Topvico Water Leak Sensor Detector Flood Alarm for Basement RV Moisture 120dB Work Alone Battery Operated 3 Packs

For the second time in 10 years, our dishwasher had a slow leak that eventually led to noticeably cupped hardwood flooring. Ughh. After replacing the hose fitting, I decided to install some sort of early warning leak detection system to prevent these slow, floor-soaking events from happening again. I started out thinking "high end, WIFI, Apple compatible etc. and even ordered one. After receipt, I found out I needed a special app that I didn't have and didn't want, so I returned it unopened. I then decided to take the dirt-cheap approach and purchased 3 of these for $15. After receipt, I remember installing a battery to test one and began wondering if I could do so without breaking it. They are not tough, solid, bullet-proof, and robust. They have a "low cost" character to them (no surprise). But they are good enough for normal handling and care. However, much to my delight, I found out that simply touching their sensor with a damp q-tip swab was enough to set them off. Yeah! I have seen too many videos of people pouring a cup of water on a sensor to show that they work. These low cost devices are VERY SENSITIVE! Plus, they are old school (reliable) hard wired so no need for wifi headaches. Plenty Loud too. I needed to extend the wires, which was easily done with solder and heat shrink tubing. So now I have two redundant systems. One goes to a small plastic cup under the problematic hose fitting to the dish washer, and the other is attached to the flooring just behind the dishwasher. The two alarm units are mounted under the kitchen sink. My plan is to replace batteries on a rotating 3 month schedule and to load test the removed batteries to build confidence in what their life actually is, then lengthen replacement life as I safely can. Not fancy. Not expensive. No more damaged hardwood floors. Met my needs!

This is just a simple leak monitor, no apps, no remote detection, just a simple put it where you need it. Its just what I was looking for as I didn't want to be bothered with installing another app on my phone. I got this to put in a ac drip pan to monitor for any leaks or blockages in the condensate drain. It seems to be working well. I tested it and it quickly reacted to water with a loud an piercing tone. Its super loud and you can hear it even if it is hidden up in the attic. Not sure how long the batteries will last so I'll just replace it annually (if I can remember). This is really a good bargain, its so cheap and is working as advertised.

The device works well and the alert alarm is loud. The sensor is kind of difficult to get to lay flat.

This is a practical product! Every sink cabinet, water heater tray, and dishwasher needs one. The gold plated figures on the sensor PCB are a nice touch to prevent corrosion. If you need to place the sensor on a metallic surface, you can wrap it with a thin layer of toilet paper (genius?) to prevent shorting the gold fingers, yet allow water to trigger the alarm.I measured the current in stand-by mode and calculate the expected battery life. In standby mode, this detector draws less than 0.05 micro amps. Impressive! So a typical 9V battery with 500 mAh capacity should last a few hundred years. I'll update my review in 100 years :-) The current jumps to as high as 100 mA when the sound is activated. You probably want to measure and /or replace the battery if the sound has been activated for a while.

Perfect

Haven’t had one go off except when tested. I believe if they go off you could wake your neighbors.

Saved me a whole lot of massive damage . were having really bad Northwest wesather below freezing several days blizzard and now Ice storm. 6am heard the siren from upper floor - knew immediately there was a water leak somewhere , ran down stairs , sure enough the garage alarm was loud and warning as I had burst pipes. shut water down immediately and saved a whole lot of further damage by these waking me up.WELL WORTH EVERY PENNY SPENT. THEY WORK WELL AND YOU'LL KNOW IF YOU HAVE ANY KIND OF LEAK IF PLACED COREECTLY. Spending little for the 3 units but were worth much more for warning me an issue was at hand. If you worry about leaks and want something to notify you these work great!Seriously had the water continued I would have had a few hundred dollars damage - I have 6 units throughout the house wherever there could be leaks. IM SOLD ON THEM....THEY ALREADY PAID BACK IN A HuGE WAY! worth every penny , can't stress enough! Simple but powerful. saves $$$ from damage .

I've lived in NYC apartments for most of my life, and have found water-leak sensors invaluable. I have never used any of the whole-home wireless systems, or the ones with "smart phone" apps. But for the money, these are the best lower priced devices I've found...Most importantly, the flat sensor can be taped securely to the floor with the included tape, so that any water touching it will sound the (loud) alert fast.Many other detectors have two-point sensors which must be reached by water before they are triggered--the problem with these is positioning the sensor downward so that the points both touch and remain at floor level (they are very light-weight and can easily move or curl up a bit, delaying activation of the alarm)....Also, this device has an on-off switch on the side of the alarm, so that an accidental tripping of the alarm -- for example, by a few drops of water accidentally flung under the sink -- can quickly be turned off til you've dried the sensor... Downside (1) there are no mounting holes or other means of attaching the back of the alarm box to a wall, so it must be taped, or laid flat somewhere and (2) there may be no low battery alarm-see NOTE below of this review.NOTE: I change all my 9v alarm batteries (smoke, CO etc once a year, even though many will last far longer. One reviewer said there was no low-battery warning; another says there is a warning and it's the same as if you had a leak...I don't know who's right--there are no instructions with the unit.