---
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: "S/.641"
currency: PEN
in_stock: true
reviews_count: 7
category: "Yo Link"
url: https://www.desertcart.pe/products/696612270-yolink-3-pack-smart-water-leak-sensor-1-4-mile
store_origin: PE
region: Peru
---

# 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:** S/.641
**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?** S/.641 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/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 2034 feet 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 (2034 feet). 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
- Hub Not Included. Hub Sold Separately.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083Z5Z9HM |
| Battery Description | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | 648,169 in DIY & Tools ( See Top 100 in DIY & Tools ) 277 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 1,000 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/71u0Z4I9hzL.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!

### ⭐⭐⭐⭐⭐ Own a home? BUY THESE, YOUR FUTURE SELF WILL THANK YOU.
*by K***N on 14 September 2026*

TLDR: If you own a home, you NEED these. Plain and simple. Buy them, set them up, forget about them, and they will save your ass WHEN something leaks. Because eventually, something WILL leak. As a first time home buyer, I got paranoid about the stuff I couldn't control. What happens when the sink, the dishwasher, the water heater, the fridge, or anything else decides to leak while I'm asleep or away from home? I did some research and found these YoLink leak detectors. They have saved my ass multiple times and have EASILY saved me 10's of thousands of dollars by telling me about a leak the second it started, instead of days later when I happened to walk by and notice it. Example: I had a sensor in the basement next to my water heater and sump pump. We got 6 inches of rain overnight and one of my sump pumps failed. At 2am this thing went off and woke me up (via 'priority notifications' on the iPhone, sends a loud alert even if your phone is on silent). I ran downstairs and found water already seeping into the basement in a couple of spots, and it was coming in FAST. I got the pump running again, rode out the storm, and replaced the pump once things calmed down. Without that sensor, I would have slept straight through it and woke up to ankle deep water and tens of thousands of dollars in remediation. Instead, I was out a new sump pump and a few hours of sleep. Setup is extremely simple. Order the hub with a few sensors, connect the hub to your wifi/ethernet, stick the sensors under anything that can leak, set up your notifications and alarms and you're done. From then on you sleep peacefully knowing that if something leaks, you WILL be notified and you can actually do something about it. No subscriptions or monthly fee BS. You buy them once and they just work. Seriously, order these things. What you spend today is nothing compared to what one missed leak costs you. I've got like 8+ leak sensors all around my home at this point.

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-10-10*