Geevon 4 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages, and Attics, Water Alarms Battery-Operated (Battery Included)

Update 5/23/2024 - as is our norm for this time of year, the water table rose enough that it began leaking into our basement. I'd placed one of the units near our troublesome west wall where it'd most likely to have issues. I was upstairs watching television when i heard it going off. I sprinted downstairs where i found water had just barely reached the unit. My older detectors would keep going off until the contact points were dry. These detectors stop sounding as soon as you pick them up as the design is different. A little thing but i prefer that aspect as opposed to the other type with metal prongs. I also was impressed by the tone and volume of these detectors. If i can hear it on the top floor while listening to a television then you won't miss the alarm wherever you are, assumingyou have a 'normal' sized home. These have the best design compared to the other units i tried out last year. All said for the money i couldn't be happier. , due to snow melting off the mountains that surround us, our sump pump runs nonstop from may through august every year. occasionally for a host of reasons the basement still gets water intrusion. when that happens I have to act quickly or a minor issue becomes a major job. that's why we rely on water 'detectors.' the ones we used the last two years were okay at first but then starting going off randomly and for no apparent reason. made worse as those were difficult to snap/pry open to stop them going off. I was very surprised and happy to find these detectors aren't a pain to open and shut. thankfully they made these with a screw on/off top! that one unique difference was much appreciated at my end. inside each was a nine volt battery. the only negative, and a minor one at that, was snapping the battery onto the connectors. it takes more force to do so than expected but that's it. on the bottom are two small protruding pin shaped bits of metal. water conducts electricity. so when you've got water on the floor, water allows current between those two and the alarm goes off. you can easily test it by touching both pins with your fingers. the alarm should then go off and you know with certainty you're good to go. FYI no worries in regards to testing like this. you cannot feel anything whatsoever when testing this way. I just find it to be a quick and effective is all. after the battery is in place and the two halves are screwed back together it's ready for use. place it wherever you want to be forewarned about water intrusion and that's it. I like these better than any we've used over the years simply because of the screw on design. granted it's early in the season but they've already gone off once. that's expected since i turn the sump off over winter and use these to know when it's time to power it up again. so, so far so good!

Simple, cheap, and effective. I've had so many random leaks around my house (water heater, backed up drain, leaky sink, etc.). These little guys are simple and effective and can save you a ton of hassle, time, and money by detecting the leak when it starts and before it is too late. I just wish I would have bought them sooner. Not sure about how long they last, so crossing my fingers on that part. Otherwise, just buy them!

They work fine, but the alarm is not as loud as a smoke alarm. I probably would not buy these again.

I needed something simple to detect if water was overflowing from our filter. This is nice and loud and simple to use.

I put these at my mom's house under every fixture and just as I was about to leave one day (months later), the alarm went off. It sounded like a smoke detector and I was able to stop the leak before I left and saved her thousands of dollars in repairs! Worth Every Penny!

These definately work. We have been battling water leaks under our laundry room floor. One week after installing these they were going off one morning and sure enough, we had another leak. Due to having these under a floor I do wish the beep volume was much louder than it is but it is definately better than nothing.

These have saved me from two massive floods, one under my kitchen sink and one under my washer. They are loud and noticeable and react to even the slightest bit of water. Would buy again and again and again !

It works, but only if it were louder. It's already loud, but if my basement floods in my sleep I want to get the hell up as soon as I can. I intended to only use one of these and give the other to a neighbor. End up putting the two right next to each other to "increase" the volume when they touch water. If you don't screw on the cover all the way, it's louder. The cover is muffling the noise. So I screw it just enough that its closed and its at max volume.

Great item to have, especially in laundry rooms, where a hose may break, and you don't even notice it for quite a while.

Buen producto, cumplen con su función, fácil de colocar.

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Not sure how long these work well for but they've already saved us trouble within a week of purchase from an overflowing blocked laundry sink. The units come with batteries packaged inside. You unscrew them and then remove the plastic from the batteries and connect them. They have 3 metal points on the bottom and when all 3 points come into contact with liquid the alarm goes off. There is a hole on the cap. Make sure to align the hole with the alarm/speaker, otherwise the noise will be a bit muted. It's hard to align the hole perfectly while also ensuring the cap is screwed on completely tight so I just left the cap a little bit loose. Test the units work by wetting your hand and making sure all 3 contact points touch your hand. When our laundry got wet, one of the units alarmed us and kept going every time we reconnected it cos there was water inside the device. Once we dried it out, it worked fine again so it's reassuring a bit of water inside the device doesn't wreck it. I think really the only downside is these units don't have a phone app but if you mostly work from home or don't care about a phone app then these are perfect.