Can the additional 10 seconds run time be extended, such as 20 seconds and how?

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.

Mine keeps getting stuck On. The float drops, but the sump continues to run. Any ideas? It is pretty clean..

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.

If I use this on the ground at what water level would it activate?

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.

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.

The BWC1 float controller is rated for 12 amps. I'm sure it will run a 1/3 HP pump

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The Basement Watchdog Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1)

The Basement Watchdog Universal Dual Float Switch Replaces Piggyback Sump Pump Switches (BWC1)

Product ID: 2464695

Details

Brand
BASEMENT
Color
Blue and Black
Global Trade Identification Number
Item Weight
1.2 pounds
Manufacturer
Glentronics
Material
Plastic

💧Dual float sensors detect ¼-inch water rise

⚙️Universal compatibility with most sump pumps

🛡️Protective cage reduces debris interference

¥17451

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Description

💧 Stay dry, stay ahead — the ultimate sump pump sidekick!

EXTENDED DRAIN CYCLE - Pump runs 10 extra seconds to clear residual water, preventing floods
BUILT IN BACKUP SAFETY - Second float ensures pump runs even if primary fails
SEAMLESS COMPATIBILITY - Fits most sump pump brands for effortless upgrades
DEBRIS RESISTANT DESIGN - Vented, curved float cage minimizes debris buildup and wire tangles
PRECISION WATER DETECTION - Large floats trigger pump activation at just ¼-inch water rise

The Basement Watchdog Universal Dual Float Switch (BWC1) is a high-performance sump pump accessory designed for universal compatibility. Featuring dual large floats that detect minimal water level rises and a protective cage to prevent debris interference, it ensures reliable pump activation and extended drainage. Backed by a 2-year warranty and trusted by thousands, it’s the smart upgrade for proactive basement water management.

Specifications

ASIN	B000KR86MC
Best Sellers Rank	#98,225 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #90 in Water Pump Accessories
Brand Name	BASEMENT WATCHDOG
Color	Blue and Black
Customer Reviews	4.6 4.6 out of 5 stars (1,091)
Global Trade Identification Number	00717301121562
Included Components	BWC1
Item Dimensions L x W x H	2.13"L x 2.13"W x 6.82"H
Item Type Name	Basement Watchdog Universal Sump Pump Dual Float Switch
Item Weight	1.2 pounds
Manufacturer	Glentronics
Manufacturer Part Number	BWC1
Manufacturer Warranty Description	2 Year Warranty
Material Type	Plastic
Model Number	BWC1
Number of Items	1
Number of Packs	1
Power Source	Corded Electric
Product Style	Sump Pump
Specific Uses For Product	Basement water detection and sump pump activation, Home improvement projects, Water treatment, Emergency situations
UPC	717301121562 783961223038 784497496910
Unit Count	1 Count

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¥17451

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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2 weeks ago

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