in.
- Piggyback switches plug into the outlet and the pump plugs into them; set the pump's own switch to manual or remove it, per the pump maker.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Plastic | Retailer |
|---|---|---|
| Dimensions (seller) | 2.13"L x 2.13"W x 6.82"H | Retailer |
| Product weight | 1.2 lb | Retailer |
| Model number | BWC1 | Retailer |
| Warranty | 2 Year Warranty | Retailer |
Alternatives worth comparing
More sump pump accessories we cover
- Superior Pump 92005 Tethered Float Switch (25 ft)
- MOKYDUO Z2PRO Wi-Fi Sump Alarm
- Proteus L5 Wi-Fi Water Level Monitor
- Superior Pump 92060 Sump Alarm
All sump pump accessories, compared in one table · Every Basement Watchdog product we cover
Final verdict
Worth it to take float failure off the table.
Where to buy
Our links open this exact model's product page. Prices and stock change; check what's included before you order.
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure


