---
product_id: 561857534
title: "Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Hub Required!"
brand: "yolink"
price: "C$5994"
currency: NIO
in_stock: true
reviews_count: 8
category: "Yo Link"
url: https://www.desertcart.ni/products/561857534-water-leak-sensor-4-with-105db-audio-alarm-3-pack
store_origin: NI
region: Nicaragua
---

# ¼ mile LoRa range 105dB loud alarm Freeze temperature alert Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Hub Required!

**Brand:** yolink
**Price:** C$5994
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay dry, stay smart — leak alerts that go the distance!

## Quick Answers

- **What is this?** Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Hub Required! by yolink
- **How much does it cost?** C$5994 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/561857534-water-leak-sensor-4-with-105db-audio-alarm-3-pack)

## Best For

- yolink enthusiasts

## Why This Product

- Trusted yolink brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Installation:** Set up in seconds—no WiFi needed, just place near water-prone areas and stay worry-free.
- • **Instant High-Decibel Alerts:** 105dB alarm ensures you never miss a leak, protecting your home from costly water damage.
- • **Unmatched Long-Range Coverage:** LoRa tech delivers up to 1,320 feet open-air range—monitor remote spots effortlessly.
- • **5+ Years Battery Life Included:** Powered by included AAA batteries, enjoy years of reliable protection without frequent replacements.
- • **Freeze Warning for Winter-Proof Safety:** Built-in temperature sensor alerts you before pipes freeze, preventing seasonal disasters.

## Overview

The YoLink Water Leak Sensor 4 3-Pack combines industrial-grade LoRa wireless tech with a powerful 105dB alarm and freeze warnings to protect your home from leaks and frozen pipes. With an impressive ¼ mile open-air range, effortless installation, and over 5 years of battery life included, it’s the ultimate smart water safety solution for modern homes—no WiFi required. Compatible with Alexa and IFTTT, it keeps you connected and in control wherever you are.

## Description

Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Hub Required! - desertcart.com

Review: Already saved me from one flood! - TLDR: These are *AWESOME*!!!!!!!! I have to admit, I was *really* skeptical of the "YoLink" family of products when I bought them. It sounds kind of hoaky and well, I didn't think it would work all that well. BOY, I WAS WRONG! I bought a YoLink Hub with leak sensors and bought this 3-pack to protect extra areas of my home. About a week after installation, they went off when my water heater relief valve let go and the water got shut off immediately so that the flood was very limited in scope. These devices are awesome so far, and I am so glad I have bought them. I also bought sensors for my refrigerators and a water shutoff valve motor that automatically shuts the water off to my house if a leak is detected. I can see the status of my home from anywhere that I have cell signal! Installation: Couldn't be easier. Get the app from the app store, click on the "scan" button and scan a QR code on the back of the device. It gets added to your YoLink Home, and after you power it on, you get instant feedback as to the health of the device, the health of the connection, and the status (alarmed or normal). 10 seconds per device to install. You can name each one, organize them into rooms, and many other options. Function: I tested the leak sensors by licking my fingers and bridging the contacts with my wet finger. Each one I have bought has alarmed on all of the sensors on the device. There are two sensors on the bottom and one on the top (cleverly in a little "cup") that would hold water if it were spraying everywhere. App: The app is pretty decent. I get a dashboard that lets me see my whole home at a glance. There are a few confusing parts, like Scenes, and "Automation" which are not immediately obvious. But they have a few videos that help and their customer service was pretty responsive. Range: I have a sensor in the basement freezer and one in my kitchen refrigerator. While they aren't horribly far from the hub, they have full strength signals despite being in cold temperatures and inside the refrigerator boxes. Battery Life: I cannot comment yet, but they are not replaceable and are supposed to last 5 years. I hope that's true. But even if they last a couple years, the disaster they save you might be worth it. Installed locations: Under each bathroom sink, Under kitchen sink, Under each toilet tank, near my washer and dryer, behind my refrigerator (icemaker has leaked before), Near my boiler, near my water heater, near the A/C condensate pump. Overall, I couldn't be happier with my YoLink system. This was well worth the money, especially since it already saved me from one bad flood.
Review: Work great, set up is a breeze, app is very clear and alerts work as intended. - Love these, altogether I think I’ve purchase about 14 of the pucks and 2 hubs (one as a backup since the combo price was as cheap as buying without another hub).

## Features

- No WiFi Worries: Say goodbye to WiFi dependency! YoLink devices use industrial-grade LoRa protocol for communication, offering an impressive ¼ mile open air range. They don't connect to your network or the internet; they communicate securely with the Hub (Hub not included!). Enjoy obstruction-penetrating, long-range coverage without compromising your privacy.
- Effortless Installation: Set it and forget it! Installing the YoLink wireless Water Sensor takes seconds. Simply place it near or under the equipment you want to monitor. Perfect for toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, sump pumps, and any other water-prone areas.
- Extreme Long Range: Powered by LoRa technology, our system offers the industry's longest receiving range (1/4 mile). Overcome WiFi limitations and monitor areas like basements, outdoor spaces, sheds, garages, and remote outbuildings with ease.
- Powerful 105dB Audio Alarm: Be instantly alerted to potential leaks with our water leak detector's robust 105dB audio alarm. Swiftly respond to emergencies and protect your space from water damage.
- IP66 Waterproof Protection: Designed to endure various conditions, our water leak detector boasts an impressive IP66 waterproof rating. Count on its reliability indoors.
- Built-in Freeze Warning: Equipped with a low temperature sensor, the Yolink Water Leak Sensor not only detects leaks but also alerts you when the temperature drops to freezing levels, helping you prevent frozen pipes and potential damage during colder months.
- Start Smart: A YoLink hub is your gateway to full functionality. Connect with a growing range of smart home and business products. Find our SpeakerHub (B0BZBYD1MK or B09FSS95G9 for audio capabilities) or the original Hub (B08CBTTD17 or B07TQLKQLJ).
- Batteries Included: Enjoy peace of mind for over 5 years with two replaceable AAA batteries included. No need to worry about frequent replacements.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CHS5N68B |
| Batteries | 6 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | #8,548 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #14 in Water Detectors & Alarms |
| Control Method | App |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,441) |
| Date First Available | September 11, 2023 |
| Description Pile | Alkaline |
| Included Components | Batteries |
| Item Package Quantity | 1 |
| Item Weight | 9.5 ounces |
| Item model number | 3YS7906 |
| Manufacturer | YoSmart |
| Maximum Range | 1000 Feet |
| Mounting Type | Tabletop Mount |
| Noise Level | 105 Decibels |
| Number of Batteries | 6 AAA batteries required. (included) |
| Part Number | 3YS7906 |
| Product Dimensions | 7 x 5 x 2.5 inches |
| Sensor Technology | Contact Sensor |
| Style | 105 dB |
| UPC | 810121540961 |
| Voltage | 3 Volts |

## Product Details

- **Battery Description:** Alkaline
- **Brand:** YoLink
- **Color:** 105 dB
- **Compatible Devices:** Smartphone, Tablet
- **Power Source:** Battery Powered

## Images

![Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push Notifications, Freeze Warning, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Hub Required! - Image 1](https://m.media-amazon.com/images/I/51ZMQXAZThL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Already saved me from one flood!
*by K***D on January 18, 2021*

TLDR: These are *AWESOME*!!!!!!!! I have to admit, I was *really* skeptical of the "YoLink" family of products when I bought them. It sounds kind of hoaky and well, I didn't think it would work all that well. BOY, I WAS WRONG! I bought a YoLink Hub with leak sensors and bought this 3-pack to protect extra areas of my home. About a week after installation, they went off when my water heater relief valve let go and the water got shut off immediately so that the flood was very limited in scope. These devices are awesome so far, and I am so glad I have bought them. I also bought sensors for my refrigerators and a water shutoff valve motor that automatically shuts the water off to my house if a leak is detected. I can see the status of my home from anywhere that I have cell signal! Installation: Couldn't be easier. Get the app from the app store, click on the "scan" button and scan a QR code on the back of the device. It gets added to your YoLink Home, and after you power it on, you get instant feedback as to the health of the device, the health of the connection, and the status (alarmed or normal). 10 seconds per device to install. You can name each one, organize them into rooms, and many other options. Function: I tested the leak sensors by licking my fingers and bridging the contacts with my wet finger. Each one I have bought has alarmed on all of the sensors on the device. There are two sensors on the bottom and one on the top (cleverly in a little "cup") that would hold water if it were spraying everywhere. App: The app is pretty decent. I get a dashboard that lets me see my whole home at a glance. There are a few confusing parts, like Scenes, and "Automation" which are not immediately obvious. But they have a few videos that help and their customer service was pretty responsive. Range: I have a sensor in the basement freezer and one in my kitchen refrigerator. While they aren't horribly far from the hub, they have full strength signals despite being in cold temperatures and inside the refrigerator boxes. Battery Life: I cannot comment yet, but they are not replaceable and are supposed to last 5 years. I hope that's true. But even if they last a couple years, the disaster they save you might be worth it. Installed locations: Under each bathroom sink, Under kitchen sink, Under each toilet tank, near my washer and dryer, behind my refrigerator (icemaker has leaked before), Near my boiler, near my water heater, near the A/C condensate pump. Overall, I couldn't be happier with my YoLink system. This was well worth the money, especially since it already saved me from one bad flood.

### ⭐⭐⭐⭐⭐ Work great, set up is a breeze, app is very clear and alerts work as intended.
*by D***B on January 17, 2026*

Love these, altogether I think I’ve purchase about 14 of the pucks and 2 hubs (one as a backup since the combo price was as cheap as buying without another hub).

### ⭐⭐⭐⭐⭐ AWESOME products - flood sensors worked perfectly on recent water heater expansion tank leak
*by M***P on June 6, 2025*

These are great! I've been using them for years now. I added a hub and sensors to my elderly parents home as well. They think I go over the top with tech but just a few weeks ago I got a phone call from them. While they were at my dads cancer treatment center, they were getting an alert from one of their leak sensors in their garage. I drove over to check for them and sure enough, the water heater had just barely begun to leak! The leak was so small in fact, I had to pick up the sensor to see the tiny bit of water. I had the sensor sitting in the pan they typically put the water heater in. They were pretty happy I had installed the sensors and now really see how items like this can save you from a flood or worse. And when the new water heater was installed, the sensor wouldn't fit in the new/smaller pan they used. YoLink also has a rope water sensor which is PERFECT for this. I ordered two. They have a length of rope-like wire you can drape around things. You can even add extra lengths of the wire to extend it if needed. I'll also say that over the years YoLink support has been awesome and it looks like the company just keeps growing, releasing better and better products as they listen to their customers to keep producing useful items. I also have the water shutoff valve which I haven't installed yet but will be, along with some temperature sensors (great for hurricane areas/power outages when you don't know how long the refrigerator may have been turned off for, to know if your food has spoiled), the siren, speakerhub, garage door sensor, magnet door/window sensors.. I have the floating water temp sensor in their in-ground pool so they dont have to bend all the way down to pull up an old school thermometer (hard to read) from a string. With the YoLink temp sensor, they just look at their phone and can get alerts for low/high temps so they can turn their solar heat on or off. I really can't say enough good things about their products. Great job YoLink!

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-22*