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Glentronics, Inc. BWD-HWA Basement Watchdog Water Sensor and Alarm

4.6 out of 5 stars 714 customer reviews
| 56 answered questions
#1 Best Sellerin Water Detectors & Alarms
List Price: $19.95
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  • Detects unwanted water only 1/32" deep
  • Alarm is placed on the floor near water heaters
  • Sensor has a 6' wire
  • Loud 110Db alarm
  • Battery saver feature keeps batteries fresh longer
  • Requires a 9-volt alkaline battery (not included)
  • Battery-saver feature only uses energy when the alarm is sounding for a long battery life
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Product Information

Technical Details

Part Number BWD-HWA
Item Weight 5.6 ounces
Product Dimensions 1.2 x 3.2 x 4.2 inches
Origin USA
Item model number BWD-HWA
Color white
Material Plastic
Power Source battery-powered
Item Package Quantity 1
Warranty Description 5 Year Warranty

Additional Information

ASIN B000JOK11K
Customer Reviews
4.6 out of 5 stars 714 customer reviews

4.6 out of 5 stars
Best Sellers Rank #308 in Home Improvements (See top 100)
#1 in Home Improvement > Safety & Security > Household Sensors & Alarms > Water Detectors & Alarms
#19 in Home & Kitchen > Kitchen & Dining > Water Coolers & Filters
Shipping Weight 5.6 ounces (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available November 1, 2000

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Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsBest $15 I've ever spent
By A Johnson on February 19, 2011
A year ago I got into a bit of a "emergency preparedness" mode, and among other things, bought one of these devices, installed it in my water heater pan and then forgot all about it.

At 12:30 a.m. a couple of nights ago, an alarm began ringing. I had no idea what it was, except that it wasn't a smoke detector (not as loud as that) but after wandering around the house for a bit, I followed the sound to the basement and found a small amount of water in the water heater pan. The alarm turned off as soon as I pulled the sensors out of the water.

It was soon obvious this was no small leak. Over the next 12 hours until we got the water heater replaced, we easily bailed 30 or more gallons of water out of the bin we placed to catch the overflow from the pan.

Had the alarm not sounded, it could have been 24 hours or more before the leak was noticed. The basement storage room where the water heater is located, and the adjoining (carpeted) rec room would have been flooded, requiring a major effort to dry them out and damage/destruction of a number of items. Drying out the basement to prevent mold would have required the rental of some high-powered dehumidifiers (been there, done that).

This item did exactly what it was supposed to do. After reading some of the reviews indicating some lack of reliability, I may well install a couple of extras in the basement as backup, and putting some in other locations, such as under/near the washing machine, under sinks, and under the dishwasher, seems like a good idea.Read more ›
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5.0 out of 5 starsLess than $10 @ my local hardware store (free tax too). Better than Leak Frog.
By åmâzŏniān VINE VOICE on January 7, 2012
Why is this better than Leak Frog:

1) 5-yr run time on each battery, provided that battery's expiry date is not earlier than that. Leak Frog? 1 yr. Maybe 2~3 yrs if you use Li batteries (my assumption only - see my Leak Frog comment).

2) $9.95 @ my local hardware store and this is widely available. Leak Frog? Almost $15 now and seems like it's Amazon's exclusive offering.

3) Audibly louder than Leak Frog.

4) No screwdriver needed for battery compartment door, Leak Frog needs screwdriver to access that - supposedly annually too! I dislike.

5) Slender form factor makes it easier to snug in underneath fridge and dishwasher.

6) Remote (if desired) sensor placement within 6' makes it super versatile. I inserted this remote sensor far deep underneath my fridge with ease. Leak Frog? Where it is located is where it senses.

7) Less toyish look - I didn't pay a premium for the latest stainless appliances so that I can place a green toy there in plain sight. I wish that the Watchdog was black (or stainless) and smaller than this, but this is still acceptable.

8) 5-yr manufacturer's warranty. Leak Frog's 1 yr.

9) Leak Frog maker seems to be a one hit wonder. This one's mother company makes a wide assortment of other basement flood prevention goodies. This seems more pro.

I already own 4 Leak Frogs & now 2 Watchdogs, I still need at least 2 more water alarms, I'll get the Watchdog from now on...
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4.0 out of 5 starsYou would be crazy not to buy/use them, a lot of them!
By Stephen Gertsch on July 18, 2015
Verified Purchase
These thing can save you literally thousands of dollars associated with repair of water damage. I have installed one under every sink, dishwasher, behind every toilet, washing machine and refrigerator (ice maker water supply). Essentially, any place where there is a water supply to a faucet or appliance.

Most water damage is not the result of a catastrophic failure (ex pipe or water supply line break), but a small leak in the appliance, or drain that goes unnoticed for an extended period time.

These things are really sensitive; the smallest amount of moisture will trigger the alarm and it is loud. A good quality battery is supposed to last 5 years but I would test the unit and inspect the battery yearly.

The detachable sensor makes it possible to install in a normally hard to access area, for example, underneath a dishwasher and have the alarm unit in the sink cabinet. In this application I modified the unit adding a On/Off switch to turn easily turn alarm off instead of having to futz with removing the battery while the alarm is SCREAMIMG at you. (Getting the battery access cover off and the battery disconnected could be made easier.)

What would make these units perfect is if they were mesh connected to a hub unit that could connect wirelessly to my internet connection. An alarm event would send me and alternate either a text/e-mail, or both. I could image adding a whole house water shut off that could automatically shut off the water to deal with a catastrophic failure when no one is home.
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5.0 out of 5 starsWater Alarm alerts you to water problem
By Priscilla W on August 22, 2007
The Water Alarm also has a 6-foot sensor wire, so that you can extend the sensor into a sump pump, or the alarm will sound before water spills out onto the floor. The alarm plugs into the wall plus has a 9 Volt battery backup. We use ours for the sump pump & it works wonderfully!

When the alarm goes off...we pull up on the sump pump floater string & the sump pump starts right away and the alarm turns off right away.

The alarm is loud. Our house is a ranch style, a bit over 1,100 sq ft...the sump pump is in the basement...opposite corner than our bedrooms on the main floor...I could still hear the alarm going off in the middle of the night.

This item works as it says it will, I'd purchase this item again. We purchased our's at a major hardware store in our area for about $10
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Most Recent Customer Reviews

5.0 out of 5 starsFive Stars

Tested it and it works as described.

Published 1 day ago by Foxwood
5.0 out of 5 starsEasy to setup

Very loud, easy to setup- just put in a battery and your good to go

Published 1 day ago by kyley
5.0 out of 5 starsGreat item!

Great item!

Published 1 day ago by BKJ
5.0 out of 5 starsInitial test on a wet paper towel worked great. Hopefully I'll never...

Initial test on a wet paper towel worked great. Hopefully I'll never experience the true test of a leaking hot water heater, but if I do, this little gem could save a whole lot of... Read more

Published 3 days ago by veratom
5.0 out of 5 starsPerfect unit for my needs.

Bought this to use for my Hot water tank and another for my washing machine in a second floor condo. It was easy to hook up and install and works well when tested. Read more

Published 4 days ago by MAK
5.0 out of 5 starsTalk about peace of mind. I live in a ...

Talk about peace of mind. I live in a very hard water area and my fear that the hot water heater will spring a leak is overwhelming. Read more

Published 6 days ago by Karin Mason
5.0 out of 5 starsFive Stars

Love it

Published 6 days ago by Eric
5.0 out of 5 starsso glad they still have this

This is my second one. I brought my first one over 20 years ago to use by my sump pump. I needed a second one for my laundry tub sink. so glad they still have this. Read more

Published 6 days ago by VL
5.0 out of 5 starswork great

when there is a water leak behind the washing machine......these will wake you up!!!!!! which is a good thing.....

Published 7 days ago by David Bennett
5.0 out of 5 starsAWESOME PRODUCT

FOR THE PRICE, THIS IS AN ABSOLUTE MUST IN THE KITCHEN UNDER THE DISHWASHER OR THE LAUNDRY ROOM UNDER THE WASHER. SOUND IS LOUD AND VERY ANNOYING. Read more

Published 10 days ago by chuck hulet

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