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Best Choice X-Sense 
X-Sense Wi-Fi Water Leak Detector Kit, Smart Water Sensor Alarm with App Alerts and Ultra-Slim Design, Water Alarm Leak Never Miss a Leak: When a water leak is detected, a red light will flash on the water leak detector and the base stationBest Value TP-Link 
Tapo TP-Link Water Leak Sensor, Home Security System, Real-Time & Accurate, Built-in 90dB Adjustable Siren, IP67 Waterpr Designed to Fit Everywhere – Place in any location with its elegant design.Geevon 
Geevon 4 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, Ki LOUD 100DB WATER LEAK DETECTORS FOR HOME- Each water sensor alarm leak detector features ultra-loud 100dB alarm audio whMETAK 
5 Pack Water Leak Detectors for Home, 100dB Water Sensor Alarm for Basement, WD60 Flood Leakage Detection Devices for Pi Leaking & Dripping: 2 water sensitive probes on the front for monitoring pipe/drain drip and 4 rear probes for detectionMengshen 
Mengshen WiFi Water Leak & Water Level Detector, 2-In-1 Tuya Smart Sensor Alarm Loud Volume APP Alert Monitoring with 6. 💧【Dual Sensor Water Alarm】2 in 1, including water leak probe and water level probe. It can not only detect water leaks,eMagTech 
eMagTech Water Leak Sensor Water Leak Sensor Detector 120dB Water Leak Alarm Detector Water Overflow Alarm Detector for Powerful Alarm: Boasting an ear-piercing 120dB alarm sound, the device ensures attention and action. The alarm persistsHepzest 
Hepzest Smart Life Leakage Sensor Water Leak Detector Water Linkage Alarm App Remote Monitoring Water Leak Detector 2. A water immersion sensor that detects water leakage in the environment in real time.Whenever and wherever you are, onRUIKORING 5 Pack Water Leak Alarm Detector, 120dB Loud Alert Water Sensor, IP66 Waterproof, Sensitive Leak and Drip Alert, Easy In **Universal Leak Detection** – This water leak detector is equipped with 2 top sensor probes and 4 bottom sensor probes,Panv Overflow Alarm, Long Cable Detect Water Leak Sensor for Home Kitchen Bathroom Water leakage detector, when the probe detects that the water exceeds the standard, it will immediately sound a 120dB alSpacnana High Efficiency Water Leak Alarm Detector 120dB, Multi Scenario Water Level Alarm for Kitchen Leaks, Solar Heaters [High Efficiency Water Level Alarm] : This alarm efficiently detects overflow and leakage, ensuring home safety and saviTapo TP-Link Tapo Smart Water Leak Detector, Requires Tapo Hub, Water Leak Sensor Wi-Fi with Rapid Dripping Detection, 90dB A 【1-Second Rapid Detection and Response & Dual-Side Sensing】Featuring six highly sensitive sensor probes, Tapo T300 triggLancoon Lancoon WiFi Water Level Detector Tuya Smart Sensor Alarm Dual Probe Loud Volume APP Alert Monitoring with 6.5 Feet Dete 💧【Water Level Probe Version】Designed for water level management of water tanks, cisterns, fish tanks and other containeLancoon Lancoon WiFi Water Leak Detector with App Alerts Adjustable 100dB Alarm Smart Home Device with 6.5 Feet Detection Line f 💧【Water Leakage Probe Version】Adopting sensing technology to monitor abnormal leakage in pipelines, equipment or enviroRUIKORING 5 Black Pack Water Leak Alarm Detector, 120dB Loud Alert Water Sensor, IP66 Waterproof, Sensitive Leak and Drip Alert, E 𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗮𝗹 𝗟𝗲𝗮𝗸 𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻: This water leak detector is equipped with 2 top sensor probes and 4 bottmeross meross Smart Water Detector with Hub, Smart Water Alarm with App Alert, Water Leak Detector Replaceable Batteries, Wirel Meross Hub Required - Package does not contain hub. Please get a Meross hub first. Meross offers a variety of smart prodX-Sense X-Sense Wi-Fi Water Leak Detector, Smart Water Sensor Alarm, Water Detector Alarm with 1700 ft Transmission Range for Ki Ready to Use: Download the app, connect the devices to the app via the 2.4 GHz Wi-Fi network (incompatible with 5 GHz) aJectse Water Leak Alarm, 85 DB Household Wireless Water Leak Detector Sensor 9V,ABS Plastic,Flood Spot - Next to Bathrooms, Bas Automatic and high sensitivity. Once its three contactor touches the water, it will immediately send out a 85 dB alarm.AzdBvae High / Low Water Level Sensor Detector Alarm 120 dB Red Strobe Siren, Adjustable Alarm Volume, Sump Bobber Water leak Se 【High and Low Dual Probe Sensoe Design】- It can detect water shortage(low level) or overflow(hige level). You can chooseUanTii UanTii Smart Water Leak Alarm Sensor Tuya WiFi Water Leak Detector Flood Detector with 100dB Loudly Alarm Sound Works wi [APP Remote Control] Works with Smart Life/Tuya Smart App; Receive alarm push remotely at any time through the mobile phFinestHouse Door Window Alarm, 90dB Loud Security Sensor for Home Security, Kids & Pool Safety - for Homes, Offices, Hotels, Apartme 【Easy Installation】The magnetic sensor triggers when the door or window opens. Features simple peel-and-stick setup withSwitchBot SwitchBot WiFi Water Leak Detector, No Hub Required (Support 2.4G), Smart Water Detector 100dB Adjustable Alerts & App A Real-time Notifications (No Hub Needed): After connecting to Wi-Fi, you will be able to receive real-time email and appTEHAUX TEHAUX Water Leak Detector Alarm High Sensitivity Flood Sensor with Drip and Leak Alert for Basement Kitchen Fish Tanks Drip alert for bathroom--a reliable and effective solution for water level issues that ensures the prevention of water oKALLORY KALLORY Water Leak Detector Sensor Alarm for Home, Sensitive Waterproof Leak Alarm with Moisture Detection, Water Overfl Immediate alerts: provides immediate alerts when water levels rise, allowing you to take to prevent further damage,watermeross meross Smart Water Detector Hub Needed, Leak Detector with App Alert, Smart Water Alarm Replaceable Batteries, Interlink Meross Hub Required - Package does not contain hub. Please get a Meross hub first. Meross offers a variety of smart prod17% Off UanTii UanTii Smart Water Leak Sensor with Sound Alarm Tuya WiFi Water Overflow Level Detector Wireless Flood Leakage Sensor Re 【Two monitoring modes】 water leakage monitoring, low water level monitoring.Even if you are not at home, you will be notARTIBETTER ARTIBETTER Water Leak Detector Alarm Sensor for Home Loud Sound Water Level Alert for Basements Fish Tanks and Pools Acc Detector for home: its installation is easy and straightforward, without any complicated steps, for basementＢｅｓｇａ Ｂｅｓｇａ Water Level Alarm Water Detector, Easy to Use, Sturdy, Water Leak Alarm Water Overflow Alarm for Swimming Pool Tan 【Functionality】: This water level alarm alarm is designed to alarm you immediately when it detects an abnormal water levShurzzesj Shurzzesj Water Sensor Alarm Leak Detector - Water Leakage Detection Monitor Alarm Device For Home | Loud Water Leak And Excellent Leak Monitoring: This water leak detector for home is able to detect a slow drip from a pipe or an overflowingBarbuly Barbuly Zigbee Water Immersion Sensor Smart Life Leakage Sensor Water Linkage Alarm App Remote Monitoring Water Leak Det 3. Keep your house safe all the time.A really good assistant for your smart house, no more worry about the flood with thQANYEGN QANYEGN Water Leak Alarm Detector, Watchdog Water Alarm, Overflow Leakage Sensor for Home Sink Fish Tank Pump (120dB Lou HIGH EFFICIENCY WATER LEVEL ALARM: The water level alarm detects overflow and leakage quickly, ensuring the safety of yomeross Meross Smart Water Detector with Hub | Water Leak Sensor WLAN IP66 | Up to 100 dB Sensor & App & Hub Alarm | Smart Water Smart water leak sensor with high sensitivity and quality: this WiFi water leak detector has highly sensitive and reliabHaozee Haozee Zigbee Water Leak Detector Sensor for Home, Pack of 3, Water Alarm with Battery Operated, Zigbee Hub Required, Su REAL TIME WATER LEAK DETECTOR This intelligent water leak detector is equipped with a high sensitivity sensor. High sensRUIKORING WiFi Water Leak Detectors 5 Pack, 120dB Adjustable Loud Water Leak Sensor, Wireless Wi-Fi Water Leak & Drip Alarm, App A Reliable 2.4GHz WiFi Connection: This smart water leak detector set supports 2.4GHz WiFi networks only. Effortlessly conRUIKORING WiFi Water Leak Detectors for Home 3 Pack, Wireless Smart Water Leak & Drip Alarm, 120dB Adjustable Loud Water Leak Sens Portable Design & Easy Installation: Our smart water leak detector sensors features a compact design, allowing for easyEve Eve Water Guard (Apple Home) - Smart Home Water Leak Detector, 2 m Sensing Cable (extendable), 100 dB Siren, Water-Leak Eve Water Guard requires iPhone or iPad with the latest version of iOS/iPadOSNULETO Nuleto WiFi Water Leak Detector 1s,Smart Water Sensor Alarm,Water Alarm with SMS,Phone Call,APP Push,492ft for Home,Base Whole-Property Coverage: 1 Smart Gateway can manage up to 99 Water Leak Sensor over 150m/492ft – perfect for multi-room33% Off Tuehakny WiFi Water Level Detector, Intelligent Water Sensor Alarms, Separate 5M Dual Detection Line, Left and Right Dual Alarms, Exclusive design and technical innovation: the first separate 2-in-1 double probe construction that meets the requiremenRoloiki Roloiki Smartlife app WiFi Water Sensor Water Leak Detector Water Level Leakage Sensor Alarm SmartHouse Voice Control Fl Smart Water Leak Detection：Detects water leakage and abnormal water levels instantly, helping prevent flooding damage inChuango Chuango WI-210 - Water Detector for Chuango Alarm Systems, Tamper Protection, Transmission Range 80 m The water detector is an important part of your Chuango smart home solution to protect your home from leaking liquids. TGeneric Water Pipe Leakage Monitor, Underground Water Pipe Leakage Detector, 70Ddb Powerful Sensitivity 20000X Sound Amplificati Powerful Sensitivity: ‑70Ddb probe head sensitivity allows users to detect tiny leakages in wall in a timely and accuratKaifucy Kaifucy Tuya WIFI Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works Applicable life scenarios: There are always some unexpected accidents in life, stop water and forget to turn off the fauzauzau Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Adjustable Wet Moisture Ale 1YoLink YoLink Smart Home Starter Kit: SpeakerHub & Water Leak Sensor 4 with 105dB Audio Alarm 3-Pack, SMS/Text, Email & Push No Comprehensive Leak Detection Kit: Get started with the YoLink SpeakerHub Leak Detection Starter Kit, featuring one hub aLancoon Lancoon Cordless Water Detector 100dB WiFi Alarm Place Anywhere Leak Sensor for Bathroom Kitchen Under Sink Battery Oper 💧【Instant Dual Alerts】Our WiFi water leakage alarm features a loud 100 dB siren combined with Tuya app notifications, eabyyloe Sump Pump Alarms-Indoor/Outdoor High Water Septic Tank Alarm- 12ft Level Float Switch-with 110dB Loud Alarm and Large LE Septic tank alarm-Anti-flooding function: detects the water level in the cesspool or septic tank through the float switcMETAK METAK Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Adjustable Wet Moistu Drip & Leak Alerts: Water leak detector alarm is designed with 4 rear water leakage detection probes and 2 front drip prPlyisty Water Overflow Sensor Detector 120dB Water Leakage Alarm System, Simple Install, Low Power Consumption, Sensitive Sensor [EASY TO INSTALL AND USE] This water leak alarm is cleverly designed for simple installation and ease of use.NESOVI NESOVI WiFi Water Sensors for Leaks: 110dB Water Detector with APP Real-time Notification | 5Pack Water Sensor Alarm Lea Friendly Feature: When a water leak is detected, the water sensor and gateway sound a 110dB alarm and flash blue lights,X-Sense X-Sense Smart Wi-Fi Water Leak Detector, Water Sensor Requires Base Station SBS50, Accessory for SWS54 Water Sensor Kit, Expand Your Smart Home Your Way: The SWS51 water leak sensor is an accessory for the SWS54 kit that connects to the SBS5QHHR Sump Pump Alarm High Water Alarm for Septic Sump Pump Pond Water Tank Features a Bright Flashing Light and 110 db Alarm, The product is equipped with a high water level alarm control panel and a float switch, which can be used independentlyZLHETWT Underwater Metal Detector IP68 Fully Waterproof Handheld 4.2inch Coil Metal Detector with LED and Alarm GT-120 Metal Fin 【Precise Positioning】This handheld metal detector is designed to accurately locate ferrous and non-ferrous metal objectsBewinner Bewinner Water Leak Detector, Wall Pipe Leak Listen Detector with Wireless Sound Amplifier 15000x, Underground Monitor w Multifunctional Water Pipe Leakage Tester: Water leakage sound amplifier is ideal for detecting leakage in pipes, buildiBlueAOQ BlueAOQ WiFi Water Leak Sensor Water Leakage Intrusion Detector Alert Water Level Overflow Alarm Tuya Smart Life App Rem 【APP Remote Control】Simple download APP "Smart Life/Tuya" on iOS and Android to add the device to detect the water levelGeneric Generic Water Leak Detector, Water Alarm Leak Detector Sensor DC9V 120dB ABS Overflow Level Alarm Rain Detection with Do 【Wide Application】 - The water leak detector is designed for versatility, making it suitable for various locations proneAzdBvae High / Low Water Level Alarm Sensor Detector Not - Overflow, Water Alarm for Sump Pump w/ 120 dB Strobe Siren, Water Lea 【High and Low Dual Probe Sensoe Design】- It can detect water shortage(low level) or overflow(hige level). You can chooseHojellyTek Ultrasonic Level Sensor with 2.4G WiFi,Non-Contact Liquid & Solid Level Monitor,Tuya Smart & Smart Life APP Remote Contr Real-time remote monitoring via dedicated APP, check liquid/solid level data anytime and anywherePeakloong Peakloong IP67 Water Immersing Sensor Tuya Zigbee Flood Water Leak Detector Smart Alarm Security Soaking Sensor for Smar Smart Connectivity: Utilizing Zigbee technology, allowing for real-time alerts and remote monitoring through your smartpEPTTECH EPTTECH Smart TLC2326P Remote Detector Display Screen Tuya Smart Life Mobile APP Liquid Water Oil Fuel Level Tank Monito EPTTECH EPTTECH Smart TLC 2326-WF-S Tuya APP Efficient Solar Panel Rechargeable Battery Liquid Level Monitor WiFi Water Oil Tank LONG MEASURING DISTANCE: 10cm to 2.9m(4 to 114 inches) from the sensor, which is suitable for different tanks.YUNFANG WiFi Flood Sensor, WiFi Water Leak Sensor Water Leakage Intrusion Detector Alert Water Level Overflow Alarm Tuya Smart L 💡【APP Remote Control】Simple download APP "Smart Life/Tuya" on iOS and Android to add the device to detect the water levTasmegol Tasmegol Wpp123 Metal Detector Wall Scanner Wire Pipe Power Detector High Sensitivity Adjustable Water Pipe Stud Finder 【Adjustable Sensitivity】 Fine-tune the detection range to suit your needs, ensuring maximum accuracy for every task.Shonmau High/Low Water Level Sensor Detector Alarm 120 dB Red Strobe Siren, Adjustable Alarm Volume, Sump Bobber Water Leak Sens Dual Bobber Probes Sensor Design - It can detect water shortage or overflow. You can choose to use one or both functionsGeneric Home Water Detector Alarm,Water Leak Detector for Home - Sensitive Water Leak Monitor, Waterproof Detection Device - Lea Excellent Leak Detection - Stay one step ahead of leaks with our water leak detector. Featuring state-of-the-art drip anRisinglink Risinglink Smart Water Level Monitor, WiFi-Enabled, Text/Email Alerts, Indoor/Outdoor Detector, Battery Powered, Stainle NO HUBS, APPS, OR MONTHLY FEES: Easy WiFi setup with no hub, no app, no subscription, and no monthly fee—just connect anFafeicy Fafeicy Liquid Level Transmitter TL-136 Liquid Level Transmitter Water Sensor Detector 12-32VDC 4-20mA Signal Output for Input level transmitter: High precision diffusion of silicon, more accurate monitoring of water level.NDI NDI 4 in 1 Pin Moisture Tester, Digital Water Tester, Wood Moisture Meter, Backlit LCD Display Automatic Alarm, Low-batt Versatile Design: The wood moisture meter can accurately measure the moisture content of wood, perform humidity testingSEWOART SEWOART Water Leak Detector Alarm with Flood Sensor and Drip Alert for Home Basement Kitchen Bathroom, Water Sensor Leak Water alarm sensor: 💦water leak detector, water sensor alarm flood detector for basements, bathrooms, laundry rooms, kiTOVINANNA TOVINANNA Water Detector Alarm Flood Sensor White Plastic Stable Easy Installation Water Leak Alarm for Basement and Fis Loud audible alert: this water sensor emits a powerful alarm sound that promptly notifies you of any leaking or rising wTopvico Topvico Flood Alarm Water Leak Sensor Detector 130dB Work Alone Home Security 3 Pack 120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn offFolany Water Leak Detector Sensor Alarm, Smart Water Leak Detector, 120dB Overflow Flood Level Leaks Alarm Flood Alarm Home Rem WATER LEAK DETECTION】: Our smart water leak detector sensor alarm provides full water leakage detection for your home kiNAMOARLY NAMOARLY 2Pcs Battery Operated Water Leak Detector with Moisture Detection Alert for Home, Flood Detection Sensor for La Versatile installation: the set includes detectors, making it suitable for installation in multiple areas of your home,DIYables DIYables Water Sensor Detector for Arduino, ESP32, ESP8266, Raspberry Pi, 5 Pieces Used to detect the presence of water, water leakageLancoon Lancoon Water Detector Alarm with Remote Control 1.1m Probe 120dB Siren 3 Alert Tones Low Battery Warning for Vacation H 💧【Advanced Water Detection Technology】Our water detector alarm features a 1.1-meter immersion detection line and stainlVENEKA VENEKA Tuya Zigbee Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works After the water has returned, the alarm be released synchronously.Generic Tank Level Sensor - Contactless Liquid Detector, External Water Level Monitor | Accurate Water Tank Indicator Sensor, De Contactless Installation - Our liquid level sensor detects various liquids without direct contact, avoiding corrosive frintendvision Geiger Counter Nuclear Radiation Detector - Portable Radiation Dosimeter Tester Beta Gamma X-ray Radioactivity Detector 【Nuclear Radiation Detector】Portable, personal & group use. Detect ionizing nuclear radiation Beta, Garma, X-ray. Quick,YDuupxe TL 136 Water Level Sensor Detector Liquid Level Sensor Transmitter 24VDC 4‑20mA Output (Measuring Range 0-4 Meters) Stable Output ： All digital conditioning circuit ensures a stable 4-20ma output for reliable performanceTbest Tbest 120dB Water Alarm Detector, Home Sink, Fish, Pump Overflow Leakage Sensor, Reliable and Efficient in Detection Wat 120db Alarm: Emitting a continuous 120dB alarm sound, this home water alarm is suitable for various scenarios such as kiMETAK METAK Water Leak Detector Alarm: WiFi Water Flooding Monitor Smart App Sink Overflow Monitoring Adjustable Wet Moisture Drip & Leak Alerts: Water leak detector alarm is designed with 4 rear water leakage detection probes and 2 front drip prSEBSON SEBSON 3x Water Alarm Mini GS153, 10 year long term battery, water detector 60x60x24.2mm, sensor with lithium battery Water detector GS153 with permanently installed 10 year lithium long-term battery.Leytala Durable Fish Tank Alarm, Water Alarm, Plastic With Battery Delivery for Aquarium Water Level Monitoring GuDoQi GuDoQi Water Leak Detector With Loud 130dB Alarm - Flood Sensor for Home Security, Bath Overflow Detection - Battery Inc Powerful 130dB alarm, easy to be heardGuDoQi GuDoQi Water Leak Detector With Loud 130dB Alarm - Flood Sensor for Home Security, Bath Overflow Detection - Battery Inc Powerful 130dB alarm, easy to be heardPOENVFPO POENVFPO Water Leakage Alarm Isolation Layer Detection Circuit Auxiliary Electrodes for Warehouse Protection [SWIFT LEAK DETECTION]: Fast response time for timely identification of water leaks.FUNFANG FUNFANG High Sensitivity Water Leak Alarm Wireless Detector with Remote Notification for Home Kitchen Bathroom Usage [Superior Sensitivity and Rapid Response] : Our water leak detectors provide immediate alerts when a leak is detected, eGYZOUKA GYZOUKA 120dB Water Alarm Detector Sensor with Gold Plated Probes for Home Kitchen Bathroom and Basement Protection Versatile Placement: Suitable for monitoring aquariums water heaters plumbing fixtures and basement areas, this water seGeneric Water Leak Alarm Flood Level Bath Tub Sink Overflow Detector Sensor Home Garage Kitchen Security Alert Water Leak Alarm Flood Level Bath Tub Sink Overflow Detector Sensor Home Garage Kitchen Security AlertAngoily Angoily Water Level Alarm Drip Leak Detector Water Leak Detector Water Detector Alarm Water Alarms for Basements Leak De Water leak sensor-- this alarm produces a loud sound to immediately draw attention to any water level issues.XUMIUZIY XUMIUZIY Digital Water Cooling Meter Alarm G1/4 Inline PC Water Cooling Monitor with Real Time Temperature RPM Display f Comprehensive Monitoring And Alert Function: The water cooling digital meter integrates data display and alarm functionsGallagher Gallagher Wireless Water Monitoring System Series 2 - Monitoring System for Water Tanks, Corded Electric, Lithium-Ion Ba Power Source: Corded electric power source for reliable and continuous operation, no need to worry about battery replaceSharainn Sharainn Water Leakage Detector, Underground Water Pipe Leakage Monitor, -70D Db Probe Water Pipe Leak Sound Intensifier 【Excellent Listening Experience】: Equipped with 32Ω earphones and the option to connect to a 16 ohm speaker for clearerGeneric Home Water Detector Alarm,Water Leak Detector for Home,Sensitive Water Leak Detection Alarm for Basement | Water Leak an EXCELLENT LEAK SEARCH - Keep up with leaks with our water leak detector. Featuring state-of-the-art leak and drip detectMengshen Mengshen 2 Pack WiFi Water Leak Detector Water Leak Alarm Alert for APP Notification Smart Water Sensor Work with Tuya & 💧【24/7 Water Leak Protection Alert】 Triggers 75 dB alarm sound if detects tiny leaks or floods (even drips!) and sendsFlood Buzz Flood Buzz Water Leak Detector Sounds Alarm (Set of 3) LOW-COST, LOUD AND EFFECTIVE water leak alarm designed to help mitigate damage and avoid the associated liabilities andGeneric Water Leak Detector, IP66 Water Proof 90dB Water Leakage Sensor for Home Bathroom Underground Sink Laundry Flood Kitchen 90dB Sound: Our water detector emits a powerful 90dB sound, ensuring immediate reminds even with minimal water detectionShackcom Water Leak Detector 2 Pack, Shackcom Water Alarm 110DB, Wireless, Waterproof & Battery-Operated, Audio Alerts for Bathro Detects as little as 1/32 inch of water to offer an effective early warning systemGadpiparty Gadpiparty Water Leak Detector and Loud Alarm 2pcs, Flood Detection Sensor for Home Basement Laundry Bathroom, Moisture High detection accuracy: the detector is highly accurate in detecting water presence, ensuring that even leaks are identZFLYCANP Underwater Metal Detector Handheld,Metal Detector for Adults,IP68 Fully Waterproof Rechargeable Met,Underwater Metal Pro [Accurate Locating]This handheld metal detector is designed to accurately locate ferrous and non-ferrous metal objects dNOENNULL Water Leak Sensor Detector Flood Alarm for Basement 120dB Operates on Batteries Only 120dB loud alarm sound makes the alarm notice you until the water is dry or the sensor is turned off.Leopacat Leopacat Non Contact Liquid Level Sensor, Contactless Water Sensor Externally Attached Induction Switch Tank Intelligent Advanced Non-Contact Liquid Level Detection: Our state-of-the-art PNP output water level switch employs cutting-edge pro