---
product_id: 2464695
title: "Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1)"
brand: "the basement watchdog"
price: "₩148069"
currency: KRW
in_stock: true
reviews_count: 8
category: "The Basement Watchdog"
url: https://www.desertcart.kr/products/2464695-universal-dual-float-switch-replaces-piggyback-sump-pump-switches-bwc1
store_origin: KR
region: South Korea
---

# 10-second pump run delay Detects ¼-inch water rise Dual float failsafe system Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1)

**Brand:** the basement watchdog
**Price:** ₩148069
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay worry-free: The ultimate sump pump switch that never quits!

## Quick Answers

- **What is this?** Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1) by the basement watchdog
- **How much does it cost?** ₩148069 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/2464695-universal-dual-float-switch-replaces-piggyback-sump-pump-switches-bwc1)

## Best For

- the basement watchdog enthusiasts

## Why This Product

- Trusted the basement watchdog brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Float Safety Net:** Second float ensures pump activation even if primary fails—peace of mind guaranteed
- • **Extended Pump Runtime:** Runs pump an extra 10 seconds to fully clear sump pit, avoiding residual water
- • **Debris-Resistant Design:** Protective vented cage minimizes debris buildup, keeping your system clog-free
- • **Universal Compatibility:** Fits most sump pump brands—upgrade your flood defense without hassle
- • **Precision Water Level Detection:** Activates pump at just ¼-inch water rise for early flood prevention

## Overview

The Basement Watchdog Universal Dual Float Switch (BWC1) is a reliable, easy-to-install sump pump accessory designed to detect minimal water level rises and activate your pump promptly. Featuring a dual float system for fail-safe operation, a protective cage to prevent debris interference, and a 10-second extended pump runtime, it ensures efficient water removal and long-term durability compatible with most sump pump models.

## Description

The Basement Watchdog Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1) - Sump Pump Accessories - desertcart.com

Review: Great product - This is a great product we have had it for over a year now. We've had multiple power outages, and it's not short-circuited and stopped working. We do have it on a search protector but we have several others in the past. That tore up a lot quicker. So this product is reliable. We haven't installed in our basement for our sump pump
Review: So Far so Good, and still good, and a life saver after 7 years!! - So far this unit works perfectly. I have had water issues for many years on and off due to faulty pump switches and switch systems that stick in the on or off position. After doing a lot of research I found that there are no integrated pump switch systems that are completely reliable. Plumbers have fixes similar to this one that cost anywhere from $100 TO $300. But this solution thus far is the most elegantly simple, low cost and about the only thing that I can see that might fail is the electronics that turn the pump timer on and off. I have had this unit in for about 6 weeks and so far so good it works every time. It's been almost a year now and this switch is still working well, it has saved me a lot of worry and I trust it to work every time. As for the 10 second delay that seems to trouble some people, you can easily adjust the height of the float to make sure you empty the sump completely or make sure it doesn't drain before timer shuts down. This is no big deal. I still recommend this product 100% Coming up on 4 years and this product is still working great not 1 single failure! I originally purchased in 2011, 7 years later the back up float system saved me from flooding. The fist magnetic float switch failed and the second one kicked in as advertised and kept the pump working. I noticed one day that the sump hole water level was higher than I had originally set. After some preliminary investigation I realized that the primary switch float wasn't working but the back up kicked in just as designed. I quickly purchased a new unit which arrived in a few days. I just finished replacing the unit and I'm back to normal. I took the time to disassemble the failed float unit (which is easy to do) and I cleaned up all the caked up silt, and once i did this the old float switch unit is working again! Now I have a reconditioned backup. What I learned is that after 7 years of flawless performance, the unit developed some silt/muddy build up that interfered with the magnet sensing on the primary float inside the cage. Once cleaned all was good again. hence if you have one, it worth the few minutes it takes to clean it up once in a while. So now I'm a 7 year test lab with nothing but excellent results. if I could give it 6 stars I would!

## Features

- Compatible with most sump pump models and brands
- Large floats detect ¼-inch water level rises, automatically activating the sump pump
- Second float provides a failsafe to ensure pump activates
- Protective float switch cage helps keep debris and wires from interfering with float movement; vented, curved bottom reduces debris buildup under the float
- Allows the sump pump to run for an additional 10 seconds to drain excess water from the sump pit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | THE BASEMENT WATCHDOG |
| Color | Blue and Black |
| Material | Plastic |
| Power Source | Electric |
| Product Dimensions | 2.13"L x 2.13"W x 6.82"H |
| Style | Sump Pump |

## Product Details

- **Brand:** THE BASEMENT WATCHDOG
- **Color:** Blue and Black
- **Material:** Plastic
- **Style:** Sump Pump
- **Product Dimensions:** 2.13"L x 2.13"W x 6.82"H
- **Power Source:** Electric
- **Item Weight:** 1.2 Pounds
- **Global Trade Identification Number:** 00717301121562
- **Manufacturer:** Glentronics
- **UPC:** 717301121562 783961223038 784497496910

## Images

![Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1) - Image 1](https://m.media-amazon.com/images/I/81dZSL5JnwL.jpg)

## Questions & Answers

**Q: Can the additional 10 seconds run time be extended, such as 20 seconds and how?**
A: If you know how to solder you can. It's a standard 555 timer circuit. Resister R4 is a 200k ohm. Replace it with a 400k and you'll get about 20 sec. It's linear so for example if you want 30 sec you'd do 600k. I did mine with the existing 200k and in series added a 200k potentiometer so I get a variable 10-20 sec delay. So far so good.

**Q: Mine keeps getting stuck On. The float drops, but the sump continues to run. Any ideas? It is pretty clean..**
A: I did some testing on mine and found something interesting with the relay that turns the pump on/off.  My relay would energize with a minimum of 6.8 Vdc applied across its coil.  To cause the relay to turn off, the applied voltage had to be less than 1.8 Vdc.  This is where I see a potential problem.  That is really close to the voltage that exists during normal operation and would be higher if the line voltage to your AC outlet is higher.  So I could see how the pump could turn on and then never turn off.  Unplug the watchdog, plug it back in, pump would be off but when energized again it would just keep running.  I modified my circuit to make sure the voltage across the relay was about 1.1 Vdc when it was supposed to be off.

**Q: If I use this on the ground at what water level would it activate?**
A: After attaching it to your sump pump you can adjust it to any level however I don't thing it is meant to be used at ground level.

**Q: What hp pump is it rated for? i have a 1/3 hp pump but i don't know if this ill work for my system.**
A: The BWC1 float controller is rated for 12 amps. I'm sure it will run a 1/3 HP pump

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by L***N on January 6, 2026*

This is a great product we have had it for over a year now. We've had multiple power outages, and it's not short-circuited and stopped working. We do have it on a search protector but we have several others in the past. That tore up a lot quicker. So this product is reliable. We haven't installed in our basement for our sump pump

### ⭐⭐⭐⭐⭐ So Far so Good, and still good, and a life saver after 7 years!!
*by E***U on March 25, 2011*

So far this unit works perfectly. I have had water issues for many years on and off due to faulty pump switches and switch systems that stick in the on or off position. After doing a lot of research I found that there are no integrated pump switch systems that are completely reliable. Plumbers have fixes similar to this one that cost anywhere from $100 TO $300. But this solution thus far is the most elegantly simple, low cost and about the only thing that I can see that might fail is the electronics that turn the pump timer on and off. I have had this unit in for about 6 weeks and so far so good it works every time. It's been almost a year now and this switch is still working well, it has saved me a lot of worry and I trust it to work every time. As for the 10 second delay that seems to trouble some people, you can easily adjust the height of the float to make sure you empty the sump completely or make sure it doesn't drain before timer shuts down. This is no big deal. I still recommend this product 100% Coming up on 4 years and this product is still working great not 1 single failure! I originally purchased in 2011, 7 years later the back up float system saved me from flooding. The fist magnetic float switch failed and the second one kicked in as advertised and kept the pump working. I noticed one day that the sump hole water level was higher than I had originally set. After some preliminary investigation I realized that the primary switch float wasn't working but the back up kicked in just as designed. I quickly purchased a new unit which arrived in a few days. I just finished replacing the unit and I'm back to normal. I took the time to disassemble the failed float unit (which is easy to do) and I cleaned up all the caked up silt, and once i did this the old float switch unit is working again! Now I have a reconditioned backup. What I learned is that after 7 years of flawless performance, the unit developed some silt/muddy build up that interfered with the magnet sensing on the primary float inside the cage. Once cleaned all was good again. hence if you have one, it worth the few minutes it takes to clean it up once in a while. So now I'm a 7 year test lab with nothing but excellent results. if I could give it 6 stars I would!

### ⭐⭐⭐⭐ Works fine; yet another power vampire
*by L***S on April 1, 2013*

The basement watchdog arrived today; mounted it on my sump pump, and, behold, it works! Nice. The float unit is 2 inches in diameter and 5 inches tall. It fits in my small sump bucket with room to spare. Nice - other float switches won't work in my cramped space. In the fabulous future of flying cars and robotic maids, I expect sumps to be 18, 20, or even 24 inches across. But for now, I must be content with a 12 inch diameter muckhole. Even better: the float unit apparently runs on low voltage. This is a good thing, since it'll live around water. When it activates, I hear the guy call out, "Click" ... a sure sign that the wallwart has changed states (well, it stays in California, but perhaps it's yearning to return to its birthplace in Shanghai) I'm happy with its timer, which keeps the pump going for 10 seconds beyond the float hitting the low end. During this time, my sump-pump slurps the last half inch out of delicious sump-syrup from the bucket. What's wrong with it? Other pump switch connoisseurs and sump-o-philes will object to its color. It is, alas, all black. Hey - everything around a sump is black: the bucket. the hole. The mud is black. The ABS pipes. And it's the darkest corner of my cellar. Why can't someone make a float switch that shows up when I shine my flashlight there? How about a reflective or white float? Especially, a white cord, so I can see where it's twisted amidst the mud, muck, and debris? Then, too, this is one big wallwart. A 4x3 inch lump that sticks out two inches from your wall outlet. It weighs a shade under a pound; if you often go hiking with your sump pump, you'll eventually notice this weight in your backpack. A very useful feature would be a glowing green LED to say that, Yes, power is reaching the switch. This would save time during those all-too-wet emergencies -- is there power getting to that cellar outlet? ? ? Ideally, the light would glow green when the pump is switched off, yellow when the pump should be powered, and red when the planet Saturn is about to collide with Earth. Sadly, this is a power vampire (even without any LED!). Using an ammeter, I measured it eating 2 watts in standby (which is what it'll do 99 percent of the time). This translates into $3/year for those of us who enjoy the flavorful electricity from Pacific Gas and Electric. So the little guy does not qualify for Energy Star (Level-V requires less than 0.5 watts in standby). In addition, it's quite silent after the sump has been drained. I'd hoped that it would play a rousing Sousa march during the pump action, and then improvise on a few riffs by Thelonius Monk followed by a Bach cantata with a tromba da tirarsi. No such luck.

## Frequently Bought Together

- THE BASEMENT WATCHDOG Universal Replacement Sump Pump Float Switch (Model BWC1)
- THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm
- The Basement Watchdog Compact 110 dB 360° Water Alarm Detects Water on All Sides (BW-WA360)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-25*