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

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

Help Track order

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NZ$161

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

💧 Stay dry, stay connected—without the WiFi drama!

UNMATCHED LONG RANGE COVERAGE - LoRa tech delivers up to 2034 feet of reliable, obstruction-penetrating signal—perfect for basements, garages, and remote spots.
POWER THAT LASTS HALF A DECADE - Includes replaceable AAA batteries with an industry-leading 5+ year lifespan—no frequent changes needed.
SEAMLESS SMART HOME INTEGRATION - Works with YoLink Hub for real-time alerts via app, SMS, and email—stay ahead of leaks wherever you are.
SET IT FORGET IT INSTALLATION - Instant setup with no wiring—just place near vulnerable water sources and relax.
WI FI FREE INTERNET FREE SECURITY - Operates independently of your home network, ensuring leak alerts even during outages or flaky WiFi.

The YoLink Water Leak Sensor 3-Pack uses advanced LoRa technology to provide ultra-long-range, encrypted water leak detection without relying on WiFi or internet. Each sensor offers up to 5 years of battery life and installs in seconds, making it ideal for monitoring water leaks in hard-to-reach or WiFi-challenged areas. Compatible with the YoLink Hub, it delivers instant alerts via mobile app, SMS, and email, ensuring proactive protection for your home or business.

Specifications

ASIN	B083Z5Z9HM
Battery Description	Alkaline
Best Sellers Rank	#2,528 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Water Detectors & Alarms
Brand	YoLink
Color	White
Compatible Devices	YoLink Hub
Control Method	App
Customer Reviews	4.6 out of 5 stars 6,907 Reviews
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
Product Dimensions	2.4"L x 2.4"W x 2.4"H
Sensor Technology	Water Leak Sensor Technology
UPC	750258361643
Voltage	3 volts

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NZ$161

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

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

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YoLink Water Leak Sensor 1, 3-Pack, YS7903

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Description

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Common Questions