Is there any way to use the water leak sensor without buying an hub? I have Amazon Echo, would that work?

Sorry, no. YoLink Hub is required to set up YoLink Smart Water Leak Sensor. You can order YoLink Smart Hub from the link https://www.amazon.com/dp/B07TQLKQLJ or you can order our Smart Home Security Start kit which includes this Smart Leak Sensor, Link: https://www.amazon.com/dp/B07V246GCX

Is there an audible water leak alarm without using the app? Onboard alarm?

1. For the waterproof function of the product, we do not have a sound function for YoLink Smart Water Leak Sensor; 2. We will release a YoLink Siren soon which can connect multiple YoLink water leak sensors and other YoLink safety devices, with long distance coverage and alarm even without network connection; 3. Because of the long coverage distance of YoLink products, even if there is sound in the sensors, we still can't hear it, Alerting user's Smart Phone is more important. What's more, our YoLink Siren is even more comprehensive. 4. Reduce its own sound function, which can be waterproof and lower power consumption. The battery life of YoLink Water Leak Sensor can last for more than 5 years.

can I use to turned a switched off if it detects a tank reached a level of water?

You will need a yolink outlet or a yolink wifi togle switch ( depending on the device you are wanting it to turn off ) to link the water sensor together. Then set an "if" scenario and you should be good to go.

why is there such a stark difference in battery life between water sensor 1 vs 2? version 1 is up to 5 years while version 2 only up to 2 years

Water Leak Sensor 2 has a sounder. You can optionally turn off the sounder, but since that draws current from the batteries, it is factored into the battery calculations we used. We tend to lean towards the more worse-case scenario (more frequent use, with sounder enabled) but your experience with it will vary and it could very well be closer to 4 years than 2. Eric with YoSmart

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1/4 Mile Super Long Range Wireless Leak Sensor LoRa enabled Smart Water Leak Detector Alert Notification App Alerts History Logs Sensor with Sensitive Leak Probes, YoLink Hub Required

Product ID: 364718003

Details

Brand
YoLink
Item dimensions L x W x H
6.2 x 6.2 x
Item weight
0.08 Kilograms
Material
Plastic
Style
0dB without

📡¼ mile LoRa range

🔋5+ years battery life

🔒Encrypted offline comms

₪153

Duties & taxes included

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Sold byAmazon IsraelDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚨 Stay leak-proof, even when WiFi drops—because your peace of mind deserves industrial-grade reach!

ULTRA LOW MAINTENANCE - Includes 2 AAA batteries with 5+ years life—no constant recharging or replacements needed.
RELIABLE OFFLINE OPERATION - Patented device-to-device pairing keeps alerts flowing even if WiFi, internet, or power fail.
SMART ALERTS ON YOUR TERMS - Instant app notifications, SMS, and optional alarms keep you in the know wherever you are.
UNMATCHED LONG RANGE COVERAGE - LoRa tech delivers up to ¼ mile open-air range—perfect for basements, garages, and remote spots WiFi can’t reach.
SET IT FORGET IT INSTALLATION - Plug-and-play design installs in seconds—just place near vulnerable water sources and relax.

The YoLink 1/4 Mile Super Long Range Wireless Leak Sensor uses advanced LoRa technology to provide industry-leading 400-meter range and secure, encrypted communication without relying on WiFi or internet. Designed for easy installation near water sources, it offers reliable leak detection with instant app and SMS alerts. Powered by included AAA batteries lasting over 5 years, it ensures continuous operation even during power or network outages when paired with the YoLink Hub (sold separately). Ideal for smart homes and businesses seeking robust, low-maintenance water leak protection.

Specifications

ASIN	B07Z7QWJBP
ASIN	B07Z7QWJBP
Batteries	2 AAA batteries required. (included)
Best Sellers Rank	#45,474 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #100 in Motion Detectors
Brand Name	YoLink
Current Rating	3 Microamps
Customer Reviews	4.6 4.6 out of 5 stars (755)
Customer reviews	4.6 4.6 out of 5 stars (755)
Date First Available	6 November 2019
Included Components	Valve Controller
Item Dimensions	6.2 x 6.2 x 2.4 centimeters
Item Type Name	Water Leak Sensor
Item Weight	0.08 Kilograms
Item model number	YS7903
Manufacturer	YoLink
Manufacturer	YoLink
Material Type	Plastic
Model	YS7903
Mounting Type	Protruding
Number of Items	1
Part Number	YS7903
Product Dimensions	6.2 x 6.2 x 2.44 cm; 80 g
Sensing Distance	0.25 Miles
Specific Uses For Product	Amateur, Inside, Professional, indoor use only
Style Name	0dB, without hub
UPC	850024791480 750258361438
Unit Count	1 Count

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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.

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TrustScore 4.5 | 7,300+ reviews

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₪153

Duties & taxes included

In stock

Sold byAmazon IsraelDelivered 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 Israel.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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