---
product_id: 353334502
title: "Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required"
brand: "yolink"
price: "฿5790"
currency: THB
in_stock: true
reviews_count: 5
category: "Yo Link"
url: https://www.desertcart.co.th/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4
store_origin: TH
region: Thailand
---

# ¼ mile LoRa range 5+ years battery life Encrypted device-to-device Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required

**Brand:** yolink
**Price:** ฿5790
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay connected—leak detection that’s miles ahead!

## Quick Answers

- **What is this?** Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required by yolink
- **How much does it cost?** ฿5790 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4)

## 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

- • **Smart Alerts Anywhere:** Receive instant SMS, email, and push notifications plus Alexa & IFTTT integration for seamless smart home control.
- • **Ultra-Low Maintenance:** Includes 2 AAA batteries lasting over 5 years—no frequent replacements, no hassle.
- • **WiFi & Internet Independent:** Operates flawlessly even during WiFi outages or power failures thanks to patented Control-D2D pairing.
- • **Unmatched Long-Range Coverage:** LoRa tech delivers up to 1,320 feet open-air range—perfect for basements, garages, and outbuildings beyond WiFi reach.
- • **Set It & Forget It Installation:** Instant setup with no wiring—just place near vulnerable spots and gain instant leak protection.

## Overview

The YoLink Water Leak Sensor 3-Pack uses industrial-grade LoRa technology to provide an ultra-long ¼ mile wireless range with encrypted device-to-device communication, ensuring reliable leak detection even without WiFi or internet. Easy to install and powered by long-lasting AAA batteries, it sends instant alerts via SMS, email, and push notifications, integrating smoothly with Alexa, IFTTT, and Home Assistant for proactive home protection.

## Description

Water Leak Sensor

Review: 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: After having constant issues with the Guardian water leak detection system, I was on the hunt for a more reliable and user-friendly alternative, and I’m so glad I found the YoLink Smart Water Valve Controller! The installation was a breeze, taking me around 30 minutes to set up the controller, and a bit more time to configure and place 16 leak detectors around the house. The process was straightforward and easy, even without the need for a plumber – it's truly DIY-friendly. Now, comparing this to the Guardian system is like night and day. The Guardian was a headache, constantly failing, poorly designed, and honestly, it cost a fortune. Each Guardian controller was $50, and they kept failing on me. With YoLink, I’ve found a much more reliable and cost-effective solution that works exactly as advertised. Setting up the YoLink system was incredibly intuitive. The app is user-friendly, and I was able to easily configure the settings, including the wireless range, which works flawlessly. Even with multiple walls between devices, the system remained reliable with no drop in connection. It’s great to have peace of mind knowing that everything is connected, and I can manage it all from my phone. One tricky part for me was figuring out how to automatically trigger the water valve to close when a leak is detected, but I solved that by using the Automation tab in the app. Once I set up the events, the system worked perfectly. Thankfully, I didn’t need to watch the instructional videos since I’m already familiar with these kinds of systems. I’m beyond impressed with how well this system works. It’s easy to update and configure, and I now have total peace of mind knowing my home is protected against water leaks. If you’re tired of dealing with a poorly designed, expensive system like I was, I highly recommend the YoLink Smart Water Valve Controller! It’s been a total game changer for me. **A++++ – Highly Recommended!**

## 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 |
| ASIN  | B083Z5Z9HM |
| Batteries | 6 AAA batteries required. |
| Batteries  | 6 AAA batteries required. |
| Batteries Included? | No |
| Batteries Required? | No |
| Battery Cell Type | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | #68,143 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #218 in Safety Sensors & Detectors |
| Color | White |
| Control method | App, Voice |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,323) |
| Customer reviews | 4.7 4.7 out of 5 stars (1,323) |
| Date First Available | 28 February 2020 |
| Date First Available  | 28 February 2020 |
| Included components | Detector |
| Item Package Quantity | 1 |
| Item Weight | 249 g |
| Item model number | YS7903 |
| Item model number  | YS7903 |
| Manufacturer | YoLink |
| Manufacturer  | YoLink |
| Maximum range | 1320 Feet |
| Mounting type | Tabletop Mount |
| Number of batteries | 6 AAA batteries required. |
| Part number | YS7903-UC*3 |
| Product Dimensions | 6.4 x 6.4 x 2.5 cm; 249 g |
| Product Dimensions  | 6.4 x 6.4 x 2.5 cm; 249 g |
| Sensor technology | Water Leak Sensor Technology |
| UPC | 750258361643 |
| Voltage | 3 Volts |
| tech_spec_battery_description_toys | Alkaline |

## Product Details

- **Brand:** YoLink
- **Colour:** White
- **Compatible devices:** Smartphone
- **Power source:** Battery Powered
- **Product dimensions:** 6.4L x 6.4W x 2.5H centimeters

## Images

![Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required - Image 1](https://m.media-amazon.com/images/I/519l0Q74TDL.jpg)

## Questions & Answers

**Q: Can you replace the batteries?**
A: Yes, there are rubber tips on the 4 corners of the bottom, you can remove them and unscrew 4 screws and open the sensor, to replace two AAA batteries. The battery can run more than 5 years. You can search on YouTube video of how to change the YoLink water sensor's battery and can find the videos. Thanks!

**Q: Is this a dumb proprietary system or does it ingrate with smart home technologies, ie Z-wave Zigbee etc?**
A: It is not Zigbee, WiFi or Z-Wave wireless technologies, all these wireless technologies only work for short range. The YoLink system use the longest wireless range and lower power consumption. It works with the YoLink hub and can be integrate to other system through the Alexa routines, IFTTT or YoLink's API. Thanks!

**Q: Do you have any water leak sensors that have audio as well as the app reminder? Or are these just app reminders?**
A: These 3 pack leak sensors don't have build in audio sound. We have YoLink water leak sensor 2 which has build in sound, both them have app push notifications, emails and text message for leak alert.

**Q: What frimware version do you have on these D or E? Tx**
A: Mine came with 030E installed. The sensors I bought previously had 030D installed and still aren't being offered the 030E update even though they are the exact same model number. I also don't know the difference between 030D and 030E as they don't seem to publish any firmware changelog that I can find.

## Customer Reviews

### ⭐⭐⭐⭐ Review
*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.

### ⭐⭐⭐⭐⭐ Review
*by L***R on 7 March 2025*

After having constant issues with the Guardian water leak detection system, I was on the hunt for a more reliable and user-friendly alternative, and I’m so glad I found the YoLink Smart Water Valve Controller! The installation was a breeze, taking me around 30 minutes to set up the controller, and a bit more time to configure and place 16 leak detectors around the house. The process was straightforward and easy, even without the need for a plumber – it's truly DIY-friendly. Now, comparing this to the Guardian system is like night and day. The Guardian was a headache, constantly failing, poorly designed, and honestly, it cost a fortune. Each Guardian controller was $50, and they kept failing on me. With YoLink, I’ve found a much more reliable and cost-effective solution that works exactly as advertised. Setting up the YoLink system was incredibly intuitive. The app is user-friendly, and I was able to easily configure the settings, including the wireless range, which works flawlessly. Even with multiple walls between devices, the system remained reliable with no drop in connection. It’s great to have peace of mind knowing that everything is connected, and I can manage it all from my phone. One tricky part for me was figuring out how to automatically trigger the water valve to close when a leak is detected, but I solved that by using the Automation tab in the app. Once I set up the events, the system worked perfectly. Thankfully, I didn’t need to watch the instructional videos since I’m already familiar with these kinds of systems. I’m beyond impressed with how well this system works. It’s easy to update and configure, and I now have total peace of mind knowing my home is protected against water leaks. If you’re tired of dealing with a poorly designed, expensive system like I was, I highly recommend the YoLink Smart Water Valve Controller! It’s been a total game changer for me. **A++++ – Highly Recommended!**

### ⭐⭐⭐⭐⭐ Review
*by T***Y on 1 December 2025*

Excellent range, excellent battery life, and the on-device siren is a great addition. I don't think anything beats the Yolink ecosystem for ease of use, app user friendliness, battery life, and range.

## Frequently Bought Together

- YoLink Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required
- YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant
- YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-31*