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  • YoLink Water Leak Starter Kit: Hub + 4 Leak Sensor 1 (Silent), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline Triggers, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant
  • When it comes to water leaks, don't just detect. Protect. Yosmart
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YoLink Water Leak Starter Kit: Hub + 4 Leak Sensor 1 (Silent), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline Triggers, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant

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About this item

  • Complete plug-and-play kit: hub plus Leak Sensor 1 units for whole-home coverage at toilets, sinks, water heaters, laundry, dishwashers, and sump areas.
  • Long-range LoRa: reliable coverage where Wi-Fi struggles (up to 1/4-mile open air); get app, email, and SMS/text alerts and name sensors by location.
  • Works even without internet: with YoLink Control-D2D, sensors can directly trigger YoLink sirens or shutoff valves for local protection during outages.
  • Silent design: Leak Sensor 1 has no built-in siren; add SpeakerHub or a YoLink siren for audible or spoken alerts if desired.
  • Scalable IoT platform: one hub supports 300+ YoLink devices; part of a whole smart home/building ecosystem; hub options include standard Hub, SpeakerHub, and Cellular Hub.

Additional Details

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From the brand

Product description

Choose the Right Leak Sensor for YouChoose the Right Leak Sensor for You

Choose the Right Leak Sensor for You

YoLink offers two leak sensors for different needs. Water Leak Sensor 1 is a quiet, discreet option that relies on phone notifications. Water Leak Sensor 4 adds a loud built-in siren, making it ideal for high-risk areas like basements or garages. Both connect to the YoLink Hub for instant alerts.

5 Years, Zero Worries5 Years, Zero Worries

5-Year Battery Life

Runs on 2 AAA batteries (included) for up to 5 years of nonstop leak protection.

LoRa Long-Range SignalLoRa Long-Range Signal

LoRa Long-Range Signal

Stays connected up to 1/4 mile, even through walls and floors where WiFi fails.

IP68 Waterproof BuildIP68 Waterproof Build

IP68 Waterproof Build

Fully sealed design survives direct water contact, perfect for damp or flood-prone areas.

Smart Alerts & IntegrationsSmart Alerts & Integrations

Smart Alerts & Integrations

Receive instant app, SMS, or email alerts. Works with Alexa, IFTTT, Home Assistant, and more.

Works Even Without WiFi or PowerWorks Even Without WiFi or Power

Works Even Without WiFi or Power

Power down? WiFi out? No problem. With YoLink’s D2D direct control, Leak Sensors continue to work seamlessly with YoLink Smart Valves and Water Meters, shutting off water the moment a leak is detected—no cloud, no delay, no worries.

300+ Devices, Any Building Size300+ Devices, Any Building Size

300+ Devices, Any Building Size

1 YoLink Hub supports over 300 devices with long-range LoRa, ideal for large homes and even high-rise buildings. Reliable coverage where WiFi fails.

Readius for Business-Grade SolutionsReadius for Business-Grade Solutions

Readius for Business-Grade Solutions

Manage multiple YoLink systems across properties with Readius, a cloud platform for centralized monitoring, alerts, and reporting at scale.

Easy Setup in Just MinutesEasy Setup in Just Minutes
More Than Leak Sensors – A Complete Smart HomeMore Than Leak Sensors – A Complete Smart Home

Product information

Technical Details

Battery Description ‎AAA
Number of Batteries ‎8 AAA batteries required. (included)
Voltage ‎3 Volts
Control Method ‎App
Mounting Type ‎Wall Mount,Floor Mount
Maximum Range ‎1320 Feet
Sensor Technology ‎Contact Sensor
UPC ‎850024791565
Smart Home Compatibility ‎Smart Home Compatible
Manufacturer ‎YoSmart
Part Number ‎YS1603+4YS7903
Item Weight ‎1.34 pounds
Product Dimensions ‎8 x 2 x 4 inches
Item model number ‎YS1603+4YS7903
Batteries ‎8 AAA batteries required. (included)
Included Components ‎Batteries
Batteries Included? ‎Yes
Batteries Required? ‎Yes
Battery Cell Type ‎Alkaline
Description Pile ‎AAA

Additional Information

ASIN B084WYB8PM
Best Sellers Rank
Date First Available February 29, 2020

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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YoLink Water Leak Starter Kit: Hub + 4 Leak Sensor 1 (Silent), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline Triggers, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant

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Product Summary: YoLink Water Leak Starter Kit: Hub + 4 Leak Sensor 1 (Silent), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline Triggers, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant

From YoLink

1K+ bought in past month

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About this Item

  • Complete plug-and-play kit: hub plus Leak Sensor 1 units for whole-home coverage at toilets, sinks, water heaters, laundry, dishwashers, and sump areas.
  • Long-range LoRa: reliable coverage where Wi-Fi struggles (up to 1/4-mile open air); get app, email, and SMS/text alerts and name sensors by location.
  • Works even without internet: with YoLink Control-D2D, sensors can directly trigger YoLink sirens or shutoff valves for local protection during outages.
  • Silent design: Leak Sensor 1 has no built-in siren; add SpeakerHub or a YoLink siren for audible or spoken alerts if desired.
  • Scalable IoT platform: one hub supports 300+ YoLink devices; part of a whole smart home/building ecosystem; hub options include standard Hub, SpeakerHub, and Cellular Hub.

Product Description

Protect your home from costly water damage with the YoLink Smart Home Leak Detection Starter Kit. This complete system includes a YoLink Hub and 4 water leak sensors, powered by advanced LoRa long-range wireless technology. With coverage up to ¼ mile in open air, YoLink outperforms WiFi or Bluetooth sensors, making it ideal for hard-to-reach areas like basements, garages, or sheds. When leaks are detected, you’ll get instant alerts via app push, SMS, or email—whether you’re at home or away. The kit integrates seamlessly with Alexa, IFTTT, Home Assistant, and more, letting you automate shutoff valves or alarms for proactive protection. Each sensor runs on 2 AAA batteries (included), with LoRa’s low-power design ensuring up to 5 years of service life. Installation is quick and easy: place sensors under sinks, near dishwashers, washing machines, water heaters, or sump pumps. Choose YoLink’s reliable leak detection system for always-on protection and total peace of mind.

Important Information

Bulb Voltage

3 volts

Product Guidance & Documents

User Guide (PDF)

User Manual (PDF)

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