Best Waterproof Water Alarms in 2026

Be notified of possible home flooding with this SimpliSafe water sensor

Alerts you whenever it comes into contact with fluid with an audible alert

Place in areas where flooding or water damage may occur

Easy to install. Scan, Plug and Play. Full installation and setup in less than 10 minutes

Protected and informed, with Realtime phone app notifications, emails, SMS messages and automations (turn on optional sirens, smart plugs..)

FAIL/SAFE: Patented technology! Pair your leak sensors to battery powered valve controllers and/or sirens. No internet, no WiFi, power outage no worries!

Detects as little as 1/32 in. of water to offer an effective early warning system

Solid-state circuitry is extremely sensitive and reliable

Loud 110 dB alarm can be heard throughout the house

Dripping and Leaking Alarm: Besides 2 groups of backwater detector sensor probes, each detector also has 1 group of front probes for pipe dripping.(Note: Only paired with the gateway of the water detector, cannot paired with the gateway of the hygrometer.)

Wireless and Easy to Use: No wire or setup required, the mini size allows you to put it on any place where the water leak may be happening. With kit "B07QP153GT", you are able to monitor leaks on your phone even you're not at home."B07QP153GT" not Included in Package.

Adjustable Alarm Audio: Each water leak detector features an 0-100 dB adjustable alarm audio. Loud enough to be heard even if leak happens in basement, press the button to mute the sound when you find the leaking place.

📶 Why Worry About WiFi? YoLink devices communicate by LoRa, an industrial-grade protocol that provides up to ¼ mile open air range. Devices do NOT connect to your network or even to the internet; they communicate with the Hub. Strong signal level, obstruction penetration, no (WiFi) holes in your internet security, and fully-encrypted communications provide more than most ask for from their smart home system!

⏱ Set it & Forget it! Installs in seconds! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, in or near sump pumps, and by any other location subject to water leaks and flooding.

📡 Extreme Long Range: Powered by LoRa technology, the long-range yet low-power system offers the industry’s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property. Low-power operation squeezes the most out of the batteries, which can last from 2 to 10 years!

📶 Why Worry About WiFi? YoLink devices communicate by LoRa, an industrial-grade protocol that provides up to ¼ mile open air range. Devices do NOT connect to your network or even to the internet; they communicate with the Hub. Strong signal level, obstruction penetration, no (WiFi) holes in your internet security, and fully-encrypted communications provide more than most ask for from their smart home system!

⏱ Set it & Forget it! Installs in seconds! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, in or near sump pumps, and by any other location subject to water leaks and flooding.

📡 Extreme Long Range: Powered by LoRa technology, the long-range yet low-power system offers the industry’s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property. Low-power operation squeezes the most out of the batteries, which can last from 2 to 10 years!

PERSONAL PROTECTION YOU CAN TRUST: SABRE is the #1 pepper spray brand trusted by police & consumers & a leader in the personal safety category

HELPS TO PREVENT WATER DAMAGE: An all direction water sensor detects water, providing an early warning to help prevent water damage to your home and personal items

ATTENTION-GRABBING ALARM: An ear-piercing 110dB alarm is audible up to 1,500-feet (457-meters); loud enough to help alert you to the presence of water detected in basements, utility and laundry rooms where flooding and appliance leaks are more likely

✽【NOTES】An Aqara Hub is required and sold separately. Requires a secured 2. 4 gigahertz WiFi network connection. The Aqara M2 or M1S Hub can connect up to 128 devices(*use of a repeater such as the Aqara Smart Plug or Aqara Smart Wall Switch(With Neutral) is required).

【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.

120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off, 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

Double side sticker (included) for easy install anywhere

LEAK AND FLOOD PROTECTION:Place the Aeotec SmartThings Water Leak Sensor under sinks, refrigerators, washing machines, and more to detect excess water or moisture and receive immediate alerts on your phone by connecting to the Aeotec Smart Home Hub and using the SmartThings app

TEMPERATURE MONITORING: The sensor also monitors temperature, requiring a 32- to 104-degree operating temperature; You can choose from light-up or siren alerts when abnormal moisture or temperatures are detected in sensitive areas

SHUT DOWN SYSTEMS: You can program your other connected smart devices to shut off water flow or shut down electronics automatically to prevent electrocution and damage to your home from water leaks and irregular temperatures

Real-time Alerts: Connect the gateway to WiFi, and the water leak detector will instantly send emails, App notifications & alerts to your phone when water leakage occurs even you're not at home. Water sensors and gateway are paired right out of the box.

Loud Alarm with Mute: If WiFi is not temporarily available, our 100dB water alarm is loud enough to be heard. Press the Mute button to silence the alarm when you find the leak.

Drip and Leak Alerts: Water sensor comes with 2 groups of back water detector probes & 1 group of front probes for pipe dripping detection. Use the App to name each sensor with its location.

Ready to Use: Download the app, connect the devices to the app via the 2.4 GHz Wi-Fi network (incompatible with 5 GHz) and then start to protect your home

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

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

Detects as little as 1/32 inch of water to offer an effective early warning system

2 metal sensors at the bottom are extremely sensitive and reliable

Loud 110 dB alarm can be heard throughout the house

💎UNIQUE DESIGN - Size: diameter 87mm * height 38mm, only 100grams and portable, easy to be installed and used, suitable for the sink cabinet, sump pump, washing machine, bathrooms, basements, kitchen and water heater, anywhere you think the need for the waterproof alarm. It was updated from 90dB to 100dB in Sep.2022. If you have any questions, please talk to us by amazon, maybe you will get any extra helps from us.

💎HIGH QUALITY - The liquid leak alarm is made of ABS plastic and electronic parts, completely waterproof design, it's okay to float on water. The high-sensitivity component built-in the leak detector sensor that can accurately detect the light moisture and issue loud alert.

💎EASY TO USE - Wireless water leak detector alarm, just powered by one 6F22 9V battery (battery is not included), just twist off the sensor cover and install the battery manually, the sensor consumes very little power and can give you home safety protection for up to one year.

Detects as little as 1/32 inch of water to offer an effective early warning system

3 metal sensors at the bottom are extremely sensitive and reliable

Loud 110 dB alarm can be heard throughout the house

For a Safer Home: The water leak detector only supports 2.4GHz WiFi. The package comes with 8 AAA batteries(included) and has up to 5+ years of battery life. The water sensor has the technologies and features you need to give you the confidence that the people, places, and things that matter are always protected.

Low-cost and Effective: The sensitive water detector alarm will emit a 60 dB alarm sound when encountering water leakage or water flow, you can hear it even if you‘re in the basement or garden. The water sensor is designed to warn you to turn off the water in time so that can be fixed before they become much costlier problems.

All-day Protection: Smart technology helps reduce the risk of water damage by providing 24/7 monitoring to help detect leaks. It will push APP and free email notifications to you when a water leak alarm occurs such as a flooding basement or malfunctioning appliance even if you're away from home.

User Manual available for download under Product Information Details

Compliant with SAE J994 Type C, CE, E11 Certification

Heavy duty construction.

Four (4) one-time use spot detectors; built-in non-replaceable batteried included

Economical way to defend against water leaks in mulitple locations throughout the home.

Ideal for use in areas not usually observed: water heaters behind washing machines or dishwashers, under sinks, etc.

WA9-04 AC/DC, (9-Volt) High or Low Water Alarm

10 ft Float cord

Reversible by user to detect High or Low water condition

LOUD 100DB WATER ALARMS FOR HOME- Each water alarm leak detector features ultra-loud 100dB alarm audio which is loud enough to be heard throughout the house even if leak happens in the basement, garages, or wine cellar. The water detector sensor will sound once the water is detected, alerting you of water leakage to avoid flood strikes.

PLACE ANYWHERE LEAKS HAPPEN - Geevon water leak detectors for home residential with 3.15in diameter and 1.18in height which is easily placed anywhere you want, such as basements, bathrooms, underneath sinks or by water heaters to detect the leaks as they happen. Don’t let the water leakage damage your home property and cost your money!

HIGHLY SENSITIVE WATER SENSOR - Basement water sensor alarm with 3 metal prongs embedded on the bottom is made from high quality ABS materials & electronic parts and waterproof design, it's okay to float on water to detect leaks to prevent the water damage.

Dripping and Leaking Alarm: The wireless water detector alerts you immediately just by touching water, so all you need to do is place the detector in the area of the leak. When water leaks, the wireless water detector emits a loud 90 decibel alarm to alert you to prevent leaks and water ingress.

Wireless and easy to use: no need to program settings with wires, superb mini size design fits perfectly where water leakage may occur.

IP66 Waterproof: The completely sealed waterproof design allows for extended use in high moisture areas.

Email and text message notification when water level change is detected. All services are free.

Battery powered wireless water level detector using your WiFi, no app to install and no hub is required. Perfect as a standalone high or low water alarm.

Waterproof float sensor with a 3 ft wire connected to a rugged enclosure protecting smart electronics. This float sensor can be used to detect high or low water levels, the default setting detects high water levels. Flip the float ring and use this device to detect low water levels in aquariums, ponds, and storage tanks.

Avoid Costly Water Damage: Master Sensor Plug-in with a compact, waterproof Sensor Pod (DCH-S163) detects leaks; multi-alert system (voice, alarm, text) notifies you right away

Alerts include powerful LED strobe light, built-in 100dB alarm, mobile phone notifications, and voice alerts with Google speakers providing real-time notifications wherever you are

Easy Setup and Placement: Master Sensor Plug utilizes a 5-foot cord with an attachable 1.5-foot water-sensing cable. Wirelessly expand coverage in up to 16 susceptible areas like next to water heaters, washers, and under sinks with Sensor Pods (DCH-S163)

NOTE: SUPER LOUD--140 dB, if you use it indoors, you may feel too noisy.The volume can't be controlled.

IP67 WATERPROOF--Perfect ideal for outdoor use such as in ground pool gate,patios, fence, shed,entrances and exits, prevent robbery and door prying.

EASY TO INSTALL&USE--There are many installation methods, tape, tie, screw. Both numeric keyboard and remote control can be operated without using a bypass module.

PREVENT WATER DAMAGE: Receive alerts on your phone when water is detected by the sensor once you include it to your Z-Wave hub (required, sold separately). Check below for compatibility. Pair with the Zooz Titan Water Valve actuator (sold separately) for a smart flood prevention system.

EXTRA SMALL: Place it under your appliances to monitor for leaks discreetly. It's OK if the device is splashed with water but it can't be fully submerged so keep that in mind when choosing the installation location.

NEW 700 SERIES CHIP: You get more Z-Wave range and longer battery life with this sensor. Better signal means more reliable and quicker reports to help you act faster in case of a leak.

Real-time Alerts: Connect the gateway to the "AIRIA" App by 2.4GHz WiFi, and simplely add the water leak detectors to the App. Whenever there is a water leak or drip, the gateway and water leak detectors will automatically trigger an alarm, also the App notifications will be sent to your phone. Note: The gateway only supports 2.4G WiFi, not 5G WiFi. Not compatible with Alexa.

4-Level Adjustable Alarm: There are mute and 3 levels of volume can be adjusted for the gateway and detectors. Press and hold the TEST button on the detector for 3 seconds to choose the detector alarm volume. The loudest volume is 120dB, which is about as loud as standing next to a chainsaw sawing through a log.

Ultra-Sensitive Leak & Drip Alerts: There are 4 detection probes on the bottom of the detector and 2 parallel lines front probes which can immediately alarm when they detect water leak or drip in kitchen, bathroom, garage, bedrooms and basement.

PROTECT YOUR HOME: Detect leaks in an instant with this water sensor leak detector. Connect this smart water leak alarm to your home's 2.4 GHz Wi-Fi to receive instant notifications right to your phone or tablet.

CONTINUOUS MONITORING: Detect leaks when and where they happen and keep your entire home protected from leaks and floods 24/7. With this water detector alarm, you can save thousands of dollars in home repairs.

FITS ANYWHERE: Place the water sensor alarm under sinks, washing machines, hot water tanks, or anywhere in the basement. With a compact design, optional smaller extender cord and battery-operated power, you can place this water leak detector anywhere.

【EXCLUSIVE DESIGN AND TECHNICAL INVENTION】- The first 2-in-1 separated dual probe structure, which can meet the needs of almost all water leakage and water level detection scenarios. It can detect two scenes at the same time, the left and right probes can be quickly distinguished by different sounds, and the left and right alarms can also be quickly distinguished by APP alerts.

【RECEIVE ALERTS EVEN WHEN YOU ARE NOT AT HOME】- Our smart devices can be connected to cell phones and iPad via WiFi (2.4G ONLY). After successful connection, when our detector detects a water leak or alarm, as long as the cell phone network is normal, no matter where you are, you can receive a push alert from the app（FREE). SMS/phone call is a paid service, you choose whether to open it or not?

【100 DB LOUD ALARM SOUND】 - When there is no network, if the detector detects a dangerous situation, it will also send out a 100 dB sound to alert at the first time. If it is not handled, it will sound the alarm again every 10 minutes. In addition, the sound can adjustable: HIGH - MEDIUM- LOW - MUTE, Quickly double-click the button to adjust. 【NOTE: In MUTE mode, If the WiFi is normal, the APP will receive push notifications as usual】

Pre-paired Sensors & Easy Set Up - When the hub successfully connects to WiFi for the first time, the water leak sensor has been connected to the hub by default; only 1.8mm thickness, arbitrarily placed in any hidden corner(hub is not included)

IP66 Waterproof & 365 Days Life - Fully sealed waterproof housing, allowing you to use water immersion for a long time in high humidity areas. We adopted the stable and reliable solution so that the equipment can report well without missing reports. Connect multiple sensors, you can safely place the sensor in the kitchen, washing machine, etc.

APP & SMS & Email Notification - Receive the instant app notifications and alerts when a water leak occurs; we have added email and SMS notification services to double protect your home, avoid missing important real flooding events; this water detector is compatible with IFTTT.

Real-time Alerts:Connect the water leak sensor to the Tuya Smart App. Even if you are not at home, when there is a water leak or seepage, you will be notified (in the form of a smartphone banner alarm, SMS or email) to protect your home and property form water damage.Can work with Alexa, Google Home, IFTTT. Note：Doesn't support 5G WiFi.

Drip&Leak Alerts:Water leak detector alarm is designed with 4 rear water leakage detection probes and 2 front drip probes.There will have an alert when any of the three sets of probes were under the water.

125dB WiFi Gateway:Connection design has stronger and safer signal transmission. It can be used as a bridge between your WiFi and multiple water sensors.Can connect multiple sensors at the same time (up to 24).When the gateway connects to the APP, only 2.4G is required. After the connection is successful, it can be switched to 5G WiFi.