Skip to content
Shop Your Local Store Ship to Your Hometown Store
Pro & Contractor Accounts Apply for Net Terms
100,000+ Products Trusted Authentic Brands

First Alert Smart-Enabled Water and Freeze Detector

Catches leaks and freezing pipes early and alerts your phone through built-in WiFi, plus a 100-decibel backup alarm.
First Alert MPN RWLD3001-001/U In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $66.99. Our online price is $74.99.
$74.99
Free shipping on orders over $75
Ships within 24 hours · most orders arrive in about 2 business days

About Product Overview

This First Alert detector keeps watch over the spots where leaks and frozen pipes cause the most damage - basements, crawl spaces, utility rooms, and anywhere near a sump pump or water heater. Built-in WiFi connects it to your phone, so you get an alert the moment it senses water or a temperature drop that signals freezing pipes, whether you're home or away. A 100-decibel alarm backs up the app notification for anyone within earshot.

  • Built-in WiFi for remote smartphone alerts
  • Detects both water leaks and freezing temperatures
  • 100-decibel built-in alarm
  • Battery powered, compact 3.9" size
  • 2-year manufacturer warranty

The Details Specifications

Brand First Alert
UPC 194159013704
Case Pack Quantity 4 per case
Retail Unit Quantity 1
Dimensions (L × W × H) 3 × 5 × 5
Weight 0 lbs
Country of Origin TAIWAN
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to open the other tab. Everybody does. We'd rather say so than pretend otherwise — so open it. We'll wait.

When you're over there, check four things before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for First Alert. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

We're not always the cheapest.

Sometimes you'll find it for less. Sometimes you'll find it for more. On a lot of brands the number is identical everywhere it's sold legitimately — the manufacturer sets a minimum advertised price and every authorized dealer holds it. When a price sits well under that, it's worth asking why before it's worth celebrating.

How pricing actually works
Authorized dealer · First Alert

Or skip both tabs and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare