Does the entire cable detect water or just the tip on the end?

The sensor cable of the YoLink Water Leak Sensor 2 detects water along the length of the cable. For more information, please kindly refer to the following guide http://www.yosmart.com/support/YS7904-UC/docs/instruction

I plan to submerge v3 type of the sensor in the sump pump. I wonder if the "dirty" water will corrode/damage the sensor?

It is possible for the probe cable to get a build-up that can slow the response time, particularly slow drying (as the gunk on it might hold moisture). For this application, I recommend wiring our sensor to a float switch. It will work great, even in a dirty water environment. We do not suggest any particular model. Most of them are interchangeable by flipping the float around 180° but you want one that has closed contacts when in the water-detected/high position, for it to give you a "water detected" indication on the app. It is possible to work with the opposite (open) and get the desired response and notifications in automation settings but the app will display it as no-water when you have water at the float. Eric with YoSmart

How many sensors can i "pair" with one hub? i have 3 basements that i need to monitor. or do i need a hub for each sensor?

128 pairs! You will need a hub at each building, but unless you have a very large building, or a lot of RF obstructions, you should be fine with just one hub. Eric with YoSmart

Will laying this cable on a conducting metal surface trigger the alarm? I.e. inside a water heater pan?

No, the metal will not impact its operation. Do keep in mind, the sensor body should not get wet. That has to stay outside the pan. You might consider instead our Water Leak Sensor 1. You can look at customer-submitted photos and find several instances of this sensor being placed in a water heater or air conditioner pan. https://www.amazon.com/dp/B07Z7QWJBP?ref=myi_title_dp&th=1

Desertcart Logo

Deliver to Belarus

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

💧 Stay dry, stay smart — the ultimate water leak guardian for your home!

INSTANT FLOOD ALERTS - Receive real-time smartphone notifications, SMS, and emails to stop water damage before it starts.
POWERFUL BUILT IN SIREN - 105dB alarm ensures immediate on-site awareness, even if you’re away from home.
UNMATCHED LONG RANGE COVERAGE - Industry-leading 1,320 feet wireless range powered by LoRa tech—perfect for basements, garages, and remote outbuildings.
SEAMLESS SMART HOME INTEGRATION - Works effortlessly with Alexa and IFTTT for automated home protection tailored to your lifestyle.
EFFORTLESS SETUP VERSATILE PLACEMENT - Compact, battery-powered design with a 4.2 ft sensor cable (extendable to 10 ft) for easy installation anywhere water threatens.

The YoLink Water Leak Sensor 2 is a cutting-edge smart home device featuring the world’s longest wireless range of 1/4 mile via LoRa technology, a powerful 105dB built-in siren, and real-time alerts through the YoLink app. Designed for indoor use, it monitors water presence or absence with a flexible sensor cable and integrates seamlessly with Alexa and IFTTT. Ideal for protecting basements, laundry rooms, garages, and remote buildings, it offers professional-grade flood detection and peace of mind for modern homeowners.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

795 Br

Duties & taxes incl.

Belarusstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

View all Trustpilot reviews

Battery Description	2 AAA batteries
Number of Batteries	2 AAA batteries required. (included)
Voltage	3 Volts
Control Method	App
Noise Level	105 dB
Mounting Type	Wall Mount
Maximum Range	1.32E+3 Feet
Sensor Technology	Rope Sensor
UPC	850024791091
Manufacturer	YOSMART
Model number	YS7904-UC
Item Weight	90 g
Product Dimensions	8.31 x 1.5 x 3.1 cm; 90 g
Batteries	2 AAA batteries required. (included)
Item model number	YS7904-UC
Item Height	3.1 Centimeters
Item Width	1.5 Centimeters
Battery type	2 AAA batteries
Are batteries included?	Yes

YoLink Water Leak Sensor 2 - 1/4 Mile World's Longest Range Smart Home Detector With Built-in Siren Up to 105dB, Compatible with Alexa and IFTTT - YoLink Hub Required, YS7904-UC

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions