Best Outdoor Water Detectors in 2026

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

Only leak-detecting product that turns off the appliance and sounds an alarm when water is detected—Prevents major flooding and water damage

New and improved sensor is capable of detecting extremely small amounts of water—works great with dehumidifiers!

Keeps appliance turned off until WaterWatcher is manually reset—Stops the problem in its tracks!

Real-time Alerts: Connect the gateway to WiFi, and it 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. Note: only support 2.4G WiFi, not support 5G WiFi.

Loud Alarm with Mute: If WiFi is not temporarily available, our 100dB 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.

MONITOR WATER LEVELS from your home with our septic alarm by Sump Alarm. Our flood sensor lets you know when water levels approach a dangerous stage.

IP67-rated with gasketed enclosure and weatherproof components, Sump Alarm Water Alarm is ideal for lift stations, grinder pumps and pool sumps.

POLYPROPYLENE FLOAT SWITCH on our water sensor alarm detects changes within 6” for fast troubleshooting. Minimize property damage with quick notification from our water level sensor.

MONITOR WATER LEVELS from your home with our septic alarm by Sump Alarm. Our flood sensor lets you know when water levels approach a dangerous stage.

IP67-rated with gasketed enclosure and weatherproof components, Sump Alarm Water Alarm is ideal for lift stations, grinder pumps and pool sumps.

POLYPROPYLENE FLOAT SWITCH on our water sensor alarm detects changes within 6” for fast troubleshooting. Minimize property damage with quick notification from our water level sensor.

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)

HIGH SENSITIVE SENSOR CONTACTS - Are you still worrying the water leak damage in your home? Protect your home from potential water damage by installing a leak alarm is best way. Our electronic water leak detector with high sensitive sensor contacts responses quickly and accurately, it is fully automatic and does not require you to install any wiring, two metal sensor contacts of the water sensor to give you a loud alarming when water leak is detected, giving you a reliable result

Loud Alarming - 95dB alarm sound can be heard throughout the WHOLE HOUSE once the water leak or water flow through the sensor contacts. When touching water leak or flooding, a loud alarm will sound from the water sensor alarms. At this time,please take action to deal with it as soon as possible and remove the alarm unit from the leaking environment.This water leak sensor would help you away from water leak damage,choose it go home

Easy to Install, Smart, Affordable, and Compact - Povlen Water Leak Detector is a small device with 3 packs that you place near your hot water heater, toilet, sink, or anywhere else you might get a leak. In the event something does start leaking, the sensor will sound an alarm wherever it’s needed. This water alarms for basements powered by 1X 9V 6F 22 battery (battery is included), just twist off the sensor cover and install the battery manually, then this leak sensor can begin to work normally

App Monitor and instant Alerts: AGSHOME Hub requires a 2.4 GHz Wi-Fi connection, And it will push the real-time notifications in your smartphone when water leakage happens even you are away from your home.Water sensors and hub are not paired right out of the box.

120dB alarm : The Water Leak detectors provides a loud Audible alert to you when In flood situations,and the Leak Alert floats and continues to sound an alarm until the battery is depleted.To minimize property damage, respond to the alarm as quickly as possible. Wipe it out quickly.

Easy to install - no screws, no tape, no wires.The water sensors is Perfect for Any Room, Apartment, Home, Office. Place a water Leak sensor in any location where there is a potential for water damage and name each water detector.

Smart Water Leak Detector: Monitor critical locations at risk of flooding, and be informed immediately of the presence of water, preventing costly repairs; Smart Water Level Monitoring: The sensor may be configured for water level monitoring – be informed when water is no longer present or when water levels recede. Monitor water supplies for pet care, house plants, gardening and more

World's Longest Wireless 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.

Early-Warning Notifications: Receive real-time early-warning notifications and protect your home and property from water damage. Notifications are in the form of smartphone banner alerts, limited SMS/text messages and emails, each optional and configured per your needs. Additionally, you may configure your system to activate a siren alarm and/or lights in your home.

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.

【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】

✽【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.

"SMART WATER STARTER KIT" YoLink Hub Leak Detection Starter Kit, including one hub and one Water Leak Sensor 1. Hub supports ethernet and/or WiFi (2.4GHz, only). Connect to your router's ethernet port for our "Plug, Plug & Play" easiest set-up - be up and running in just minutes!

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.

It's water probe(two lead) only, without any circuit. Water Liquid Leak Level Probe.

Material: ABS; Detecting Leads Material: stainless steel with Electroplating

It's great to use with water detector to prevent water leak or flood. Use this to extend detection points.

【Function】 Underground water leak detector can detect the noise from the source of the pipeline leak to determine the location of the leak. Wear headphones to detect leaks. Including adjustable 4 gear modes for different site conditions

【Easy to Use】 The external earphone sensor has good listening effect and accurate judgment, which is suitable for outdoor use and can shield external noise, obtain good listening effect to make accurate judgment

【Design】 The higher the value, the closer to the leakage point, and different leakage points can be captured. Counterclockwise rotation reduces the display sensitivity, and clockwise rotation increases the display sensitivity

[Leak Detection Design] iSpring water leak detection system is designed and to be installed on whole house water pipe to detect and set alarm for possible leak

[Automatic Working] The water leak detection will shut off water supply automatically to prevent flooding when it detects a possible leak. It includes a 3/4" NPT automatic shut-off ball valve

[8 Water Sensors] The controller unit is able to connect up to 8 water detection sensors and 2 sensors are included

Easy Setup: No need for apps or hubs, simply connect the device to your WiFi network(Note: only 2.4GHz WiFi supported). No monthly fees or subscription costs.

Multiple Notifications: Receive alerts via email and text message for high or low water levels, water level returning to normal, low battery, and device offline(WiFi connection lost). Register up to 2 phones and 4 email addresses per device.

Durable Construction: The stainless steel float sensor offers superior reliability and durability compared to plastic alternatives, and it features a 6.5-foot long cable for added convenience.

Smart Water Leak Detector: Monitor critical locations at risk of flooding, and be informed immediately of the presence of water, preventing costly repairs; Smart Water Level Monitoring: The sensor may be configured for water level monitoring – be informed when water is no longer present or when water levels recede. Monitor water supplies for pet care, house plants, gardening and more

World's Longest Wireless 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.

Early-Warning Notifications: Receive real-time early-warning notifications and protect your home and property from water damage. Notifications are in the form of smartphone banner alerts, limited SMS/text messages and emails, each optional and configured per your needs. Additionally, you may configure your system to activate a siren alarm and/or lights in your home.

Case Material: ABS; Detecting Leads Material: Stainless steel

Controller and switch not included, should buy separate

Suit for: Water tower, return pipe, water heater, computer facilities, machine platform,electrical control room, central air conditioning studio, factory, warehouse, file reference room,office, basement, laboratory, fish bowl, water tank, pool, water dispenser, air conditioner

✿❁➤【DETECTION FUNCTION】◆◆◆The ultrasonic level gauge transmits wirelessly within 100 meters of an open area. It can detect the height of the page in the tank, the temperature in the relevant area, the over-limit alarm in the tank, and record the minimum/maximum value of the tank body level.

✿❁➤【MULTIFUNCTIONAL】◆◆◆This meter monitors tank liquid depth level, and displays on a 10-element LCD bar graph.It can keep min/max records of tank liquid level.Supports tank liquid level high/low alarm and tank liquid empty alert.Displays indoor temperature (℉ or ℃) and tank temperature (℉ or ℃) at the same time.

✿❁➤【SPECIFICATION】◆◆◆Indoor Temperature Range: 0~60℃;Outdoor Temperature Range: -40~60℃;Temperature Accuracy: ±1oC;Water Level Measure Rang: 0~15m;Resolution: 0.01m;Accurate: +/-0.03M;Transmission Frequency: 433MHZ;Transmission Range: 100 meters(300 feet)in open area.

[Korea's Most Famous Leak Detector Company]Daeseong Engineering is the most famous leak detector company in Korea and has 30 years history. 30 years of know-how, the leak detector continues to work to produce the best leak sound.

[Own leak detection teams]Daeseong Engineering has its own leak detection teams, and all leak detection teams participate in the development of the product and launch the product after numerous tests. In other words, it is a product that has already been verified in the field.

[Indoor and Outdoor detection]The DS-950Plus is capable of indoor and outdoor detection. A palm-sensor for indoor detection of the building and a Geo-sensor for outdoor detection are provided separately. Outdoor detection cases vary depending on the amount of water leakage, but we have experience in detecting from a depth of 3m.

Water Leakage Alarm: you will receive 6 water sensors, they can float on the water, accurately detect light moisture and give a loud alarm, made of quality ABS materials and electronic parts with a waterproof design, there are enough quantities to meet your use needs and replacements

Proper Size: the diameter of water leak sensor is about 3.15 inches and the height is about 1.18 inches, you could put them in some areas as you want, such as basement, bathroom, under sink or beside water heater

Loud Voices: each water sensor alarm has an alarm audio with a volume of 90dB, once water is detected, the alarm will sound to remind you of water leakage and avoid flood attack; Even if there is water leakage in the basement, garage or wine cellar, the sound of the whole house is loud enough

【External Network Sensor】For outdoor use, external network sensor can external noise, obtain better listening effect, and make accurate judgments.<br/>

【With Stable Performance】Product size is approx. 16.7x11.7x8.8cm / 6.6x4.6x3.5in, the frequency is divided into 1to 4 grades 200HZ to 3000Hz continuously , stable to work.<br/>

【Practical to Use】Press the button, and the sound from moving sensor is disappeared, avoiding strong sound impact and protecting hearing.<br/>

😊PQWT-L6000 is the newly updated and multi-functional water leak detector, it is applied to different detecting leakage of outdoor water pipe, fire pipe, heating system and underground heating floor pipe. By collecting and analyzing leakage signal, it solves the problem of pressure pipe water leak

🎁Working principle: Pipeline Water Leak Detector collects leaking sound signal through its sensor, collected signal will be processed by host machine and displayed on the host machine screen in the form of visual spectrum and signal bars. At the same time, the sound will also be output to its earphone through the host machine. Water leakage point can be found out easily through the combination of "listening to the abnormal sound" and "observing the abnormal signal bars”

👍The major components of the instrument include: Host Machine, Noise Reduction headphone, Medium Sensor(for outdoor normal environment), Large Sensor(for outdoor noisy environment)，Telescopic Pole (for connecting sensors), Sound pole (for inserting soft soil, lawn)

Remote Monitoring & Automation: Compatible with Apple HomeKit (with HomeKit bridge, home WiFi stay online), and SmartThings, easy to set up, monitor water leaks remotely. Set triggers to control other Meross devices in the Meross app. e.g. once a leak is detected, the sensor will trigger Meross plug to turn off fish tank water pump.

IP67 Waterproof: Fully sealed IP67 waterproof and dustproof design, works well in high humidity environment, no rust, no short circuit, high sensitivity, no false alarm. Made of advanced nickel-plated carbon steel material, the water level detector alerts and stays in place when the water level rises beyond.

Real-time Alert & Precise Detection: Equipped with sensitive probes, the water level threshold is Only 0.5mm. Water leakage activates a real-time local audible and visual alarm, and phone app notifications.

THAT WAS EASY! Installs quickly and easily, thanks to Scan & Play QR-code scanner feature in the app, easy wall-mounting, and no requirement to plug the sensor into an AC outlet.

NO WIFI, NO INTERNET, NO POWER? NO PROBLEM! Our patented Control-D2D device-to-device pairing, over our LoRa-based wireless network, allows for devices to be paired to each other, in such a way they will continue to operate, even if WiFi is flaky, the internet goes down, or the AC power goes out!

A YoLink hub is REQUIRED! This device will not operate without a Hub, not included. Please search for B09FSS95G9 for a SpeakerHub (our audio, talking hub) or B07TQLKQLJ for the original Hub

【Working Principle】 PQWT-L Multi-Sensor Water Pipeline Leak detector collects leaking sound signal through its sensor, collected signal will be processed by host machine and displayed on the host machine screen in the form of visual spectrum and signal bars. At the same time, the sound will also be output to its earphone through the host machine. Water leakage point can be found out easily through the combination of "listening to the abnormal sound" and "observing the abnormal signal bars”.

【Applicable environment】It is suitable for water leakage detection of outdoor water pipe, fire pipe, heating system, indoor water pipe, and underground heating floor pipe.

【Operation Mode】It has general and locating detection mode, which can distinguish suspect leak point and environment noise.

✨ PQWT-L series is the newly updated and multi-functional water leak detector, it is applied to different detecting leakage of outdoor water pipe, fire pipe, heating system, indoor ground water pipe, and underground heating floor pipe. By collecting and analyzing leakage signal, it solves the problem of pressure pipe water leak.

🎁Working principle: Pipeline Water Leak Detector collects leaking sound signal through its sensor, collected signal will be processed by host machine and displayed on the host machine screen in the form of visual spectrum and signal bars. At the same time, the sound will also be output to its earphone through the host machine. Water leakage point can be found out easily through the combination of "listening to the abnormal sound" and "observing the abnormal signal bars”.

🎈General Detection; Locating Mode;High Precision Detector,effectively solving the problem of water leakage in the household pipeline