Geevon4 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)

Just the right size to fit into small areas that may need water alerts. Easy to install the included batteries. Sensor test was satisfactory, and the sound produced was loud enough.

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!

I paid $27.52 for a box of 6 detectors. The package arrived in good condition. The detectors were easy to set up, and installing the batteries was straightforward. I tested one on a wet surface, and the alarm was loud enough to be heard clearly, which gives me peace of mind for potential leaks.I’m not sure yet how long the batteries will last. Overall, it’s a good value for extra protection in areas prone to leaks.

We put the batteries in these items and decided to test them. I ran water on my hand and set the item on my palm and the alarm went off. I know they will warn us of the smallest leak.We chose this brand over others because of the ease of use; no internet needed, no iPhone necessary just install the battery and place the unit where a leak would land and forget it. We are using the idea given for fire alarms. We plan to replace the batteries in these units every year on January 1st. All we need to do now is sit back and know we are protectedfrom leaks.

These water alarms really work. They have saved alerted me of a water leak several times. They really get your attention. I have them under every sink and the washing machine. I highly recommend them.

I love simple. I mean, I get it - people want a bluetooth, internet, cloud enabled water detector so they can get notified that their fish tank overflowed while they are on vacation in Mexico. And this is not that, but that kind of detector can often also fail to work (batteries, internet, cloud services, etc) and this kind - the Keep It Simple Stupid kind, has a place too.Many water leaks start small. And many, most, of us are home at least every day.These detectors are dead simple, just some contacts, a 9V battery and a siren.Open them up, connect the battery, and screw the lid back on (BE SURE TO LINE UP THE HOLE WITH THE SPEAKER).Place where water will someday leak, and wait. I personally set a calendar reminder for 3 years from now to replace the batteries. I do not believe these drain the battery fast at all, and decent 9v alkaline batteries last 10 years in storage, so - 3 seems about right to be safe.I have these placed everywhere I have had a leak in the past 10 years. Next to water heater, under fish tank, under sink, and under dishwasher. If I had one more I'd probably put it near the washing machine, but that usually gets noticed by whoever is doing laundry anyway.Good, cheap, Simple...

Only half work and there's no way to test if they're operational. I might just have two useless detectors

I am not receiving endorsement for this review.I got these little gems, connected the included batteries, and tried them out in the sink with no standing water, only water droplets. Every single one work flawlessly. They were all the same loud tone, at 100db. If you can't hear these, you have other issues and should get your hearing checked. They are LOUD. Not as loud as a smoke detector, but not far behind.You get 8, WITH batteries. They easily unscrew to access the battery compartment. Hooking the battery up was a breeze, and there was plenty of room to push the wires in that connect the battery.Buy these. You will not be sorry.