This story becomes part of Holiday Gift Guide 2019, your source for the season’s best presents and deals, hand-picked by the specialists at CNET.

I do not toss around words like “must” and “have” extremely lightly, but I’m feeling quite strongly this is a must-have product. See, soon after I remodeled my basement last summer, our water-softener system developed a leakage. It was only dumb luck that we identified it prior to the water reached the freshly ended up floorings– and caused who-knows-how-much damage.

My moms and dads, meanwhile, had substantial water damage under their cooking area sink arising from a sluggish faucet-leak they didn’t identify till much later on. If only innovation might use some kind of detection system for this kind of thing!

OK, there are many such systems, however many (most?) of them deliver an audible alarm which’s it. Here’s one that’s way smarter: For a minimal time, and while products last, the Govee WiFi Water Sensing unit 3-pack is simply $2349 Routine cost: $50 Update: This offer was $31 last week with a promotion code, however has actually now dropped to this even lower price, no code required.

If the Govee brand name sounds familiar, it’s because I just recently blogged about one of their LED light-strip kits (which is presently pulling bias-lighting duty behind my TV). Turns out the company makes (or a minimum of rebrands) a variety of wise home items.

This one relies on a Wi-Fi center that plugs into any outlet and three battery-powered sensors. (The batteries are included and set up; you simply pull a tab to activate the sensing unit.) It took me 2 attempts to get the hub effectively linked to my house network, after that it was smooth sailing. (Your mileage might differ; if you look at the user evaluations, you’ll see that some individuals had problem getting everything set up.)

Read more: Best mesh Wi-Fi system of 2019

I put among the sensing units together with the aforementioned softener system, one under the kitchen sink and one under the master-bathroom sink. Before doing so, however, I checked one by putting it on a plate with just a little water on it. In a matter of seconds, its loud (but not deafening) alarm sounded. A couple of seconds after that, I got a notice on my phone. And in my inbox I discovered yet another alert.

Read more: Best shower filters for 2019

The sensors likewise have integrated drip-detectors on top, so if you place one straight below a prospective leak source (such as a faucet), it’ll capture those, too. And if you require more than three sensing units, the system can accommodate expansion.

Here’s the potential deal-breaker for some purchasers: The package requires a 2.4 GHz Wi-Fi network; it can’t deal with those that run just at 5GHz. (My Eero system can do both concurrently, one reason I’m very thankful I spent a little additional when choosing a mesh network.)

Obviously I can’t state right now how trusted these are long-term, but the peace of mind alone deserves $23 And the sensors appear to work precisely as marketed.

Your ideas?

Note: Originally released recently. Updated to reflect new sale price and/or availability.

CNET’s Scrooge searches the web for lots on tech products and a lot more. For the current deals and updates, follow the Cheapskate on Facebook and Twitter Discover more great buys on the CNET Offers page and check out our CNET Coupons page for the latest promotion codes from Finest Buy, Walmart, Amazon, and more Concerns about the Cheapskate blog? Discover the responses on our FAQ page