Water Leak Sensor Detector Flood Alarm 120dB Water Level Overflow Sensor Detectors Full Water Leakage Detector System for Bath Tub Sink Security Leak Detection and Flood Alerts

Yes, perfect and very loud alarm when it touches water.

The media could not be loaded. The 3 pack water alarms arrive each in their own box. The instructions are not in English, which for me is fine as none are required really. They will each need 9V batteries, which are not supplied, again, this is fine for me, as most of the time supplied batteries tend to be of inferior quality that I usually replace any I get with decent batteries that perform better and more importantly are less prone to leaking.These units are quite old school, with nothing fancy about them. Simple and straight to the point, old style tech that still works perfectly fine in this day and age. As can be heard in the attached video, the siren is very loud and should be loud enough to hear from anywhere in the average sized house.Overall, they work well and are a very fair price for a pack of 3... I like them!

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.