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💧 Stay dry, stay ahead — the watchdog your home deserves!
The Basement Watchdog BWD-HWA is a compact, battery-powered water alarm featuring ultra-sensitive solid-state circuitry that detects water as shallow as 1/32 inch. Its piercing 110 dB alarm alerts you instantly, while the detachable 6 ft. sensor wire allows placement in hard-to-reach areas like sump pits or behind appliances. Expandable with over 100 ft. of additional wiring, it offers customizable home protection. Powered by a 9V battery with up to 10 years of life, it’s a reliable, low-maintenance safeguard against costly water damage.







| Asin | B000JOK11K |
| Audible Noise | 110 db |
| Battery Description | Alkaline |
| Best Sellers Rank | #5,290 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #7 in Water Detectors & Alarms |
| Brand | BASEMENT WATCHDOG |
| Built In Media | BWD-HWA |
| Color | White |
| Control Method | App |
| Customer Reviews | 4.7 4.7 out of 5 stars (8,650) 4.7 out of 5 stars |
| Global Trade Identification Number | 00716080038429, 00717301121302 |
| Item Dimensions L X W X H | 1"L x 1"W x 1"H |
| Item Type Name | Basement Watchdog High Water Alarm |
| Item Weight | 4.7 ounces |
| Manufacturer | Glentronics, Inc. |
| Manufacturer Warranty Description | 5 Year Warranty |
| Maximum Range | 6 feet |
| Mfr Part Number | BWD-HWA |
| Model Number | BWD-HWA |
| Mounting Type | Wall Mount |
| Number Of Items | 1 |
| Power Source | Battery Powered |
| Sensor Technology | Water Sensor |
| Size | Pack of 1 |
| Unit Count | 1 Count |
| Upc | 716080038429 767654523339 885566817183 074994332683 885523467093 885782752145 653801120882 717301121302 885967820928 735090671587 885821250670 885563950142 |
| Voltage | 9 volts |
User
Best investment for preventing potential water issues or disasters.
These little things could save you a LOT of money. I own my home, and I do everything I can to protect it, and keep it and myself safe. I’ve had previous homes with water issues, and when I saw these I thought “ I’m buying one of these for every area where there is potential for water damage” Put one under any sink, behind every toilet, by your water heater, behind your washer, under your dishwasher and even I few placed strategically under the home where water lines run. Trust me, they are loud enough that you will hear them. They are quite small. (About the size of a pack of ciggies) and they use a 9v battery that will easily last 7-10 years. Just remember to change batteries out about every 5-7 years to be safe. They have multiple ways to use them. You can run the little cables to a specific place, or just set them on the surface under where water may go and your all set. To me, these are about as useful as smoke detectors if not more useful. Water can do a ton of damage if gone unchecked. I little drip can turn into you having to replace a floor, or worse. If you don’t buy something like this to prevent potential damage, it’s on you because these things are cheap enough that there is no excuse and it’s on you when SHTF.
User
Great Product
In March of 2024, I purchased the “Basement Watchdog Model BWD-HWA 110 dB Battery Operated Water Alarm” from Amazon and good thing I did. I positioned the small sensors in the tray below my hot water heater in my laundry room. About two weeks ago, my hot water heater broke and the Basement Watchdog did its job! It set an alarm off. Yes, the alarm was loud but it was effective in alerting me to a leak that was taking place. The water alarm was reliable and easy to install, taking seconds to set up. It was effective in preventing water damage and it saved me thousands of dollars in potential damage! It really worked!!
User
It already saved me once from a leaking water heater!
THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm, has been an excellent addition to my home safety setup. This water alarm is perfect for placing next to water heaters, next to the dishwasher or laundry room, under kitchen and bathroom sinks, and by AC drain pans. It saved me big from a leaking water heater!The alarm is powered by a 9v battery, which makes it very convenient to install anywhere without worrying about electrical outlets. The 110 dB alarm is loud and ensures that you can hear it from anywhere in the house, giving you peace of mind that you will be alerted to any leaks or water issues promptly.One of the standout features of this product is its extended cable, which allows you to place the sensor separately from the main device. This is incredibly useful for those hard-to-reach spots where leaks are most likely to occur but where placing the entire device might be impractical.Make sure to test it periodically by touching the two sensors with a finger. I also write the date of installation on the battery and change it once a year.With the cost of insurance and labor going up, don't skip on this economical and reliable home protection device!Overall, THE BASEMENT WATCHDOG Model BWD-HWA is a reliable and effective water alarm. It's easy to set up, provides a loud and clear alert, and offers the flexibility to position the sensor in the most critical locations. I highly recommend it for anyone looking to protect their home from potential water damage.
User
GREAT BUT NEEDS ON/OFF SWITCH!
This works great as many others have said.Sometimes, the sensing element could be placed away from the box .. like in a hard to access area. Once the alarm sounds, you may need to shut it off ASAP. Especially say you have an elderly person or a tenant who can't reach into wherever the sensor is installed.So it would be even better if they added a simple ON/OFF switch! There is LOTS of space inside to add a switch .. it's like one of those 1970's V8 engines, mostly empty space!I added a switch myself, see photo.
User
Peace of mind
I have more than one of these. Original sits in a tray that is around the hot water heater as recommended by my plumber. A few years ago it went off to alert (loud beep) us the water tank was leaking (about a year before it was due to be replaced. Lucky we were home!! Bought extra for washing machine and under kitchen sink. Recently noticed a spot of water under bathroom sink so got another. No alerts & no leaks - just sweaty pipe.
User
Everyone needs several of these
Everyone should have several of these . It has saved us from leaks and floods many times . I’ve given them as stocking stuffers and house and apartment gifts for my kids and college apartments. This alarm is super loud. Great near dishwashers -under sinks- behind toilets and refrigerators- next to water heaters-. Beside tubs and showers One 9 volt battery and you’re ready to go. Floods are horrible . This will warn you and save you so much grief, damage and expense. I’ve been using these for at least 30 years . Tried and true, simple and cheap. If you need to silence it quickly when it’s detected water _just unsnap one of the sensors. This thing is fantastic!
User
Works great, cheap insurance!
Works great, saved me from a flooded basement when my old sump pump died. This alarm went off two days before I had an overseas trip of over 2 weeks. I was able to replace my sump pump prior to leaving and the timing couldn't have been better. Everyone needs one of these for their basement sump pump!
User
Excellent value, fair price, and real peace of mind
The Basement Watchdog water detector is one of those products you hope you’ll never actually need—but you’re really glad it’s there. For the price, this is an excellent value and a smart investment in protecting your home.Setup couldn’t be easier: pop in the battery and place it where water might appear. No apps, subscriptions, or Wi‑Fi required. I tested it with a small amount of water and the alarm is very loud—easily heard from upstairs—which is exactly what you want if something goes wrong.What really stands out is how versatile this detector is. I initially placed it near my sump pump, but it would work just as well by a water heater, washing machine, utility sink, or anywhere a leak could cause damage. Because it’s compact and self‑contained, you can move it around as needed or buy multiple units without breaking the bank.Considering the fair price, solid build quality, and the potential savings from catching a leak early, this is an outstanding value. It’s inexpensive insurance that can prevent a very expensive problem.If you want a simple, reliable, no‑nonsense water alarm that just works and doesn’t overcomplicate things, I highly recommend this one.
User
Earned its keep.
Had a defroster plugged which caused water to leak under my fridge. The water alarm was loud and let me know something was wrong. I recommend buying many of these and putting them under any water source.May 26-2016,Unit is now 2/2. Caught a leak under the kitchen sink. Turns out the pull out hose from the faucet developed a leak. No water damage because it was caught quickly. I have 8 of these scattered across the house and all it took was one to justify the cost for all of them.
User
Cumple su función
No es estético pero cumple su función.Ojalá que hagan versiones más estéticas.
User
has a real loud sound
the best on the market
User
Nice item
Appears to be well made, time will tell how reliable it is. it is not as loud as some comments led me to believe but will probably be loud enough.
User
Happy
Fantastic! Slightest bit of water and it goes off. Sounds like your smoke detector would so it is plenty loud enough.Update! This is set up downstairs by our drainhole in the laundry room as we have a history of sewer backup. Last night it went off and we heard it no problem watching tv upstairs. We ran downstairs to find water starting to up. Thanks to this alarm we caught it instantly and had zero damage or cleanup
Trustpilot
2 weeks ago
1 month ago