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.

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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

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

Product ID: 185757315

Details

Brand
YoLink
Color
White
Compatible Devices
YoLink Hub
Power Source
Battery
Product Dimensions
2.4"L x 2.4"W

📡¼ mile LoRa range

🔋5+ years battery life

🔒Encrypted, no WiFi needed

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353.79 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Stay dry, stay connected — even when WiFi fails!

SMART ALERTS AUTOMATION - Receive instant SMS, email, and push notifications plus Alexa & IFTTT integration for seamless smart home control.
RELIABLE OFFLINE OPERATION - Patented device-to-device pairing keeps sensors active even during WiFi, internet, or power outages.
BATTERY POWERED PEACE OF MIND - Includes 6 AAA batteries with over 5 years of life—no frequent replacements, no interruptions.
UNMATCHED LONG RANGE COVERAGE - LoRa tech delivers up to 1,320 feet open-air range—perfect for basements, garages, and remote spots.
SET IT FORGET IT INSTALLATION - Instant setup with no WiFi hassles—just place near vulnerable water sources and relax.

The YoLink Water Leak Sensor 3-Pack uses industrial-grade LoRa technology to provide ultra-long-range, encrypted water leak detection without relying on WiFi or internet. Designed for effortless installation near any water source, it offers real-time alerts via SMS, email, and push notifications, plus smart home integration with Alexa and IFTTT. Powered by included AAA batteries lasting over 5 years, these sensors ensure continuous protection—even during power or network outages—making it the ultimate smart home safeguard against costly water damage.

Specifications

ASIN	B083Z5Z9HM
Battery Description	Alkaline
Best Sellers Rank	#1,039 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 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 (6,767)
Item Dimensions L x W x H	2.4"L x 2.4"W x 2.4"H
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.
Power Source	Battery Powered
Sensor Technology	Water Leak Sensor Technology
Smart Home Compatibility	Smart Home Compatible
UPC	750258361643
Voltage	3 Volts

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