Updated: June, 2025

Best battery operated water sensors

Save up to 60% Off

1

YoLink

9.9

Exceptional

YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant

34% Off

Why we love it

Easy setup with Ethernet and WiFi options.

Long-range coverage up to 1/4 mile.

Responsive customer support.

Main highlights

Comprehensive Smart Home Integration
Supports over 300 devices, works with Alexa and IFTTT.

Ideal for Leak-Prone Areas
Perfect for basements, bathrooms, and laundry rooms.

Reliable Leak Detection Notifications
Customers praise timely alerts via email and app.

More info
How do we rank?

How do we rank
Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
2

VKIMISS

9.8

Exceptional

Battery Operated Cat Water Fountain: Wireless Pet Fountain Stainless Steel with Filter - 108oz/3.2L Cordless Cat Dispenser with Motion Sensor Rechargeable Automatic Drinking Fountains for Cats Indoor

20% Off

Main highlights

Stainless Steel Drinking Tray: The battery water fountain for cats comes with a stainless steel water tray and plastic bucket that is not only durable and not easily damaged, but can also be sterilized at high temperatures. This means you can provide your cats with a safer and more hygienic to drink option that helps protect their health and reduce health issues caused by water quality problems

Long-lasting Battery: The water fountain for cats indoor comes with a powerful 4000mAh rechargeable built-in battery that can continuously supply fresh, clean water for up to 45 days on a single full charge in timer mode. cat fountain wireless is not only convenient for daily use, but also ensures that your cat stays hydrated while you are at work or on a short trip, allowing pet owners to go out without worry

Cordless, Flexible Placement: Say goodbye to the clutter of tangled wires and enjoy the freedom of placing the VKIMISS wireless cat fountain anywhere in your home. This cat water fountains ensures your beloved cats have access to fresh water at all times, while also preventing the safety hazards of pets chewing on wires

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3

Geevon

9.7

Exceptional

Geevon 2 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages, and Attics, Water Alarms Battery-Operated (Battery Included)

Why we love it

Loud alarm alerts entire home.

Easy placement in tight spaces.

Simple screw-on design.

Main highlights

Loud 100dB Alarm for Quick Alerts
Ultra-loud 100dB alarm ensures you hear leaks immediately, preventing potential water damage.

Ideal for Basements and Bathrooms
Perfect for basements, bathrooms, and under sinks to detect leaks early and prevent flooding.

User-Friendly Screw-On Design
Customers love the easy screw-on top, making battery changes hassle-free.

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4

THE BASEMENT WATCHDOG

9.6

Exceptional

THE BASEMENT WATCHDOG Model BWD-HWA 110 dB Battery Operated Water Alarm

37% Off

Why we love it

Detects small water levels quickly.

Loud alarm alerts effectively.

Flexible installation options.

Main highlights

Sensitive Detection
Detects as little as 1/32 inch of water, offering a reliable early warning.

Versatile Installation
Ideal for basements, under sinks, and around water heaters.

Customer Praise for Loud Alarm
Users appreciate the 110 dB alarm, heard throughout the house.

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5

Topvico

9.5

Excellent

Topvico Water Leak Sensor Detector Flood Alarm for Basement RV Moisture 120dB Work Alone Battery Operated 3 Packs

30% Off

Why we love it

Very loud alarm at 120dB.

Easy installation with included adhesive.

Versatile for various water-prone areas.

Main highlights

Loud 120dB Alarm
Provides a powerful 120dB alarm to alert users of water leaks, ensuring prompt attention to prevent damage.

Versatile Use Cases
Ideal for basements, washing machines, sump pumps, and other areas prone to water leaks.

Highly Sensitive Detection
Customers praise its high sensitivity, ensuring reliable detection of even minor water presence.

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6

Flood Buzz

9.3

Excellent

Flood Buzz Small Model 3-Pack | Water Leak Detectors for Home, Business, Apartment, Facility & RV Protection | Use Under Sinks & w/Appliances | Reusable Water Leak Detector w/Pre-Installed Battery

Why we love it

No setup required, use out of the box.

Detects leaks in various home areas.

Loud alarm alerts immediately to leaks.

Main highlights

Easy Setup and Long-lasting
Factory-installed battery, no setup needed, lasts up to 3 years.

Ideal for High Moisture Areas
Perfect for bathrooms, kitchens, basements, and near appliances.

Immediate Loud Alert
95 dB alarm ensures you hear leaks immediately, saving costs.

More info
7

METAK

9.1

Excellent

Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Adjustable Wet Moisture Alert Pipe Leakage Drip Detection Warning for Basement Floor

16% Off

Why we love it

Easy setup and use.

Loud 100dB alarm.

Long battery life.

Main highlights

Wireless Design & Easy Setup
No wires or setup required; place anywhere prone to leaks.

Ideal for High Humidity Areas
IP66 waterproof rating ensures reliable use in wet environments.

Highly Praised for Loud Alarm
100dB alarm effectively alerts you to leaks, ensuring prompt action.

More info
8

WER

9.0

Excellent

WER Water Leak Alarm Sensor, Battery Operated Leak Alert, 90dB Water Detector for Basements, Bathrooms, Laundry Rooms, Kitchens, Garages and All Office Areas (Shipped Without Battery, 2 Pack)

Why we love it

Unique Design: Portable, easy to install

High Quality: Completely waterproof

Easy To Use: Manual install, 9V battery

Main highlights

Key Features
Compact, highly sensitive 100dB alarm, waterproof, wireless, easy to use with a long battery life. Provides early leak detection to prevent damage.

Ideal Use Cases
Perfect for sink cabinets, basements, wine cellars, bathrooms, near water heaters, and washing machines to promptly alert on any detected leaks.

Customer Praise
Users highly value its loud alarm, easy installation, and effectiveness in early leak detection, significantly reducing potential water damage.

More info
9

PEKTACO

8.9

Very Good

PEKTACO Wireless Cat Water Fountain: Pet Water Fountain Battery Operated, 74oz/2L Automatic Cat Water Dispenser，Rechargeable Drinking Fountain for Cats Indoor with Motion Sensor, Black

60% Off

Why we love it

Wireless convenience for hassle-free placement.

Long-lasting battery supports up to 30 days.

Quiet operation with motion sensor feature.

Main highlights

Wireless Convenience
Provides hassle-free placement and prevents pets from biting wires.

Ideal for Cordless Use
Perfect for homes with limited outlet availability or traveling.

Quiet and Easy to Clean
Praised for its silent operation and easy maintenance.

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10

FOFNON

8.7

Very Good

Battery Operated Cat Water Fountain Wireless: Stainless Steel Pet Bowl Dispenser - Automatic Cats Drinking Fountains Cordless - Rechargeable Dog Waterer Fountain Indoor with Motion Sensor - 108oz

33% Off

Why we love it

Wireless and portable design.

Long battery life.

Ultra-quiet operation.

Main highlights

Wireless Cat Water Fountain
The wireless design allows flexible placement anywhere in your home.

Ideal for Travel and Home
Perfect for homes and travel, using AC or battery power.

Quiet and Motion-Activated
Praised for its quiet operation and energy-saving motion sensor.

More info

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Our top pick

1
34% Off

YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant
The YoLink Smart Home Starter Kit is an excellent choice for homeowners seeking a reliable water leak detection system. With its easy setup, the kit includes a hub and four water leak sensors that can be placed in various locations prone to leaks, such as basements, bathrooms, and laundry rooms. The system boasts a long-range coverage up to 1/4 mile thanks to LoRa technology, ensuring connectivity even in challenging areas. It integrates seamlessly with over 300 smart home devices and services like Alexa and IFTTT, enhancing your smart home ecosystem. Users appreciate the timely notifications via email and app, although some have noted occasional WiFi connectivity issues, which can be mitigated by using an Ethernet connection. The product is supported by responsive customer service, making it a dependable choice for safeguarding your home against water damage.

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