Model # RWD21

Internet #204116885

null Re-Useable Water Leak Alarm

Re-Useable Water Leak Alarm

$1069 /each
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Product Overview

Be alerted of water leaks on the spot to avoid potentially costly water damage. Add piece of mind with a Honeywell Water Leak Alarm. Place the water leak alarm throughout your home in hard-to-see areas: around toilet bases; under sinks; behind dishwashers, refrigerators and washing machines; and by water heaters and sump pumps. A little addition can make a big difference.

  • Unlimited use spot detector; easily re-sets for re-use
  • Water sensor and alarm all in one
  • Economical way to defend against water leaks in multiple locations throughout the home
  • Ideal for use in hard to see areas including around toilet bases; under sinks; behind dishwashers, refrigerators and washing machines; and by water heaters and sump pumps
  • Loud audible alarm that sounds up to 24 hours when water is detected
  • Detects water only 1/16 in. deep
  • Requires a 9-volt battery (sold separately)

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Width (in.)


Finish Family
Product Type
Water Alarms
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
1 year limited warranty

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Customer Questions & Answers

Does it have a test function? Low battery alarm?

Asked by: Joe
Answered by: Lisa
Date published: 2017-05-03

does the unit have an alert for a low battery condition?

Does the unit alert to a low battery condition similar to a smoke alarm?
Asked by: Allen
Yes it emits a low battery chirp. Uses a 9V battery.
Answered by: Travelynnn
Date published: 2017-07-29


if i use my Home depot card online will I get the %5 discount
Asked by: JLW46
To my knowledge there is no automatic 5% discount with the Home Depot card. In store you can request a 5% discount if you use the Home Depot card and show that you have a Lowes card (which does have an automatic 5% discount). There is no way to perform this action online so online purchases would not receive a discount.
Answered by: RJJ21
Date published: 2017-07-29

How long does the 9 V battery last?

How long does the 9 V battery last?
Asked by: carl
I have not had a battery in it longer than a year. I change it out in order to preclude it from not working due to a low battery (much the same as a smoke detector battery should be changed annually if you don't have a lithium battery). I'd rather be safe than sorry and change the battery annually.
Answered by: DickB
Date published: 2017-07-29
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Customer Reviews

Re-Useable Water Leak Alarm is rated 4.5 out of 5 by 35.
Rated 3 out of 5 by from I'm rating it 3 stars bec I like the idea of having one of these. I have questions about the prod... I'm rating it 3 stars bec I like the idea of having one of these. I have questions about the product though. Like in any other products, how do I know that it will work? Is there a test I can do? It didn't come with adhesive so I bought double sided tape separately. And batteries too. I think it should have been mentioned somewhere that I should also buy tape & batteries along with this product.
Date published: 2017-03-28
Rated 5 out of 5 by from Excellent product, works great Excellent product, works great
Date published: 2017-03-07
Rated 4 out of 5 by from great concept - but volume of alert may be a little low This is a low energy consumption device that takes a 9-volt battery and easily last over 6 months, perhaps even more than a year with a fresh 9-volt alkaline battery. I had been using a rechargeable one, and after 4 plus months, the battery appeared to have at least 75% power left. Thinking it may have not been working (I left it next to the water heater), I tested it and it did in fact work - the beeping is not as loud as a smoke detector, but if the house is quiet, I could probably hear it in the basement. If you paired this up with an internet-of-things sound detector, it would be a great combination. There is two metal contacts on the bottom. So if water that has spilled, hits both metal contacts, it will create a circuit making the alarm go off.
Date published: 2016-03-07
Rated 5 out of 5 by from peace of mind purchase Very simple to put in place and ready to use ... install a 9-v battery and place by any water source that might happen. Gives me great peace of mind after having to spend nearly $3,000 for the clean up of water damage from the condensate line of my furnace backing up.
Date published: 2016-08-23
Rated 5 out of 5 by from Feel safer with this great deal! Tough to beat the low price on a name brand, especially if you're buying multiple water leak alarms to place by every sink, toilet, and appliance in your bathrooms, kitchen, laundry room, and anywhere else water leaks could occur (which you SHOULD). Only qualm is this product runs on pricey 9V batteries, which must be purchased separately. This seems to be true of any comparable water leak alarm, though.
Date published: 2013-12-16
Rated 5 out of 5 by from Such a Simple, Useful Thing - Every Home Should Have at Least One If I had had this Honeywell water leak alarm when I moved in to my new-to-me home, it may have saved my wood floors from a disastrous water heater leak. Now that the water heater and floors are replaced, I put this in the water heater closet, confident it will alert me to any future leaks. It's such a simple thing to get, put in place and use - simply add a battery and put in place. Peace of mind for pennies.
Date published: 2016-04-30
Rated 5 out of 5 by from Reuseable water leak alarm After a few water leaks I decided leak detectors are needed in a few apartments I own. These beep when the battery is low which I wanted but these may not work in some areas like under the sink when storage is packed in layers deep (might cover the speaker). I had a leak under my sink two days after I installed it and I don't have storage packed layers deep but the alarm was not as loud as I expected yet I was able to hear it. If it had items on top of it like my tenants often do it may not be audible.
Date published: 2015-03-06
Rated 4 out of 5 by from Compact and easy to use Was exactly what I was looking for size wise, I was hoping for an alarm tone that would be more in my hearing range, however my wife said it was quite loud and irritating. She can hear crickets, I cannot in my hearing range. :) Hope to never have to actually experience them in a water situation.
Date published: 2013-10-01
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