Household Sensors & Alarms Categories
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Best Choice Mengshen 
Mengshen Motion Sensor Alarm, Wireless Doorbell Alert for Front Door Door Entry Driveway Mailbox Home Shop Visitors with Wireless Motion Sensor: Remote transmission, 280 meters in the open place, suitable for more places,Daytech 
DAYTECH Door Alarm Sensor Volume Adjustable Door Open Sensor Chime 0-120 dB Window Alarm with 4 Modes for Kids Safety De Volume Adjustable Door Alarm: This door and window alarm is used to alert you when a door or window is opened by 0-120DBBest Value Meichoon 
Meichoon Motion Sensor Alarm Wireless Detector Home Security Alert System Doorbell for Front Door Indoor Room Entry Driv ✨Expandable Wireless Home Security - Independent alarm horn,maximum 113dB, can effectively scare the thieves and intrudeSECRUI 
SECRUI Wireless Door Chimes When Entry for Business/Home/Office/Store (500ft Range 32 Chimes Adjustable Volume) Door Ope Easy to Install: The SECRUI door sensor installation operation is simple and does not require the use of any wiring or sDogxiong 
4 Pack Security Window/Door Alarm, Door Open Chime, Magnetic Burglar Alert Sensor, Loud Door Alarms for Kids Safety, DIY Big LOUD ALARM – door window sensors loud enough to detects entry, prevent kids and babies going out the house, protectiCPVAN 
CPVAN 125dB Loud Motion Sensor Alarm with 328ft Remote Control (40ft PIR Detector, Batteries), Indoor Wireless Infrared Super Loud and Easy to Use👉 CPVAN Motion Sensor Alarm is designed with 125dB alert device and simple operation, which c15% Off HoneTeek 
Motion Sensor Detector Door Chime for Business Store Entry Alert, Welcome Buzzer Monitor Doorbell Alarm for Home Elderly ✨【Welcome Buzzer Monitor】The owners can use the doorbell to be alerted when people enter or leave. Use it to detect visiUanTii 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 phMengshen Mengshen Motion Sensor Alarm, Driveway Entry Alert Support 5 Modes, 36 Tunes, Long Transmission Distance (Remote Control 5-In-1 Multifunctional: Receiver has 5 modes, Welcome/ Doorbell mode(36 Tunes available)/ Alarm/ Colorful light/ Night LAiBest Door Window Alarm, Burglar Alarm, Home Security Wireless Magnetic Sensor Anti-Theft Alarm (Home Alarm (12 pcs)) Super loud 95 dB alarm. When someone opens the door or window illegally (the relative position of the primary and secondPrice Xes Wireless Home Security Alarm System DIY Kit - Magnetic Sensor - Guardian Protector - Window Glass Vibration Security Bur ✔Magnetic sensor switch detects entry protecting your home or office whether you are in or out.Daytech Daytech Door Sensor Chime Entry Alert Chime Wireless Door Window Open Alarm with 5 Volume Levels for Home Store Apartmen How This Door Open Sensor Alarm Works: Door sensors are devices that let you know when someone has opened a door. When dJectse 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.meross meross Smart Presence Sensor, Matter Motion Detector with Light Sensor for Home Automation and Security, Pet Friendly, C Matter Multi-platform Compatibility: Use any Matter-supported hub (e.g., Amazon Echo, Google Nest) to control this preseBetterlink 1/2 Mile Long Range Solar Wireless Driveway Alarm System IP65 Weatherproof Outdoor Motion Detectors&Sensor 120dB Siren S Easy to install and expand: This wireless solar driveway alarm system is easy to install. It can be installed on walls,Generic Door Window Alarm - Window Sensors for Home Security - Anti-theft Alarms Security - Wireless Door Alarm System - 130dB L (Simplified Window Security) The device can be easily activated by vibrations. The alarm and flashing light will activatEPTTECH 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.Generic Portable Motion Sensor Alarm - Motion Activated Wireless Security Device for Home and Travel | Compact Intrusion Alarm w ENHANCED NIGHT SECURITY: Keep your loved ones safe by setting motion sensor alarm at night. Effectively prevents intrudeHIIXHC Personal Security Window & Door Alarm Bell | Wireless Sensor Door Window Burglar Alarm | Pack of 10 【Easy to use & User description】 Magnetic sensor switch detects your door or window. Easy stick installation and operatiSlaige Motion Sensor Doorbell for Business Entry, Store Welcome Buzzer Monitor, Outdoor Door Chime Kit: Infrared Motion Sensor ❤️ 【Easy, Fast, Wire Free Installation】 Infrared sensor detects motion and sends a signal to the receiver. Chose from 36Wuloo Solar Driveway Alarm Wireless Outside 1800ft Range, Outdoor Motion Sensor & Detector Driveway Alert System with Recharge Reliable & Dependable: 1/3-mile long range (1760 ft.; 536m) tested in real-world settings with trees, buildings, walls,Slaige Motion Sensor Doorbell for Business Entry, Store Welcome Buzzer Monitor, Outdoor Door Chime Kit: Infrared Motion Sensor ❤️ 【Easy, Fast, Wire Free Installation】 Infrared sensor detects motion and sends a signal to the receiver. Chose from 36EPTTECH EPTTECH TLC2206 Tuya Smart Life Mobile APP Wireless WiFi Remote Ultrasonic Real-time Reminder Contactless Outdoor Waterp LONG MEASURING DISTANCE: 10cm to 3.0m(4 to 118 inches) from the sensor, which is suitable for different tanks.Daytech DAYTECH Motion Sensor Door Chime, Wireless Doorbell for Business Entry with 3 Working Modes Welcome Infrared Motion Sens 【Motion Sensor Doorbells for Entry】Place the motion sensor at front door, the Receiver will sound to remind you that somPlyisty 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.HENDUN HENDUN Motion Sensor Doorbell, Door Chime for Business, Store Welcome Buzzer Monitor, Commercial Door Entry Alert,Motion ✅EASY, FAST, WIRE FREE INSTALLATION sensor detects motion and sends a signal to the receiver. More than 1 transmitter SKMengshen 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,VEAUUTAY VEAUUTAY WiFi Smart Motion Sensor Alarms System Motion Detector Outdoor Weatherproof Wireless Infrared Security Motion D SHARED DEVICES: The WiFi Motion Sensor Alarm System is more secure. You can connect phone (Tuya) to share the device witMengshen Mengshen Door and Window Alarm, Anti-Theft Burglar Wireless Alarm with Remote Control for Home Security, Easy to Install Home Security Alarm: Super loud alarm of 105dB, scare thief away,Mellisso Mellisso 3 Pack Solar Strobe Light with Motion Sensor Alarm 129DB Sound Security Siren IP65 Waterproof for Villa Farm Ya Long lasting:After fully under sunlight, the sound alarm can work for about 30 days. No worry run out of power.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 chooseDaytech DAYTECH Door Alarm Sensor Window Alerts for Home Security 120dB Door Open Alarm with Low Battery Alert for Kids Safety D Door Alarms When Opened: DAYTECH Door alarm sensor can detect the opening/closing of doors and windows, guarding securitTELLUR TELLUR Smart WiFi Water Leak Alarm, Water Sensor, Phone App, Acoustic Alarm and Push Notification, Works with Typical LR EASY TO INSTALL AND USE - With TELLUR Smart App, Smart life app, tuya app (iOS & Android). independent use through interCHUSHEN Solar Motion Sensor Alarm Outdoor Solar Alarm 120dB Loud Siren LED Strobe Lights Sound Security Alarm Adjustable Sensing 🥁 Solar Energy Alarm Light: this solar alarm strobe light can frighten away intruders and thieves by siren and strobe lDaytech DAYTECH Freezer Door Alarm with Delay 1/2/3/4 mins When Left Open Window Chime Close Reminder Refrigerator Door Alarm 0 Freezer Door Alarm When Left Open: When the alarm and magnetic sensor are separated by more than 0.6inch(1.5cm), The alaSukiola Sukiola Tuya Zigbee Human Presence Detector with Holder Smart Human Body PIR Sensor MmWave Radar Microwave Motion Sensor ZigBee Hub as Control Center:Tuya ZigBee gateway is required for this ZigBee human presence sensor,performing as the cenUanTii UanTii Tuya WiFi PIR Motion Sensor Movement Detector Alarm Smart Life APP Wireless Home Security System Compatible with 【APP Remote Control Tuya WiFi Motion Sensor】Simple download APP "Smart Life/Tuya Smart" in App Store or Google Play addYUNFANG Door Sensor,WiFi Door Sensors Alarms Contact Wireless Door Window Magnet Entry Detector Sensor for Home Security APP tuy Door magnet is a safety alarm device used to detect whether doors, windows, drawers, etc. have been illegally opened orMETAK Water Leak Detector Sensor Alarm: Home Water Flooding Monitor Smart Sink Overflow Monitoring Adjustable Wet Moisture Ale Drip & Leak Alerts: Water leak detector alarm is designed with 4 rear water leakage detection probes and 2 front drip prEPTTECH 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.Yardenfun Yardenfun Leak Detector 85db Alarm Water Leak Sensor Battery for Kitchen Bathroom Basement Fish Tank White Flood sensor: suitable for fish tank, kitchen, , and etc,leakage protection.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 persistsintendvision Gas Leak Detector, Natural Gas Detector with 3-Sensitivity Adjustable, Temperature & Humidity Measurement, Audible & Vis 【3 in1 Portable Gas Leak Detector】This 3 in 1 gas leak detector is designed to combine the functions of gas leak detectoX-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 station19% Off Yasao WiFi Siren Alarm Sensor Smart Alarm Siren Home Security System Tuya Smart Life APP Compatible with Alexa Google Home Voi 💌[【APP Remote Control & Voice Control】No matter how far away from home, the warmth of home is in hands. Making your homEPTTECH 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.meross Meross Smart Water Detector WLAN Water Alarm 3 Pieces for HomeKit, Water Sensor with Hub Compatible with Apple Home, Ale Remote monitoring and automation: compatible with Apple HomeKit, Alexa and SmartThings, easy to set up, monitor water leWHAMVOX WHAMVOX Leak Detection Device Waterproof Water Leak Alarm Sensor for Home Safety Home flood protection: provides reliable protection against household water leaks, helping to prevent water damage and mWuloo Wireless Driveway Alarm 1800 Feet Long Range Motion Sensor Alert System Driveway Detector for Home with 1800mAh Recharge Reliable & Dependable: Guaranteed 1/3-mile long range (1760 ft; 536m) tested in real-world settings with trees, buildingNoorio Noorio Motion Sensor, App Alerts, Triggers Siren, 2-Year Battery Life, Broad Detection Range, Requires Noorio Smart Hub [Detection Range] Noorio motion sensor alarm detects motion that happens within 120 degrees, 32 feet. It is a perfect adNoorio Noorio Motion Sensor, App Alerts, Triggers Siren, 2-Year Battery Life, Broad Detection Range, Requires Noorio Smart Hub [Detection Range] Noorio motion sensor alarm detects motion that happens within 120 degrees, 32 feet. It is a perfect adShelly Shelly Flood | Wireless Flood Sensor with Temperature Measurement | Home Automation | iOS Android App | Dripping & Leaki Shelly Flood is a smart water leak detector connected by wifi. It can also measure the floor temperature in your home. T10% Off Daytech DAYTECH Wireless Door Chime Doorbell, Waterproof Door Open Contact Sensor Alarm with 500Ft Range and 5 Adjustable Volume How This Door Open Alarm Works: Door sensors are devices that let you know when someone has opened a door. When door orSYNLETT SYNLETT Caregiver Pager 2 Wireless Call Buttons 1 Motion Sensor Alarm Indoor for Elderly Monitoring Fall Prevention Bed PORTABLE CAREGIVER PAGER: This wireless caregiver pager system comes with 2 wireless call buttons, 1 motion sensor alarmS SELDORAUK S SELDORAUK Dog Barking Alarm Motion Sensor - 1000 Feet Wireless Home Security Driveway Alarm Kit (1Receive+1Motion Dete 【6 Realistic Dog Barks sounds】 : 6 dog barking choices in big volume .The motion detector very sensitive,Pir human bodyLancoon Lancoon Solar Sound & Light Alarm Outdoor Motion Sensor Waterproof Device 110db Siren Sound Alert Flash Warning Security 🏡【Animal Repellent Outdoor】The performance of our device is based on a double effect. First, the rapid flashing of theGeneric 2 Pack Wireless Home Alarm with 4 Remote Control 105db, PIR Motion Sensor Anti-Theft House Security, for Driveway Shed G WIDE RANGE OF USES - Motion detection is an essential part of any home security solution. The sensors in this system useGoerpn 2 Pack Ultra Slim Window Alarm - 130dB Vibration Sensor for Security - Glass Break Alert for Home, Office, Dorm Room, RV 【Ultra Thin Window Alarm】A slim, modern shock sensor alarm designed for windows and doors.SPARTHE SPARTHE Gas Leak Detector Alarm for Caravan, Boats Gas Detector-Accurate detection and security protection.Fast response, high-pitched alarmUanTii UanTii Tuya WiFi Door Window Detector with Light Sound Alarm Wireless Door Alarm Sensor for Home Security Smart Home Doo 【No hub required】The window Door alarm sensor works with directly Tuya Smart/Smart Life App and Alexa Google Home, no huMETAK 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 detectionXIMING XIMING Water Leakage Alarm - Sensitive, 120dB, Battery Operated, Compact, Waterproof, Easy to Install, Suitable for Bath Waterproof design, the alarm will float on the water surface as water goes up. Prevent the electronic components from daLETWESAF Wireless Radar Motion Alarm System, 1/2 Mile Range, Hideable Motion Sensor & Detector, Rechargeable Battery, IP65 Waterp 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐑𝐚𝐝𝐚𝐫 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲: This smart motion sensor alarm system uses millimeter-wave radar for sKOOBOOK KOOBOOK 3Pcs High Decibel Water Leakage Detector Sensor Household Water Leak Monitor Sound Light Alarm Device Waterproof Material: ABS Plastic;It has high performance and high sensitivity, small size and strong applicability.Geevon Geevon 10 Pack Water Leak Detectors, 100dB Water Sensor Alarms Flood Detector for Basements, Bathrooms, Laundry Rooms, K LOUD 100DB WATER LEAK DETECTORS FOR HOME- Each water sensor alarm leak detector features ultra-loud 100dB alarm audio whTHE BASEMENT WATCHDOG THE BASEMENT WATCHDOG Model BW-WA360 110 dB Battery Operated Water Alarm Patented design allows it to detect water on any sideResideo Resideo CHW3610W8001 WiFi Water Leak Detector For Home, Smart Water Sensor Alarm and Freeze Detector, Water Detector Ala WiFi water leak sensor - When you're away, you can depend on the L1 WiFi water alarm leak detector to monitor temperaturShonmau Solar Water Level Alarm, Dual Probe High/Low Water Sensor, 129dB Adjustable Strobe Alarm, Tank/Fountain, Swimming Pool e Upgraded solar charging design: IP55 rainproof and dustproof design, with high conversion solar panel, integrated recharHEALTHY CHOICE Healthy Choice 70-Liter Auto Sensor Trash Bin - Wave Your Hand for Auto Open/Close, Waterproof Lid, Optional Manual Oper Auto Sensor Operation: Enjoy hands-free waste disposal by simply waving your hand over the sensor to automatically openPomya Wireless Security Keypad Alarm System, PIR Motion Sensor Alarm Password Keypad Remote Infrared Detectors with Panic Butt This Motion Sensor Alarm is for protecting your property against unwelcome intruders.TEHAUX TEHAUX Water Leak Detector Sensor Alarm High Sensitivity Water Leak Detection System with Sound Light Alerts for Home Ba Sensitive water sensor: high sensitivity sensor detects water presence rapidly, ensuring timely intervention to preventSCS Direct Water Leak Monitoring Sensor with Alarm 3 Pack - Leak Bug Electronic Water & Flood Leak Detector - Detects as Little as Water Alarm- Finds Leaks before damage occurs - sensitive to just 1/32 of waterHEIMAN HEIMAN Wi-Fi Water Alarm, WLAN Water Detector with Battery, Smart Water Sensor, 75 dB WiFi 2.4 GHz for Kitchens, Basemen With 5 year lithium replaceable long-term battery.20% Off Daytech Daytech Door Sensor Chime Wireless Door Alarm Sensor When Opens, Entry Alert Buzzer Doorbell Chime for Business Home Sec 【PROTECT SAFETY OF YOUR FAMILY】 If you have elderly with dementia, the door sensor chime can protect your aged parents fCHUSHEN Smart Window Door Magnet,WiFi Door Alarm Window Sensor Detector Smart Home Security Tuya SmartLife App Control Compatibl 🥁 【Enjoy Your Smart Life】When you leave home, it will push notification message to you when the door/window opens or clCordoode Propane Alarm | 12V High Sensitivity Leak Detector - Alarm Monitor Sensor for Home, Kitchen, Trailer or RV, Leak Detecto Audible Alarm: Equipped with a sensitive sensor, our propane detector helps reduce worry about accidents, protecting youGeneric Solar Motion Sensor Alarm Alarm 120dB Loud Siren Strobe Lights Sound Security Alarm Adjustable Sensing Distance IP65 Mot ✅【Solar-Powered Alarm Light】: This solar-powered alarm strobe light is designed to deter intruders and thieves with itsEPTTECH Home Water Detectors 15M Remote Check Automatic Electronic Continuous Liquid Level Indicator Ultrasonic Water Level Cont Detect Range: 5cm-250cmeufy Security eufy Security Water Leak Detector and Freeze Sensor with Remote Alerts, IP65 Waterproof, 2-Year Battery Life, HomeBase R Instant Notifications*: Protect your home from leaks, water damage, and damage from freezing temperatures. Get notificatJectse High Sensitivity Gas Monitor with 4 in 1 Measurement Rechargeable Battery, Sound Light Vibration Alarms, Backlit Display [Multiple Charging Options] This gas tester is rechargeable and can be charged using USB from a computer, car, power banHTZSAFE Driveway Alarm- HTZSAFE 1/2Mile Solar Driveway Alarm System- Up to 70FT Wide Sensor Range- Fully Weatherproof Outdoor Mo SOLAR WIRELESS ALARMS- The outdoor weather resistant solar motion sensor is powered by built-in rechargeable battery, aneMACROS 1/2 Mile Long Range Solar Wireless Driveway Alarm Outdoor Weather Resistant Motion Sensor & Detector- Security Alert Sys NOTE: The receiver come complete with charging cables and adapters. For optimal performance, please ensure to use the prGeneric xinyee Tuya WiFi Multifunctional Air Quality Meter Household HCHO TVOC Carbon Monoxide CO2 PM2.5 PM10 Tester Portable Te ✔️【Compact Size & Remote Tuya APP Control】: The compact body design of this CO2 detector, along with its simple and stylKOQICALL KOQICALL Motion Sensor Alarm Outdoor 120dB Loud Siren Strobe Lights Sound Security Alarm Adjustable Sensing Distance IP6 【Two Charging Methods】The mobile detector is powered by rechargeable lithium battery. The mobile detector can be chargedHEALTHY CHOICE Healthy Choice 60-Liter Auto Sensor Trash Bin - Wave Your Hand for Auto Open/Close, Waterproof Lid, Optional Manual Oper Auto Sensor Operation: Simply wave your hand over the sensor to automatically open and close the lid, providing a touch-gernie Gas Detector, Portable 4 Gas Monitor with Sound Light Vibration Alarm for H2S O2 CO LEL, 4 in 1 Rechargeable Accurate Me [Backlit Display] The gas monitor has a high resolution backlit screen that provides clear readings day and night, ensurLEAFLEX 2 Pcs Garage Door Bracket for Aqara T1 Alarm Entry Sensors, Quick Installation & More Protection for Your Garage Door, G Package includes: 2 Pcs Garage Door Bracket, Includes pastes and screws.KeenWise KeenWise Gas Leak Detector, Natural Gas Detector with Gooseneck, LCD Display, PPM or%LEL Gas Real-Time Gas Concentration Combustible Gas Leak Detector: The GD19 gas detector can quickly and accurately detect gas leaks in hard-to-reach areasGallagher 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 replace10% Off intendvision Natural Gas Detector, Gas Leak Detector with a 11inch Probe to Situate Combustible Gas Leaks for Propane, Natural Gas, M Detects a Wide Range of Combustible Gases 1-50000PMM or 1%-100%LEL alarm range. Detects a large number of flammable gaseCINARIS Air Quality Monitor, Ammonia Test Meter 3.5 Inch LCD NH3 Concentration Tester Ammonia Detector Ammonia Alarm Device Detection range: NH3 ( 0-50ppm) -Power supply：rechargeable Li-battery 2000mah includding USB Chargeing cableGeneric PM2.5 Sensor Module - High Precision Dust Sensor Module - Portable Dust Sensor, PM2.5 Concentration Sensor for Household Precise Design: By utilizing our Dust Sensor Module, you can detect PM2.5 concentration in the air with high accuracy, mGeneric Air Quality Sensor Module - High Precision Air Quality Detection Sensor,Portable Dust Sensor, PM2.5 Concentration Sensor Precise Design: By utilizing our Dust Sensor Module, you can detect PM2.5 concentration in the air with high accuracy, mTopHomer 3Pcs Smoke Detection Sensor, MQ-2 Liquefied Gas Butane Methane Sensor Module for Gas Leak Monitoring Device - MQ-2 Smoke Liquefied Gas Butane Hydrogen SensorEG Gas Leak Detector & Natural Gas Detector: Portable Gas Sniffer to Locate Leaks of Multiple Combustible Gases Like Propan MULTIPLE DETECTABLE GASES: Locates combustible & explosive gas leaks from methane / natural gas, propane, fuel, ethane,KLEIN TOOLS Klein Tools Combustible Gas Leak Detector, Detection range: ~50 to 10,000 ppm*, ET120 Combustible Gas Leak Detector: This portable gas leak tool provides audible and visual alarms in the presence of methaneEPTTECH EPTTECH Smart TLC2326 Tuya Liquid Level Monitor APP Oil Water Indoor IP65 Alarm Sensor Household Indicator Ultrasonic We LONG MEASURING DISTANCE: 10cm to 2.9m(4 to 114 inches) from the sensor, which is suitable for different tanks.JAJAJ Gas Leak Detector Tester Portable Industry H2/CO/PH3/CO2/H2S/NH3/O2/NO2/NO/EX/CH4 Gas Detector Combustible Gas Alarm Det 1. Industrial-grade sensor, high precision, real data, strong stability, real-time detection.Wiley VCH Sensors in Household Appliances: v. 5 Taidacent Taidacent Mini External Sticker Intelligent Non-contact Electronic Water Level Sensor High Low Level Output Liquid Level The non-contact liquid level sensor is suitable for the outer wall of non-metallic containers without direct contact wit