Top 10 Water Sensor

Discover our curated selection of high-quality products.

Last update: 12-07-2026

Best Sensor Equipment overall →
1
X-Sense Standalone Water Leak Sensor Alarm Water Leak Detector, Mini Flood Sensor with 110 dB Audio Alarm Battery-Powered, for Kitchens, Basements, Sinks, Tanks, Pools, WS01
X-Sense

X-Sense Standalone Water Leak Sensor Alarm Water Leak Detector, Mini Flood Sensor with 110 dB Audio Alarm Battery-Powered, for Kitchens, Basements, Sinks, Tanks, Pools, WS01

  • ⚠Attention: As the WS01 operates independently and does not feature Wi-Fi connectivity, it is not compatible with the SWS54 kit (cannot be linked to the SBS50 base station)
  • Real-Time Monitoring of Water Leaks and Floods: 4 bottom sensor probes and 2 top sensor probes to detect water leaks and floods, providing an early warning of water damage; suitable for kitchens, bathrooms, basements, and more
  • Loud 110 dB Sound: When triggered, emits a 110 dB alarm that is loud enough to be heard from a distance and which can be silenced with a simple push of the silence button
  • 5-year Long Lifespan: Offers a 5-year total lifespan and runs on 2 replaceable AAA batteries (included) that last 3 years; a low battery alert emits an audible beep and flashing red LED to remind you to replace the batteries
  • Wire-Free & Sensitive: Mini, sleek and simple to install in small, hard-to-reach areas, such as under the dishwasher or near water pipes; designed with sensitive probes that precisely and timely detect a minimum water level of 0.015 in (0.4 mm)
  • P66 Waterproof: An IP66 waterproof rating allows for extended use in humid areas; durable structure and rust-proof exterior coating for long-term use
9.3/10
Available at Amazon
2
SEBSON Water Alarm Mini GS153, 10 year long term battery, water leak detector 60x60x24.2mm, water sensor with lithium battery
SEBSON

SEBSON Water Alarm Mini GS153, 10 year long term battery, water leak detector 60x60x24.2mm, water sensor with lithium battery

  • Water detector GS153 with permanently installed 10 year lithium long-term battery.
  • For early detection of water damage. If the water sensor comes into contact with water, an 85dB loud warning signal sounds.
  • This water detector is suitable for the floor in the cellar, kitchen, bathroom, garage, boiler rooms and many more.
  • When the battery is almost exhausted, a warning signal sounds to alert you.
  • This small mini water alarm has the dimensions 60 x 60 x 24.2mm.
9.3/10
Editor's Pick
Available at Amazon
3
X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Kitchens, Basements, Bathrooms, 3 Water Detectors & 1 Base Station, SWS54
X-Sense

X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Kitchens, Basements, Bathrooms, 3 Water Detectors & 1 Base Station, SWS54

  • Real-Time Notifications: When a water leak is detected, a push alert will be sent to your phone, so you’ll be alerted quickly even while you are not at home; you can share the device with your family members so they can also check the device status anytime, anywhere
  • High Sensitivity: This water leak detector is equipped with 2 top sensor probes and 4 bottom sensor probes to detect water leaks and floods; detects a minimum water level of 0.015 in (0.4 mm), providing an early warning of water damage with the LED flashing red
  • Know from Anywhere: Once triggered, the water leak sensor and base station will sound simultaneously at a volume of up to 110 dB – loud enough for everybody to hear; simply mute the alarm via the app or push the silence button on the base station or water leak sensor
  • Unwired and Sleek Design: No wiring or setup required. Only measuring 29 mm in diameter, this water sensor alarm is small and compact enough to fit anywhere and nicely blends into any home decoration; has a 5-year lifespan with 3-year replaceable batteries (included)
  • IP66 Waterproof: An IP66 waterproof rating allows for extended use in humid areas such as near common household water sources like a dishwasher, hot water heater, or washing machine; its durable structure and rust-proof exterior coating permit long-term use
  • Customize Your Needs: Real-time app alerts, device test function, low battery warning, and sharing function enabled; the "Remind Me Later" feature allows you to temporarily silence the system and the timer setting has options for 10 minutes/30 minutes/2 hours/6 hours/12 hours
9.3/10
Available at Amazon
4
Yale AC-WS Sync Water Leak Sensor - Sync Alarm Accessory - 200m
Yale Security

Yale AC-WS Sync Water Leak Sensor - Sync Alarm Accessory - 200m

  • SYNC ALARM ACCESSORY: This Water Leak Sensor is easy to pair with your Yale Sync Smart Home Alarm through the Yale Alarm App.
  • SYNC WATER LEAK SENSOR: Will trigger your alarm and enable the Sync Smart Home Alarm to notify you immediately.
  • DISCRETE MOUNTING: Supports multiple mounting options, so you can mount on a wall or in another discrete location.
  • EASY TO SET UP & INSTALL: Link to your Yale Sync Smart Home Alarm straight out of the box. Completely wire-free, with no need for cables running through your home. You can attach to any surface, either via a screw or sticky-back for greater convenience.
  • EXPANDABLE SYSTEM: Extend & customise your Yale Sync Alarm, by adding up to 40 accessories.
9.2/10
Available at Amazon
5
Tapo T300 Smart Water Leak Detector, Water Leak Sensor, Drip Leak Alert, Real-Time Notifications, 90 dB Alarm, IP67 Waterproof, Battery Included, Flexible Installation, Visible Alarm with Tapo Lights
Tapo

Tapo T300 Smart Water Leak Detector, Water Leak Sensor, Drip Leak Alert, Real-Time Notifications, 90 dB Alarm, IP67 Waterproof, Battery Included, Flexible Installation, Visible Alarm with Tapo Lights

  • Drip & Leak Alert - Responds to drips and leaks with 6 detection probes on both top and bottom.
  • Up to 90dB Alarm - Get alerted with its 90 dB siren and mute the alarm with one-touch.
  • IP67 Waterproof Rating - IP67 waterproofing protects from wet and dusty environments.
  • Instant App Notification - Receive instant alerts via the Tapo app when a leak occurs from anywhere.
  • Flexible Placement - Wireless, designed to place in anywhere leaks or flooding may occur, like under the sinks, near washing machine, bathtub and more.
  • Visible Alarm with Tapo Lights - Get a visual alert from your smart bulb before disaster strikes.
  • Hub Required (Sold separately)- Triggers the Hub alarm when leakage is detected. Manage up to 64 sensors with one hub.
  • Hub Required: The Tapo Hub is required to support all smart features: Tapo H100 or Tapo H200 (sold separately)
  • This device operates exclusively within the specified Sub-1G band; Please note that different regions support different frequency bands; Ensure that the devices or hubs you intend to use are compatible with the same Sub-1G band
9.0/10
Available at Amazon
6
SwitchBot WiFi Water Sensor No Hub Ruiqred, Smart Water Leak Detector 100dB Adjustable Alerts & App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement (Support 2.4G Only)
SwitchBot

SwitchBot WiFi Water Sensor No Hub Ruiqred, Smart Water Leak Detector 100dB Adjustable Alerts & App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement (Support 2.4G Only)

  • Real-time Notifications (No Hub Needed): After connecting to Wi-Fi, you will be able to receive real-time email and app notifications remotely when dripping, leaking, or flooding is detected, without the need to purchase an additional hub. Share devices with family, and they can also check home status at any time. (2.4Ghz Wi-fi & BLE)
  • High Sensitivity Drip Alarms: This device is equipped with four sensor probes at the top and bottom, which can detect a low water level of just 0.5mm. If water pipes drip, and your floor is submerged, or gets wet, it will sound an alarm. Water Leak Detector is compact and convenient in size, suitable for placement in laundry rooms, water heaters, dishwashers, sinks, and other places.
  • Includes Loud Alarm Sounds: To help you stay alert, we've included 100dB high pitched alarms, which means even if there is a leak in basements or places a little further away, you'll know in a timely manner. Once discovered, you can manually set it back to mute without worrying about noise issues.
  • IP67 Waterproof, Up to 24 Months Battery Life: Water Leak Detector is designed with a fully sealed waterproof shell and can easily handle high humidity working environments. It comes with 2 x AAA batteries and has a battery lifespan of up to 24 months. When battery is low, our app will also send notifications to remind you to replace them in a timely manner.
  • Part of SwitchBot Ecosystem, Voice Command Compatible: Use with SwitchBot Plug Mini or Indoor Cam, and remotely turn off electrical equipment or check the condition of your house in case of leakage. It can also support third-party services such as Alexa/Google/Siri/IFTTT/SmartThings.
8.9/10
Bestseller
Available at Amazon
7
X-Sense Wi-Fi Water Sensor with SBS50 Base Station, Smart Water Leak Detector, App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, SWS0A41
X-Sense

X-Sense Wi-Fi Water Sensor with SBS50 Base Station, Smart Water Leak Detector, App Alerts, IP67 Waterproof, Wireless Detector for Kitchen, Bathroom, Basement, SWS0A41

  • Never Miss a Leak: When a water leak is detected, a red light will flash on the water leak sensor and the base station will sound an alarm up to 100 dB; you’ll also get an app alert on your phone, so you can learn about leaks even if you’re away
  • Feature-Rich App: Adjust the base station alarm volume, mute an alarm, and view your alarm history via the app; tap “Remind Me Later” to temporarily mute the alerts for 10 minutes, 30 minutes, 2 hours, 6 hours or 12 hours; test the device, get low battery alerts, and share the sensor all from the app
  • Top and Bottom Sensors: Featuring 2 ultra-sensitive water probes on the top and 4 on the bottom, this water leak detector can sense water just 0.4 mm deep as well as drips from above, ensuring you're promptly alerted to any unexpected water without having to physically be there and check for yourself
  • Ultra-Slim and Easy to Place: This water sensor alarm fits into tight and awkward spaces thanks to its compact design; the device is only 0.7 in (17 mm) thick and 3 in (77 mm) in diameter
  • Long Connection Range: Feel confident to put this sensor in an outbuilding or far away corner—its wireless connection range of up to 1,700 ft (500 m) in open areas means you’ll receive app alerts no matter where it’s placed
  • Works in Humid Areas: With an IP67 waterproof rating, this water detector alarm works reliably in humid spaces such as near dishwashers or water heaters; once it’s in position, there’s no maintenance as its batteries last up to 3 years and simply replace them to extend its lifespan to 5 years
  • Detects Leaks Throughout Your Home: This Wi-Fi water sensor detects leaks in places like windows, bathrooms, kitchens, garages, restrooms, sinks, water pipes, laundry rooms, basements, and wine cellars
  • Base Station Alarm: When water is detected, an LED on this water leak detector will flash red, but only the base station will emit an alarm; if you would like a model where both the device and base station sound, consider the X-Sense SWS54 Kit with Wi-Fi water leak detector
8.7/10
Available at Amazon
8
Topvico Water Leak Sensor Detector Flood Alarm for Basement 120dB Work Alone Battery Operated 3 Packs
Topvico

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

  • 120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off (easy to hear the alarm coming from the basement), low cost and effective water leak alarm to prevent water damage at your home and business
  • High sensitive 24k plating detect board, repeated use after dry the board (if you no need high sensitivity, please try "B0BYHS79W5" with similar cost)
  • Upgrade to our double-sided paster / sticker for easy installation anywhere. One part is for the host and the other part is for the water detection board. There are two fixing styles optional for the detect board, as shown in the description photo. Choose between two fixing styles based on your needs
  • 37.8 inches cable, easy extend more than 150 ft. of wire by user (normal electric wire available, not include), detect water anywhere corner (good for detecting when the sump pump has reached a high water level), suit for basement, heater leak, underground, washing machine, kitchen, sump pump overflow, etc
  • Supply by 9V battery (not include, suggest use brand Alkaline battery), battery life will be about 12 months for normal use (low quality battery about 6 months, very high frequency alarm or testing, battery life will be shorter)
8.7/10
Available at Amazon
9
Aqara Water Leak Sensor, REQUIRES AQARA HUB, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System and Smart Home Automation, Water Sensor Alarm for Kitchen Bathroom Basement

Aqara Water Leak Sensor, REQUIRES AQARA HUB, Wireless Water Leak Detector, Wireless Mini Flood Detector for Alarm System and Smart Home Automation, Water Sensor Alarm for Kitchen Bathroom Basement

  • NOTES: Aqara Hub is required and sold separately. Requires a secured 2. 4 gigahertz WiFi network connection. One Aqara Hub can connect up to 32 Aqara devices.
  • FLOOD DETECTION: Whenever the Aqara Water Leak Sensor detects water, it can send an alert to your phone and activate the local alarm on the Aqara Hub to prevent leaks and flooding.
  • HOME AUTOMATION: Controls and triggers Aqara connected devices when excess water is detected.
  • WIRELESS & SENSITIVE: No wiring or screws are required. The ultra mini design allows you to put it anywhere that dripping and leaking could happen. Our water leak sensor is designed with sensitive leak probes which the threshold of the water level is 0.5mm.
  • INDUSTRY-LEADING QUALITY: Durable IP67 water-proof housing with rust-proof exterior coating.
8.5/10
Available at Amazon
10
CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc.
CQRobot

CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc.

  • Contact Water/Liquid Level Sensor, This is a photoelectric water liquid level sensor that is operates using optical principles. Open collector output mode, suitable for connecting various circuits and product applications.
  • The sensor has no mechanical parts, requires no additional adjustment, and has high sensitivity, low power consumption, corrosion resistance, high pressure resistance, high temperature resistance and chemical stability.
  • This sensor probe is small in size and has a structure that can be placed up, down, laterally, and diagonally in multiple orientations to detect solution spillage, dryness and horizontal level. Can be used as a reminder and alarm function.
  • The sensor has a DIP switch. The DIP switch controls the output voltage (high level) of the signal terminal (green line). When the DIP switch is dialed to 5V, the high level is 5V. When the DIP switch is dialed At 3V, the high level is 3.3V.
  • Compatible with Arduino motherboard and Raspberry Pi motherboard. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc.
8.5/10
Available at Amazon

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