Can you replace the batteries?

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!

Is this a dumb proprietary system or does it ingrate with smart home technologies, ie Z-wave Zigbee etc?

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!

Do you have any water leak sensors that have audio as well as the app reminder? Or are these just app reminders?

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.

What frimware version do you have on these D or E? Tx

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.

Yolink Water Leak Sensor 1 3 Pack Ys7903

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

€ 99.37

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Spain.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

💧 Stay dry, stay smart—leak detection that never sleeps!

ULTRA LOW MAINTENANCE POWER - Includes replaceable AAA batteries that last over 5 years—no frequent charging or replacements needed.
WI FI INTERNET INDEPENDENT - Operates flawlessly even when your WiFi or power fails, ensuring uninterrupted leak detection.
SEAMLESS SMART HOME INTEGRATION - Works with YoLink Hub for real-time alerts via app, SMS, and email—stay connected wherever you are.
SET IT FORGET IT INSTALLATION - Instant setup with no wiring—just place near vulnerable spots and gain peace of mind in seconds.
UNMATCHED LONG RANGE CONNECTIVITY - LoRa tech delivers up to 2034 feet of reliable, obstruction-penetrating signal—perfect for sprawling homes and remote spaces.

The YoLink Water Leak Sensor 3-pack uses industrial-grade LoRa technology to provide up to 2034 feet of wireless range without relying on WiFi or internet. Designed for easy, no-hassle installation, it offers encrypted, reliable communication with the YoLink Hub (sold separately). Powered by included AAA batteries lasting over 5 years, it ensures continuous monitoring and instant alerts via mobile app, SMS, and email, making it ideal for protecting homes and remote properties from water damage.

Specifications

ASIN	B083Z5Z9HM
Battery Description	Alkaline
Best Sellers Rank	#4,422 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #6 in Water Detectors & Alarms
Brand	YoLink
Color	White
Compatible Devices	YoLink Hub
Control Method	App
Customer Reviews	4.6 4.6 out of 5 stars (6,905)
Item Dimensions L x W x H	2.4"L x 2.4"W x 2.4"H
Item Highlight	Leak Alerts via Mobile App, Email and SMS, Up to 5-Year Battery Life, LoRa YoLink Protocol Up to 2034 Feet, Hub Required
Manufacturer	YoSmart
Maximum Range	1320 feet
Mfr Part Number	YS7903-UC*3
Model Number	YS7903
Mounting Type	Tabletop Mount
Number of Batteries	6 AAA batteries required.
Number of Items	3
Power Source	Battery Powered
Sensor Technology	Water Leak Sensor Technology
UPC	750258361643
Voltage	3 volts

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 99.37

Duties & taxes included

In stock

Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Spain.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

YoLink Water Leak Sensor 1, 3-Pack, YS7903

Details

Details

Description

Specifications

Common Questions