---
product_id: 696612270
title: "YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3)"
brand: "yolink"
price: "$185.66"
currency: USD
in_stock: true
reviews_count: 7
category: "Yo Link"
url: https://www.desertcart.us/products/696612270-yolink-3-pack-smart-water-leak-sensor-1-4-mile
store_origin: US
region: United States of America
---

# ¼ mile LoRa range 5+ years battery life Encrypted device-to-device YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3)

**Brand:** yolink
**Price:** $185.66
**Availability:** ✅ In Stock

## Summary

> 💧 Stay leak-proof, stay worry-free — the smart sensor your home deserves!

## Quick Answers

- **What is this?** YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) by yolink
- **How much does it cost?** $185.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/696612270-yolink-3-pack-smart-water-leak-sensor-1-4-mile)

## 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

- • **Resilient Offline Operation:** Patented Control-D2D pairing keeps sensors active even if WiFi, internet, or power fail.
- • **Unmatched Long-Range Coverage:** LoRa tech delivers up to 1,320 feet of reliable, WiFi-free connectivity—even through walls and basements.
- • **Seamless Smart Home Integration:** Works effortlessly with Alexa, IFTTT, and the YoLink Hub for real-time alerts and control.
- • **Set It & Forget It Installation:** Instant setup with no wiring—just place near vulnerable spots and relax.
- • **Battery Life That Outlasts Your Lease:** Includes replaceable AAA batteries rated for over 5 years of uninterrupted monitoring.

## Overview

The YoLink 3 Pack Smart Water Leak Sensor uses advanced LoRa wireless technology to provide ultra-long-range, low-power, and encrypted water leak detection without relying on WiFi or internet. Designed for easy installation near water-prone areas, it ensures continuous operation even during power or network outages. Compatible with Alexa, IFTTT, and the YoLink Hub, it offers professional-grade smart home integration with batteries included for over 5 years of use.

## Description

YoLink Technology “YoLink'' is a proprietary wireless technology provided by YoSmart. which is based on the Semtech's LoRa wireless technology combined the YoSmart smart home/buiding protocol, to provide most advanced smart home/buidling devices solution. Compared to WIFI, Bluetooth, ZigBee, Z-Wave and other smart home protocol, it has the advantages of low-power consumption, long-distance coverage (wall penetration), and anti-interference. It is first smart building/home protocol which can be very easily setup and is very low cost, but create a reliable, robust and more secure IoT network. Requirements: 1. A YoLink Hub, link 2. Smartphone or tablet able to run iOS 9 or higher or Android 4.4 or higher. Specifications: Product Name: YoLink Smart Water Leak Sensor Product Model: YS7903-UC Voltage: 3V DC (2 AAA battery) Product Model: YS7903-UC Working Temperature: 0°C-50°C (32°F-122°F) Working Humidity: ≤100%RH (non-condensing) Package Content: 3 x YoLink Water Leak Sensor 1 x Quick Start Guide

Review: It is US wifi not Uk - Works well once reset to Europe wifi but it would not connect with their European/UK hub without a fair amount of resetting and liaison with tech support. I was expecting this so was not a problem for me.
Review: Does not work in UK, description not clear - The hub and temperature sensors work well and are connected immediately. I purchased the 3-pack water leak sensors but did not realise the difference between UC and EC on the labels. UC does not work in the UK; you need to buy EC. I contacted tech support, but after an initial hello, I have been ghosted!

## Features

- NO WiFi WORRIES! YoLink devices communicate by LoRa, an industrial-grade protocol that provides up to ¼ mile open air range. Devices do NOT connect to your network or even to the internet; they communicate with the Hub (Not included!). Long range, obstruction penetration, no reliance on WiFi, and fully-encrypted communications provide more than most ask for from their smart home system!
- SET IT & FORGET IT! Installs in seconds! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, in or near sump pumps, and by any other location subject to water leaks and flooding.
- EXTREME LONG RANGE! Powered by LoRa technology, the long-range yet low-power system offers the industry’s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property.
- NO WIFI, NO INTERNET, NO POWER? NO PROBLEM! Our patented Control-D2D device-to-device pairing, over our LoRa-based wireless network, allows for devices to be paired to each other, in such a way they will continue to operate, even if WiFi is flaky, the internet goes down, or the AC power goes out!
- START SMART! A YoLink hub is required for full functionality, including for the app to work, to check battery level, etc, but your hub is compatible with a growing family of smart products for home and business! Search for B09FSS95G9 for a SpeakerHub (our audio, talking hub) or B07TQLKQLJ for the original Hub.
- BATTERIES INCLUDED! Two replaceable AAA batteries, good for over 5 years, are included!
- AVAILABLE AS A STARTER KIT! Search for B0BFR7WJQT

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083Z5Z9HM |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | 630,276 in DIY & Tools ( See Top 100 in DIY & Tools ) 261 in Water Detectors |
| Brand | YoLink |
| Colour | White |
| Compatible Devices | YoLink Hub |
| Compatible devices | YoLink Hub |
| Control Method | App |
| Customer Reviews | 4.7 out of 5 stars 995 Reviews |
| Item Dimensions L x W x H | 6.1L x 6.1W x 6.1H centimetres |
| Manufacturer | YoSmart |
| Maximum Range | 1320 Feet |
| Model Number | YS7903 |
| Mounting Type | Tabletop Mount |
| Number of Batteries | 6 AAA batteries required. |
| Number of Items | 3 |
| Part Number | YS7903-UC*3 |
| Power source | Battery Powered |
| Product dimensions | 6.1L x 6.1W x 6.1H centimetres |
| Sensor Technology | Water Leak Sensor Technology |
| UPC | 750258361643 |
| Voltage | 3 Volts |

## Product Details

- **Colour:** 105 Db
- **Brand:** YoLink
- **Power source:** Battery Powered
- **Compatible devices:** Smartphone, Tablet
- **Battery description:** Alkaline

## Images

![YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) - Image 1](https://m.media-amazon.com/images/I/519l0Q74TDL.jpg)
![YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) - Image 2](https://m.media-amazon.com/images/I/71XK5Nsf+2L.jpg)
![YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) - Image 3](https://m.media-amazon.com/images/I/91l2SvJ12JL.jpg)
![YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) - Image 4](https://m.media-amazon.com/images/I/91LHH3saJXL.jpg)
![YoLink 3 Pack Smart Water Leak Sensor, 1/4 Mile Range, Alexa & IFTTT Compatible, App Notifications - Hub Required (YS7903-UCx3) - Image 5](https://m.media-amazon.com/images/I/81JcP6Jgu2L.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐ It is US wifi not Uk
*by M***L on 9 July 2024*

Works well once reset to Europe wifi but it would not connect with their European/UK hub without a fair amount of resetting and liaison with tech support. I was expecting this so was not a problem for me.

### ⭐ Does not work in UK, description not clear
*by J***. on 4 February 2025*

The hub and temperature sensors work well and are connected immediately. I purchased the 3-pack water leak sensors but did not realise the difference between UC and EC on the labels. UC does not work in the UK; you need to buy EC. I contacted tech support, but after an initial hello, I have been ghosted!

### ⭐⭐⭐⭐⭐ More Sensors, More Coverage, Less Stress
*by D***E on 27 March 2026*

If you are running the YoLink system, buying more sensors is not a maybe it is a must. I picked up this 3 pack to cover the rest of the house and it was a no brainer. Setup took minutes, they synced right up, and now every risk area is covered. Under sinks, water heater, laundry, you name it. These things catch leaks fast and alert you within seconds through the app. Pair that with the automatic shut off and you are basically shutting down problems before they turn into expensive lessons. The range is legit too. No signal issues, no drop offs, just solid performance. At this point, if water gets loose in my house, it is going to have a bad day not me. Bottom line, if you already have the system, do not cut corners. Get the sensors and cover everything.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-11*