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Household Sensors & Alarms Categories
Best Choice 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. Door sMengshen 
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,Best Value 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 0-120DBGeneric 
xinyee Tuya WiFi Temperature Humidity Light Detection Alarm Clock 4 in 1 Intelligent Sensors Home Household Desk Bedroom 🧜APP Remotes Monitoring: After connecting the Tuya APP, you can check the data on your mobilephone easily, even if youAiBest 
AiBest Home Alarm (12 pcs) - Wireless Magnetic Sensor, 95 dB Burglar Alarm for Doors & Windows Super loud 95 dB alarm. When someone opens the door or window illegally (the relative position of the primary and secondWinhon 
Motion Sensor Alarm,Wireless Motion Detector Door Chime Doorbell for Home Store Business,Caregiver Reminder for Elderly, 【Application】Home Use: Get real-time alerts when someone approaches your house, monitor patient care activities, or keepHoneTeek 
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 visimeross 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 preseJectse 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.Daytech DAYTECH Door Alarm with Remote, 0-120dB Door Alarm Sensor When Opened Window Security Alert with 4 Working Modes for Kid [Window&Door Open Alarm] This door alarm alerts you when a door or window is opened by emitting a 120 decibel sound, whiDogxiong 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, protectiEve Eve Door & Window (Matter) – Smart Contact Sensor for Doors & Windows, Automatic Control of Accessories, Matter & Thread Check your door or window: See the current open/closed state at a glance. Create automations to control other connectedUanTii 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 phWuloo 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,Mengshen 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,intendvision Gas Leak Detector - Natural Gas Detector Portable Handheld Gas Sniffer with Audible & Visual Alarm, Sensitivity Adjustab 【Portable Gas Leak Detector】This portable pen type gas leak detector can detect a large number of flammable gases, likeUanTii 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 addMengshen Mengshen Wireless Infrared Detector IR Motion Sensor Security Alarm with 2 Remote Control Super Loud: 105db.SPARTHE SPARTHE Gas Leak Detector Alarm for Caravan, Boats Gas Detector-Accurate detection and security protection.Fast response, high-pitched alarmX-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 stationSECRUI 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 sMeichoon 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 intrudeCPVAN 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 cEPTTECH 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 125dB Motion Sensor Alarm - High Volume Camping Alarm, Outdoor Anti-Theft Alert | Motion Sensor With Multiple Modes, Sec Revolutionized Security: Ensure comprehensive protection by activating the alarm with 3 quick presses, enter arming modeB-Qtech B-Qtech Carbon Monoxide Detector Alarm with Digital Display and Replaceable Battery Operation, CO Detector Alarm with Te The carbon monoxide (CO) detector is equipped with a high-precision electrochemical CO sensor, which can quickly detectYaSao YaSao Tuya ZigBee Temperature Humidity Sensors Indoor Detector APP Real-time Monitoring Intelligent Linkage Compatible w 💌[This temperature and humidity detector allows you to better understand the current temperature and humidity, allowingSYNLETT SYNLETT Bed Alarm Caregiver Pager with Wireless Motion Sensor Alarm Indoor Fall Prevention for Elderly Monitoring Senior PORTABLE BED ALARM DEVICE: The portable bed alarms and fall prevention for elderly device is applicable at various areasSECRUI SECRUI Door Chime, Wireless Door Alarm Sensor with 500ft Range 32 Chimes Adjustable Volume Mute Mode LED Indicators – Do Easy to Install: The SECRUI door sensor installation operation is simple and does not require the use of any wiring or sDaytech 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 somLancoon 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 containe21% Off Generic Propane Detectors for Home - High Sensitivity Leak Alarm | 12V High Sensitivity RV Propane Alarm | Leak Detection for Ho ✈Constant Protection: Suitable for any place where a 12V power supply is present, this propane detector ensures ongoing18% Off HIIXHC 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 operatiCHUSHEN 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 lCPVAN 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 cS 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 bodyMeichoon Meichoon Window Door Alarm Wireless for Home Security Sensor Anti Theft Burglar Doorbell Chime DIY Protection Ideal for 🔊Multi-funciton Security Alarm - It has the function of arm, disarm, emergency alarm and doorbell, widly meet your demaeMagTech 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 persistsSwitchBot SwitchBot Door Alarm Contact Sensor - Smart Home Security Wireless Window Alarm and Door Sensor, Add SwitchBot Hub Mini [Window & Door Alarm Sensor for Home Security] SwitchBot Contact Sensor can detect the opening/closing of doors and windGoerpn 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.Mengshen 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 LEacam Eacam Door Alarm Window Sensor Detector Smart Home Security Tuya SmartLife App Control Compatible Amazon Alexa Google As 🍀 【APP Remote Control】Download app Smart Life from GooglePlay or App Store to add the device to detect the status of yoHULPPRE HULPPRE Solar Outdoor Motion Sensor Alarm-129db Loud Siren Lamp Noise Maker, 4 Working Modes Strobe Light with Remote,Sa (Keep your families safe and Say goodbye to the unwanted "explorers"): Scare away the intruders to your house,and We undMETAK 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 prAzdBvae 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 chooseBetterlink 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,LEAFLEX 2 Pcs Garage Door Mount Bracket Compatible with A-qara Door and Window Sensor, More Protection for Your Garage Door, Gar Package Includes: 2 Piece Garage Door Bracket with Adhesive and ScrewsMETAK WiFi Water Leak Detector for Home with App Notification, 1 Gateway + 6 WD61 Sensor, 120dB Water Flood/Drip Alarm for Bas [APP Notification] When the water leak detector senses a leak, the 2.4GHz WiFi gateway instantly sends real-time alertsHENDUN HENDUN Motion Sensor Doorbell, Door Chime for Business, Store Welcome Buzzer Monitor, Commercial Door Entry Alert,Motion ✅EASY, FAST, WIRE FREE INSTALLATION door sensor detects motion and sends a signal to the receiver. You may want to takeGeneric Natural Detector - RV Alarm Sensor, High Sensitivity 12V Leak Alarm | LPG Natural Leak Detection LPG Alarm Monitor Senso 【Audible Alarm】Equipped with a sensitive sensor, our propane detector helps reduce concerns about accidents protecting yShelly 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. TWuloo 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, building21% Off Ximimark Ximimark 2Pcs Water Leak Alarm Flood Level Bath Tub Sink Overflow Detector Sensor Home Garage Kitchen Security Alert 120 120dB loud alarm voice, keep alarm to notice you or neighbors until the water dry or sensor turn off, low cost and effecMengshen 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,YUNFANG WiFi Door Sensor, WiFi Door Alarm Window Sensor Detector Smart Home Security Tuya SmartLife App Control Compatible Alexa 💡【Enjoy Your Smart Life】When you leave home, it will push notification message to you when the door/window opens or cloSECRUI Water Sensor Alarm Leak Detector: 120db Water Leak Detector, Water Sensor Alarm for Home Basement Floor, Flood Leakage D Water Drip and Leak Alarm - Water detector alarm with 2 probes on the front to monitor pipes/drains for water dripping,Lancoon Lancoon Door Alarm with Remote 2 Pack, Wireless Home Security Window Open Magnetic Sensor Burglar Alert for Home Garage 🚪 105dB Loud Alarm: Alarms can be mounted on all kinds of doors and windows. Once triggered, loud alarm will effectivelIDENTER IDENTER Water Leak Detector with Sensor Alarm, Power Insufficient Detection, Auto Shut-Off, Water-Saving, Home Assistant 【Auto Shut-off】: When water seepage is detected, the switch will automatically turn off to ensure safety and protect agaHEALTHY 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-Tapo 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 triggGeneric Solar Outdoor Motion Sensor Alarm,Red Blue LED Flashing Warning Security Strobe Light 129db Dual Speaker Loud Noise Make 【Solar Sensitive PIR Motion Sensor Alarm Strobe Light】The solar sound alarm siren with led red blue strobe light have 4EPTTECH EPTTECH Smart TLC2326P Remote Detector Display Screen Tuya Smart Life Mobile APP Liquid Water Oil Fuel Level Tank Monito METAK 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 detectionGeneric Tuya ZigBee Wireless Vibration Sensor Motions Shock Real-time Alarms System Transducer Supply Household Warehouse Smart: This wireless vibration sensor is designed to be APP remote control so that you can know the home situation evenDaytech 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 alaSYNLETT 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 alarmMingzhe Digital Electronic Alarm Clock with Temperature Display and Humidity Sensor for Home Office Kitchen Bedroom Study Wall H [Convenient Functions] Features key sound, backlight, and a touch-sensitive interface. the alarm reaches 80 decibels andHEALTHY 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 openVITITE Carbon Monoxide & Combination Gas Detector, 4 in 1 Plug in CO, Natural Gas, Propane, Temp and Humidity Gas Alarm; Design 4-in-1 Combination Gas Detector: The YC302 Pro+ uses high-precision sensors to monitor CO, natural gas, propane, temperaLabymos Labymos Wired Baby Bedwetting Alarm Pee Alarm for Boys Grils Kids Potty Training Elder Care Built-in Battery with Vibrat 【Easy and Convenient to Use】Just wear the alarm to kid's arm by the soft elastic strap and adjust to a comfortable positEnegg Motion Sensor Detector Entry Alert Alarm, Shop/Store/Office/Home Home Security Welcome Chime Wireless Infrared IR Doorbe ⭐ 5 in 1 multi-mode: welcome/doorbell/alarm/color light/night light.Emerald Planet RF Interconnect Photoelectric Smoke Alarm with 10 Year Lithium Battery | Emerald Planet Ranger (EP-RANG-RF-10) 10-year 3V lithium batteryFilfeel
Water Sensor Alarm Water Level Sensor Water Sensor Shelly Flood Sensor Easy to Install Sensitive Water Detector for Aqua 【Wide range of applications】: widely used for aquarium, water tank, kitchen, warehouse, garage, solar water heater and sTEHAUX TEHAUX 1pc Solar Outdoor Alarm Sensor Reliable Household Security Device for Villas and Construction Areas Prevents Fals detector:it can give an accurate alarm even in very strong and variable light conditions, alarmX-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) aintendvision Natural Gas Detector, Gas Leak Detector with 11-Inch Gooseneck, Locating The Source of Propane, Natural Gas, Methane, LP 【Effective Gas Leak Detector】This natural gas leak detector is suitable for LPG, benzene, methane, ethane, propane, butaYUNFANG 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 closeGeneric Water Sensor Alarm Leak Detector - Intelligent Leak Detection Alarm with High Sensitivity | Protects Your Property Again EXCELLENT LEAKAGE - This household water leak detector is able to detect slow flow from an overflowing pipe or sink, usiDaytech 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 securitCHUSHEN 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 clEPTTECH 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.jojofuny jojofuny Water Detector Sensor for Outdoor Home Leak and Drip Alert Alarm Flood Sensor Alarm for Bathroom Water for home:multi-functional, this water leak detector can be used for washing machines, sinks, floor drains and otheEPTTECH 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.KOQICALL KOQICALL Motion Sensor Alarm Outdoor 120dB Loud Siren Sound Strobe Lights Security Alarm Adjustable Sensing Distance Rec 【Two Charging Methods】The mobile detector is powered by rechargeable lithium battery, can be charged by solar energy orEP ESSENTIAL PRO Wireless Digital Weather Station LCD by EssentialPRO With Indoor and Outdoor Temperature and Humidity Sensor | Digital T ALL IN ONE REAL TIME MONITORING: Provide real time live temperature, humidity data and calendar function, the EssentialPLancoon 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 themeross 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 leCPVAN CPVAN Indoor Motion Sensor Alarm with Siren, Wireless Infrared DIY PIR Motion Detector Burglar Alarm System, Battery Ope CPVAN BRAND YOU CAN TRUST - The team at CPVAN SECURITY has dedicated more than 10 years and thousands of hours making thSEBSON SEBSON Water Alarm Mini GS153, 10 year long term battery, water leak detector 60x60x24.2mm, water sensor with lithium ba Water detector GS153 with permanently installed 10 year lithium long-term battery.LETWESAF Wireless Radar Motion Alarm System - 1/2 Mile Range, Hideable Motion Detector, IP65 Waterproof, Rechargeable Battery - I 𝐀𝐝𝐯𝐚𝐧𝐜𝐞𝐝 𝐑𝐚𝐝𝐚𝐫 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲: This smart motion sensor alarm system uses millimeter-wave radar for sActpe Motion Sensor Doorbell for Business Store Entry Alert Welcome Buzzer Monitor Alarm, Outdoor Door Chime Kit for Home - LE ✨【Easy, Fast, Wire Free Installation】 Infrared sensor detects motion and sends a signal to the receiver. Chose from 36 RHTZSAFE Driveway Alarm System- HTZSAFE 1/2Mile Solar Driveway Alarm System- Up to 70FT Wide Sensor Range- Fully Weatherproof Out SOLAR POWERED NO NEED REPLACE BATTERIES - The solar wireless driveway alarm system includes the solar powered driveway sKOQICALL KOQICALL Solar Alarm Moiton Detector 120 dB Adjustable Volume Strobe Light Audible Security Alarm IP65 Waterproof Outdoo 【Two Charging Methods】The mobile detector is powered by rechargeable lithium battery. The mobile detector can be chargedGAGALOR 5 Pcs Pack of Water Level Sensor Side Mounting PP Plastic Liquid Float Switch M16 Screw M16 Screw mounting with T silicone sealCryfokt Infrared Gate Beam Detector, Alarm Beam Sensor Adjustable Anti Theft Low Battery Reminder for Indoor Outdoor 【HIGH SENSITIVITY, WATERPROOF 】 Lens-type optical elements enhance the beam , have good to false alarms caused by rain,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.DCVFRQ Portable CO2 Detector, Indoor Rechargeable Air Quality Monitor, with Alarm Sound Can be Closed, NDIR Sensor 400-5000 PPM 【Fashionable design】Indoor Carbon Dioxide Concentration Detector uses a rechargeable battery, 3.7V polymer lithium batteMengshen Mengshen Wireless Bicycle Motorcycle Alarm, Waterproof Anti-Theft Security Sensor Alarm with 113dB Super Loud Sound, 7 L Mini Size: 3.7in * 1.6in, Compact with creative designEPTTECH 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.Tapo Tapo H500 HomeBase 16GB Built-in Memory Expandable up to 16TB Supports 16 Tapo Cameras & 64 Sensors Local Storage HDMI 5 Local storage without monthly fees: Built-in 16GB eMMC memory, expandable up to 16TB via an additional 2.5" SATA HDD/SSD